Page 1 SiBE811001EB Service Manual CONVENI-PACK LRYEQ16AY1(E) LCBKQ3AV1(E)
Page 2: Table Of Contents
3.2.1 Outdoor Unit ..................16 3.2.2 Booster Unit ..................17 3.3 Functional Parts Layout................18 3.3.1 LRYEQ16AY1 ..................18 3.3.2 LCBKQ3AV1 ..................19 3.4 Operation Limits ..................20 3.5 Wiring Diagram..................22 3.6 Piping Diagram..................24 3.7 Description and Layout of Functional Parts and Piping Diagram ...26 3.8 Option List ....................30...
Page 3 SiBE811001EB 5.6 Checks after Work Completion...............67 5.7 Additional Refrigerant Charge ..............67 5.8 Test Operation..................69 5.9 Check List....................71 6. Outline of Functions (Outdoor unit) ............76 6.1 Detailed Description of Functions (Outdoor Unit)........79 6.2 Outline of Functions (Booster Unit) ............100 6.2.1 Detailed Description of Functions (Booster Unit) ........ 102 7.
Page 4 SiBE811001EB 8.4.33 Low Pressure Switch Failure or Operate ..........212 8.4.34 Outdoor Unit Fan Motor Signal Abnormality ........213 8.4.35 Outdoor Air Thermistor Abnormality ........... 215 8.4.36 Intermediate/High Pressure Sensor Abnormality........ 216 8.4.37 Low Pressure Sensor Abnormality............218 8.4.38 Current Sensor Abnormality..............220 8.4.39 Outdoor Unit Thermistor Abnormality ..........
Page 5 SiBE811001EB 9. Basic Control..................318 9.1 Mounting of Feeler Bulb ...............318 9.1.1 Functions of Thermostatic Expansion Valve........318 9.1.2 Errors due to Faulty Connections ............319 9.1.3 Proper Method of Mounting Feeler Bulb ..........320 9.1.4 Methods of Fixing, Insulating, and Antisweat Covering of Feeler Bulb..........323 9.1.5 Type and Principle of Electronic Expansion Valve......
Page 6: Introduction
Introduction SiBE811001EB 1. Introduction Safety Precautions Before performing design, construction, or maintenance, thoroughly read the "Safety Precautions" and also the "Installation Manual" and "Operation Manual" that come with this product. Precautions are classified as " WARNING" or " CAUTION" for the purpose of this Section. Items that mishandling highly potentially induces serious consequences such as death or serious injury are specially described under "...
Page 7 SiBE811001EB Introduction CAUTION (6) Do not start or stop the air (10) To clean the equipment, be conditioner using the POWER sure to set the POWER SUPPLY switch. SUPPLY switch to "OFF" to turn OFF all power supplies. Doing so may result in a Not doing so may result in injury failure or water leakage.
Page 8 Introduction SiBE811001EB WARNING (16) Conduct electrical works (19) Do not cause damage to or according to information in process the power supply cord. the "Electrical Equipment Doing so will result in an Doing so will result in an Technical Standards", electric shock or a fire.
Page 9 SiBE811001EB Introduction <III. Precautions after Construction and Repair> WARNING (24) Check power supply terminals Not doing so will result in an for deposition of dust or for electric shock, heat generation, any loose terminals. or a fire. Deposition of dust on or (26) Do not connect the power imperfect connections of supply cord halfway or with...
Page 10 Introduction SiBE811001EB CONVENI-PACK Nomenclature Outdoor unit Anti-corrosion type Power supply symbol Y1: 3φ 380-415V, 50Hz Indicates major design category Capacity indication 16: 16HP Refrigerant Q: R-410A Compressor type E: Intermediate INJ type Y: Refrigeration / Heat Pump Product category L: Low temperature air conditioner R: Outdoor unit Booster unit Anti-corrosion type...
Page 11: System Configuration
2. System Configuration System Overview Remote controller DIII net Main contribution to abnormal stop / Outdoor unit Buzzer unit Back-up output (200V voltage existing) (LRYEQ16AY1) (field supply) Instruction for freezer Instruction for refrigeration Defrost control panel (field supply) Defrost signal Booster unit...
Page 12: Features Of Refrigerant System
System Configuration SiBE811001EB Features of Refrigerant System Feature-1: Energy saving operation by controlling [3 evaporating temperatures] and [3 liquid refrigerant temperatures]. Feature-2: Energy saving operation by heat recovery of refrigeration system during heating operation. Evaporating temperature 5˚C Liquid temperature 35˚C Indoor unit for air conditioning Evaporating temperature -10˚C...
Page 13: Economizer
SiBE811001EB System Configuration Economizer The economizer cycle has been adopted as the improvement plan of the performance coefficient of the screw chiller or centrifugal water chiller. In adopting the high pressure liquid refrigerant called R-410A, an economizer cycle is adopted to improve efficiency while lowering the discharge gas temperature. [Single Stage Refrigerating Cycle] [Economizer Cycle] This is adopted with temperature control in mind...
Page 14: Regarding R-410A Selection
System Configuration SiBE811001EB Regarding R-410A Selection Item R-410A R-404A R-22 R-22 R-404A R-410A Ozone Depletion Potentials (ODP) 0.05 Global Global Global Global Warming Potentials (GWP) 1975 3920 1810 Warming Warming Warming Theoretical COP Ratio (∗1) 100% Potentials Potentials Potentials 1810 3920 1975 Theoretical Cooling Capacity Ratio (per unit...
Page 15: Standard Specification
SiBE811001EB Standard Specification 3. Standard Specification Standard Specification 3.1.1 Outdoor Unit LRYEQ16AY1 Model [LRYEQ16AY1E] Power Supply 3 phase 50Hz 380-415V Cooling -5°C~43°CDB Outdoor operating temperature range Heating -15°C~15.5°CWB, -15°C~21°CDB Air conditioning 14.0 (In cooling priority mode) Cooling Refrigeration 21.8 (In cooling priority mode)
Page 16: Booster Unit
Standard Specification SiBE811001EB 3.1.2 Booster Unit LCBKQ3AV1 Model LCBKQ3AV1(E) Power Supply 1 phase 220-240V 50Hz Capacity 3.35 Range of Outdoor Temperature °C -15~+43 Casing Color Ivory white (5Y7.5/1) [Light camel (2.5Y6.5/1.5)] Dimensions: (H×W×D) 480×680×310 Type Hermetically sealed swing type Piston Displacement 10.16 Compressor Number of Revolutions...
Page 17: Set Values For Functional Components And Protection Devices
SiBE811001EB Standard Specification Set Values for Functional Components and Protection Devices 3.2.1 Outdoor Unit Component Electric symbol LRYEQ16AY1(E) Type JT1GKDKTNYR@SB (Scroll compressor) Inverter Overcurrent protection device 14.7A Type JT17GKKTNYE@SB (Scroll compressor) Compressor STD1 Overcurrent protection device Type JT17GKKTNYE@SB (Scroll compressor)
Page 18: Booster Unit
Standard Specification SiBE811001EB Component Electric symbol LRYEQ16AY1(E) Type ACB-1TB27W S1PH Set value AC250V OFF: 3.8 MPa ON: 2.85±0.15MPa -0.1 High Type ACB-1TB27W pressure S2PH Set value AC250V OFF: 3.8 MPa ON: 2.85±0.15MPa switch -0.1 Type ACB-1TB27W S3PH Set value AC250V OFF: 3.8 MPa ON: 2.85±0.15MPa...
Page 19: Functional Parts Layout
SiBE811001EB Standard Specification Functional Parts Layout 3.3.1 LRYEQ16AY1 Plan ELECTRONIC EXPANSION RECEIVER OIL SEPARATOR HEAT EXCHANGER VALVE (FOR OIL RETURN) THERMISTOR (SUCTION) SOLENOID VALVE PLATE HEAT EXCHANGER PRESSURE CONTROL VALVE PRESSURE SENSOR (MIDDLE PRESS.) THERMISTOR (DEICER) THERMISTOR (DISCHARGE) Front View...
Page 20: Lcbkq3Av1
Standard Specification SiBE811001EB 3.3.2 LCBKQ3AV1 Plan ELECTRONIC EXPANSION VALVE ELECTRONIC EXPANSION VALVE (FOR LIQUID INJECTION) (FOR SUB COOLING) STOP VALVE PRESSURE CONTROL VALVE (LIQUID INLET SIDE) COMPRESSOR (INV.) PRESSURE SENSOR STOP VALVE SERVICE PORT OIL SEPARATOR (LOW) (DISCHARGE GAS SIDE) HIGH PRESSURE SWITCH Front View EL.
Page 21: Operation Limits
SiBE811001EB Standard Specification Operation Limits LRYEQ16AY1(E) Air-conditioner (cooling) Air-conditioner (heating) Indoor temperature (˚CWB) Indoor temperature (˚CDB) Refrigeration Evaporating temperature (˚C) Note ∗1. Range for humidity (Air-conditioner (cooling)) ··· RH80% or below Range for humidity (Refrigeration) ··· RH95% or below ∗2. “Range for continuous operation” SHOWS POSSIBLE RANGE OF CONTINUOUS OPERATION.
Page 22 Standard Specification SiBE811001EB LCBKQ3AV1(E) Evaporating temperature (˚C) 4D067032 Note ∗1. “Range for continuous operation” SHOWS POSSIBLE RANGE OF CONTINUOUS OPERATION. ∗2. “Range for pull down operation” SHOWS POSSIBLE RANGE OF SHORT-TIME OPERATION. • DO NOT SELECT THE MODEL IN THE RANGE FOR PULL DOWN OPERATION. •...
Page 23: Wiring Diagram
SiBE811001EB Standard Specification Wiring Diagram LRYEQ16AY1(E) CONVENI-PACK...
Page 24 Standard Specification SiBE811001EB LCBKQ3AV1(E) CONVENI-PACK...
Page 25: Piping Diagram
SiBE811001EB Standard Specification Piping Diagram LRYEQ16AY1(E) CONVENI-PACK...
Page 26 Standard Specification SiBE811001EB LCBKQ3AV1(E) CONVENI-PACK...
Page 27: Description And Layout Of Functional Parts And Piping Diagram
SiBE811001EB Standard Specification Description and Layout of Functional Parts and Piping Diagram LRYEQ16AY1(E) Electric Name Function symbol An inverter-driven compressor, which runs at operating frequencies in the Inverter compressor (INV.) range of 52Hz to 210Hz. Used mainly for refrigeration. Standard compressor A compressor, which runs on a commercial power supply.
Page 28 Standard Specification SiBE811001EB Electric Name Function symbol (29) Gauge port — Used to connect the low pressure gauge on the refrigeration side. Stop valve (air conditioning (30) — For liquid (air conditioning side) side) (liquid) Stop valve (air conditioning (31) —...
Page 29 SiBE811001EB Standard Specification LRYEQ16AY1(E) CONVENI-PACK...
Page 30 Standard Specification SiBE811001EB LCBKQ3AV1 Electric Name Function symbol An inverter-driven compressor, which runs at operating frequencies in the Inverter compressor (INV.) range of 57Hz to 297Hz. Operates as low stage side (for refrigeration) of 2-stage compression. Refrigerant gas discharged from the compressor contains lubricating oil in the compressor.
Page 31: Option List
SiBE811001EB Standard Specification Option List Series Condensing unit for refrigeration system Remark Model LRYEQ16AY1 LRYEQ16AY1E Option name Digital pressure gauge kit BHGP26A1 BHGP26A1E ∗KPS26C504E Kit (Inlet + Outlet) KPS26C504 Note.1 ∗KPS26C504TE Air outlet KPS26C504T Note.1 ∗KPS26C504LE Left side air inlet KPS26C504L Note.1...
Page 32: Description Of Functions And Operation
Description of Functions and Operation SiBE811001EB 4. Description of Functions and Operation Operating Mode The fundamental mode of this system differs significantly between [Air conditioning (∗1) load] and [Refrigerating (∗2) load]. The compressor operation and status of outdoor unit heat exchanger for each mode are as follows: ∗1.
Page 33: Operation Zones And Operation Mode No
SiBE811001EB Description of Functions and Operation Operation Zones and Operation Mode No. "Operation Mode No." shown in figure below are imparted to operation zones, which are determined according to "air conditioning loads" and "refrigeration loads". These "Operation Mode No." are used in the description of operation modes on the following page and later, which should be put to use.
Page 34: Refrigerant Flow For Each Operation Mode
Description of Functions and Operation SiBE811001EB Refrigerant Flow for Each Operation Mode Explanatory note Oil separator Filter Thermistor Pressure sensor Sight glass Electronic expansion valve Solenoid valve Four way valve Pressure regulating valve Drier (Field supply) Capillary tube Check valve Service port Stop valve Cooling only...
Page 35 SiBE811001EB Description of Functions and Operation Cooling only Mode 6 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Cooling only Mode 7 Four way valve Heat Pump indoor unit INV.
Page 36 Description of Functions and Operation SiBE811001EB Cooling = Refrigeration + Freezer Mode 8 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Cooling = Refrigeration + Freezer Mode 11 Four way valve Heat Pump indoor unit...
Page 37 SiBE811001EB Description of Functions and Operation Cooling = Refrigeration + Freezer Mode 12 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Cooling > Refrigeration + Freezer Mode 17 Four way valve Heat Pump indoor unit...
Page 38 Description of Functions and Operation SiBE811001EB Cooling < Refrigeration + Freezer Mode 24 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Refrigeration + Freezer Mode 29 Four way valve Heat Pump indoor unit INV.
Page 39 SiBE811001EB Description of Functions and Operation Refrigeration + Freezer Mode 30 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Refrigeration + Freezer Mode 35 Four way valve Heat Pump indoor unit INV.
Page 40 Description of Functions and Operation SiBE811001EB Heating only Mode 40 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Heating only Mode 41 Four way valve Heat Pump indoor unit INV.
Page 41 SiBE811001EB Description of Functions and Operation Heating only Mode 42 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Heating = Refrigeration + Freezer Mode 43 Four way valve Heat Pump indoor unit INV.
Page 42 Description of Functions and Operation SiBE811001EB Heating = Refrigeration + Freezer Mode 46 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Heating = Refrigeration + Freezer Mode 47 Four way valve Heat Pump indoor unit...
Page 43 SiBE811001EB Description of Functions and Operation Heating > Refrigeration + Freezer Mode 52 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Heating < Refrigeration + Freezer Mode 59 Four way valve Heat Pump indoor unit...
Page 44 Description of Functions and Operation SiBE811001EB 100% Heat Recovery Mode 64 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C 100% Heat Recovery Mode 65 Four way valve Heat Pump indoor unit INV.
Page 45 SiBE811001EB Description of Functions and Operation 100% Heat Recovery Mode 70 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Heat Recovery Mode 74 Four way valve Heat Pump indoor unit INV.
Page 46 Description of Functions and Operation SiBE811001EB Heat Recovery Mode 75 Four way valve Heat Pump indoor unit INV. STD1 STD2 LPS1 Refrigeration 5˚C Refrigeration 5˚C Field supply INV. Freezer -30˚C Heat Recovery Mode 80 Four way valve Heat Pump indoor unit INV.
Page 47: Test Operation
SiBE811001EB Test Operation 5. Test Operation Preparations Prior to Test Operation Once installation work is complete, conduct the following preparations prior to the test operation. 5.1.1 Charging Additional Refrigeration Oil Charging with additional refrigeration oil is only required when 3 booster units are connected. (When there are only 1 or 2 booster units connected, additional charging is not required.) (1) Additional charging volumes No.
Page 48 Test Operation SiBE811001EB Verify that all power is shut down. Conduct evacuation from the service ports of stop valves of the outdoor unit. Evacuation should be conducted over approximately 1 hour, confirming the vacuum is sucking. (Under -0.1 MPa) Open a hole in the can of oil, then insert the piping to the bottom of the can. Quickly close any air gaps around the piping with the waste cloth ensuring the oil is not exposed to the air.
Page 49: Additional Refrigerant Charging
×0.12 ×0.059 ×0.022 liquid liquid liquid liquid pipe pipe pipe pipe "Outdoor unit portion" 3.5 kg - according to LRYEQ16AY1 "Connection unit portion" Refrigeration Blower coil Freezer showcase Each indoor unit showcase (C1) (C3) (C2) (C4) (Total) (Total) (Total) ∗ Adjust the total amount of refrigerant connected VRV indoor unit to 4.1 kg or less.
Page 50 Test Operation SiBE811001EB ∗1. Sensor kit is prohibited in principle (BRYQ140A7) Because there are several concern points like product loss, the sensor kit should be prohibition in principle. (e.g.) AC operation might be stopped automatically when no people are detected during continuously operation. In case of this, heating capacity of indoor unit cannot be used for heat recovery mode during winter season.
Page 51 SiBE811001EB Test Operation (2) Refrigerant charging procedure (1) Charge the refrigerant from the liquid refrigeration stop valve service port. (2) When the calculated refrigerant volume cannot be charged, continue to charge the refrigerant while running the unit as outlined in the steps below. While the operation switch remains OFF, power-ON the outdoor unit/indoor unit (air-conditioner/refrigeration showcase/refrigeration unit cooler) / defrost control board and fix the system.
Page 52: Test Operation
Test Operation SiBE811001EB Test Operation Once the "preparations prior to test operation" are complete, conduct the test operation following the procedure as outlined below, checking the relevant items. 5.2.1 Test Operation Procedure Fully open the stop • Fully open the gas and liquid stop valves of the outdoor unit and booster unit. valves •...
Page 53: Checking The Operating State
SiBE811001EB Test Operation 5.2.2 Checking the Operating State Conduct a check of the operating state by the following steps. Check there is cold air being released from the refrigeration/freezer showcase, and confirm the internal temperature is reducing. Turn the air-conditioner on using the remote controller. (Do not frequently cool/heat changeover) Check the thermostat turns OFF in the refrigerator/freezer/air-conditioner respectively.
Page 54: Checking The Operation Data
Test Operation SiBE811001EB 5.2.3 Checking the Operation Data ZEAS-AC Model name Serial No. System name / Installation place Outdoor unit Booster unit Indoor unit A Indoor unit B Check item Check method Criteria Actual measurement Judgement Individual Visual check No reverse phases Good / No good breaker–...
Page 55 SiBE811001EB Test Operation Check item Check method Criteria Actual measurement Judgement Compressor Measure with a 500V megger 1 MΩ or more Inverter MΩ tester. compressor (Measure at U, V, and W phases Standard MΩ and then record a minimum value.) compressor Standard MΩ...
Page 56 Test Operation SiBE811001EB Check item Check method Criteria Actual measurement Judgement High pressure Cooling : Outdoor air temperature (discharge 25°C~35°C 2.6~3.2MPa Outdoor unit pressure) Heating : Indoor suction air temperature 25°C~30°C After a lapse of 20 minutes or more since the compressor starts up, measure this pressure in stable Equal to low pressure Booster unit...
Page 57: Refrigerant Piping
SiBE811001EB Test Operation Refrigerant Piping [REFRIGERANT] This System use R-410A refrigerant. Caution This unit is already filled with a certain amount of R-410A. Never open liquid and gas stop valve until the step Specified in “CHECKS AFTER WORK COMPLETION”. The refrigerant R-410A requires strict cautions for keeping the system clean, dry and tight. Read the chapter “REFRIGERANT PIPING”...
Page 58: To Piping Work Contractors
Test Operation SiBE811001EB 5.3.1 To Piping Work Contractors Never open the stop valve until the steps specified in “FIELD WIRING” and “Checking of Device and Installation Conditions” of piping. Do not use flux at the time of brazing and connecting refrigerant pipes. Use phosphorous copper brazing filler metal (BCuP-2), which does not require flux.
Page 59: Selection Of Piping Material
SiBE811001EB Test Operation 5.3.2 Selection of Piping Material Make sure that the inner side and outer side of the piping used is clean and free of contaminants, such as sulphur, oxide, dust, chips, oil and fat, and water. It is desirable that the maximum oil adhesion in the piping is 30 mg per 10 m. Use the following type of refrigerant piping.
Page 60: Drier Installation
Required dryer core Model (recommended type) 160g (100% molecular sieve equivalent) LRYEQ16AY1 (DML164/DML164S : Danfoss made) Connect the drier to liquid pipe on the refrigeration side. Install the drier in a horizontal orientation wherever possible. Install the drier as close to the outdoor unit as possible.
Page 61 SiBE811001EB Test Operation Tightening torque N•m (closes clockwise) Stop valve sizes Shaft (valve body) Valve cover Service port Hexagon wrench: φ9.5 5.4~6.5 13.5~16.5 11.5~13.9 Hexagon wrench: φ25.4 27.0~33.0 22.5~27.5 〈Opening method〉 1. Remove the valve cover and turn the shaft anticlockwise with a hexagon wrench. 2.
Page 62: Precautions For Piping
Test Operation SiBE811001EB 5.3.5 Precautions for Piping Perform piping branching with the following conditions kept in mind. Liquid piping At the time of branching the liquid piping, use a T-joint or Y-joint and branch it horizontally. This will prevent an uneven flow of refrigerant. Use a Y-joint for the liquid refrigerant branch and have the piping branch horizontally.
Page 63: Field Wiring
Recommended Model Voltage frequency amp. fuses φ3, 50Hz LRYEQ16AY1 380-415V 35.2A Point for attention regarding quality of the public electric power supply This equipment complies with respectively: EN/IEC61000-3-11 provided that the system impedance Z is less than or equal to Z...
Page 64 Test Operation SiBE811001EB (1) European/International Technical Standard setting the limits for voltage changes. Voltage flucruations and flicker in public low-voltage supply systems for equipment with rated current ≤ 75A (2) European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current >...
Page 65: Inspection And Pipe Insulation
SiBE811001EB Test Operation Inspection and Pipe Insulation For piping work contractor, electrical work contractor, and trial run workers Never open the stop valve until the insulation measurement of the main power supply circuit is finished. The measured insulation value will become lower if the measurement is made with the stop valve opened.
Page 66: Thermal Insulation Work
Test Operation SiBE811001EB Stop valve Gas side service port stop valve Liquid side Pressure-reducing valve stop valve Charge hose Valve Outdoor unit R-410A To Refrigeration indoor unit To Air conditioning Vacuum pump indoor unit Meter Used for refrigerant replenishment Note: Field pipings Connection procedure for gauge manifold and vacuum pump...
Page 67: Checking Of Device And Installation Conditions
SiBE811001EB Test Operation Liquid side stop valve Coking, etc. Gas side stop valve Indoor/Outdoor Insulation material interunit piping Piping lead-out hole lid Block Liquid side piping Open a knock hole at Gas side piping Note: After knocking out the holes, we recommend you remove burrs in the knock holes and paint the edges and areas around the edges using the repair paint.
Page 68: Checks After Work Completion
Test Operation SiBE811001EB Checks after Work Completion Make sure the following works are complete in accordance with the installation manual. • Piping work • Wiring work • Air tight test/Vacuum drying • Installation work for indoor unit • Installation work for booster unit (In case of the booster unit connection) Additional Refrigerant Charge For refrigerant filling contractor...
Page 69 SiBE811001EB Test Operation Caution Refer to the Operation Method of Stop Valves for the control method of the stop valves. Never replenish liquid refrigerant directly from a gas line. Liquid compression may cause the compressor to fail. Refer to the Service Manual for instructions on additional refrigerant charging when indoor units are connected only to the air conditioning equipment side or only to the refrigeration equipment side.
Page 70: Test Operation
Test Operation SiBE811001EB 2. After the refrigerant replenishment is completed, fill out the item “total amount of refrigerant replenishment” on the label of instructions on refrigerant replenishment of the outdoor unit with the actual amount of refrigerant replenishment. Refer to the illustration of the label pasting position for instructions on refrigerant replenishment (see the illustration on the above).
Page 71 SiBE811001EB Test Operation 5. Check the sealing condition through the sight glass of the outdoor unit. In case of shortage of refrigerant, check if the refrigerant is charged to the specified level. 6. Check the following on each unit. Cold air should be blowing and the temperature should decrease to the preset level.
Page 72: Check List
Test Operation SiBE811001EB Check List Check item Check method Criteria Actual measurement Judgement Measure this temperature using a Refrigeration: -15 to Outdoor air thermometer. 43°C temperature (Measure it in places that are no – Cooling: -5 to 43°C influence of discharge air from Heating: -15 to 21°C outdoor unit.) °C...
Page 73 SiBE811001EB Test Operation Model name / Common name Check item Set/Standard value Actual measurement Judgement Remarks Manufacturer: Temperature setting °C °C Audible alarm over abnormally high temperature °C °C Type: Audible alarm over abnormally low temperature °C °C Serial No.: Discharge air temperature °C °C...
Page 74 Test Operation SiBE811001EB Model name / Common name Check item Set/Standard value Actual measurement Judgement Remarks Manufacturer: Temperature setting °C °C Audible alarm over abnormally high temperature °C °C Type: Audible alarm over abnormally low temperature °C °C Serial No.: Discharge air temperature °C °C...
Page 75 SiBE811001EB Test Operation Model name Serial No. System name / Installation place Outdoor unit Booster unit Indoor unit A Indoor unit B Check item Check method Criteria Actual measurement Judgement Individual Visual check No reverse phases Good / No good breaker–...
Page 76 Test Operation SiBE811001EB Check item Check method Criteria Actual measurement Judgement Overcurrent To be within the Outdoor unit Current leakage mA specified capacity. Inverter compatible Power supply To be equipped with Visual check breaker earth leakage circuit Overcurrent breaker and inverter- Booster unit Current leakage mA compatible.
Page 77: Outline Of Functions (Outdoor Unit)
SiBE811001EB Outline of Functions (Outdoor unit) 6. Outline of Functions (Outdoor unit) (1) Outdoor unit (Input) (Output) Outdoor unit (Function) Startup control for air- Low pressure sensor for Compressor conditioning refrigeration Startup control for Electronic expansion Low pressure sensor for refrigeration valve air conditioning...
Page 78 Outline of Functions (Outdoor unit) SiBE811001EB Outdoor Unit Symbol of General Use Name Electric Symbol Symbol on RAM monitor for Control INV. Compressor INV. STD Compressor 1 STD1 52C1 [X5A] STD Compressor 2 STD2 52C2 [X5B] Fan Motor M1F, M2F Fan1, Fan2 Fan1, Fan2 Four Way Valve (Main)
Page 79 SiBE811001EB Outline of Functions (Outdoor unit) (2) Step control of outdoor unit <Compressor step table (for refrigeration)> INV. compressor frequency INV. (No. of revolution) step (Hz) (rps) 82.5 <Outdoor unit fan step table> Fan tap Revolution of outdoor unit fan 1050 1091 1186...
Page 80: Detailed Description Of Functions (Outdoor Unit)
Outline of Functions (Outdoor unit) SiBE811001EB Detailed Description of Functions (Outdoor Unit) (1) Startup control for air conditioning • Operation SW: ON • Remote controller: ON • Main DIP • SW2-3 (Rest air-conditioner after forced stop): OFF • No cleaning request from indoor unit &...
Page 81 SiBE811001EB Outline of Functions (Outdoor unit) Case of activating cleaning forcibly Cooling: All indoor units make their thermostats OFF. Heating: Forcible shifts to operation mode = 0, 74, 75 and 80 when cleaning request comes from indoor unit and outdoor unit has approved cleaning. (1)-4 Outdoor evaporating mode prohibited •...
Page 82 Outline of Functions (Outdoor unit) SiBE811001EB Tsd (Lpm1) Tsd (Lpm1) 0°C -10°C (0.69MPa) (0.47MPa) (Factory setting) 5°C (0.82MPa) -20°C (0.29MPa) 10°C -15°C (0.98MPa) (0.37MPa) Lpm1: Pressure equivalent evaporative pressure set with DIP switch (Evaporative temperature set with DIP switch: Tsd) LP1: Pressure detected by low pressure sensor [S1NPL1] -5°C (0.56MPa)
Page 83 SiBE811001EB Outline of Functions (Outdoor unit) (2)-2 Operation clearance ON/OFF to Booster unit Operation clearance is transmitted to booster unit to use booster unit thermostat being ON/OFF. • Operation SW: ON • Operation mode: 0, 5, 6, 7, 40, 41, 42 •...
Page 84 Outline of Functions (Outdoor unit) SiBE811001EB (3)-3 Redundant refrigerant recovery-3: Avoids running out of gas due to accumulation of refrigerant in the indoor heat exchanger during partial Heat Recovery operation. Emergency correspondence is capable of the above steps with service mode 2 - 20 setting to be set 1 - 3. (Factory setting) Detects accumulation of liquid in the indoor unit, opens EV of indoor unit as well as closing Y1E of outdoor unit, then returns liquid refrigerant to receiver.
Page 85 SiBE811001EB Outline of Functions (Outdoor unit) <2-20: Set 3> Forcibly conducts refrigerant recovery with four way valve-B when 30 minutes of partial Heat Recovery operation have been accumulated. • Opening degree of EV of all indoor units > 0 pls &...
Page 86 Outline of Functions (Outdoor unit) SiBE811001EB (4) Capacity control Capacity Capacity control for freezing control • Increases/decreases compressor frequency with low pressure made into control volume to obtain optimum cooling capacity for the target evaporating temperature (Tst). The target evaporating temperature, Tst becomes the value set by DIP switch, button-switch, etc.
Page 87 SiBE811001EB Outline of Functions (Outdoor unit) Heating capacity control for air conditioning • Reduces the number of compressor units on the air conditioning with outdoor evaporator mode at heating. Increases the number of Maintains the number of Reduces the number of compressor units in compressor units for the compressor units at...
Page 88 Outline of Functions (Outdoor unit) SiBE811001EB (5) High pressure control High pressure control Drooping at sudden increasing of high pressure • HP > A MPa During normal During high pressure STD compressor stops operation increasing is drooping 1 When the above condition is released. •...
Page 89 SiBE811001EB Outline of Functions (Outdoor unit) Outdoor unit fan DOWN • HP – LP1 < 0.294MPa (Operation for refrigeration) • HP – LP2 < 0.294MPa (Operation for air conditioning) • Operation mode ≠ 5, 6, 7 Reduce fan tap with 1 tap •...
Page 90 Outline of Functions (Outdoor unit) SiBE811001EB Target Tc • Target Tc = Min (Target Tc1, Target Tc2) • Target Tc1: Determined by setting temperature of remote controller Target Tc1 = Max (Tset) + 20˚C + Tc1 correction (Changeable by service mode, 2 - 29) Target Tc2: Outdoor air temperature and Tc2 correction (Changeable by service mode, 2 - 32) Tc2 correction Tc1 correction...
Page 91 SiBE811001EB Outline of Functions (Outdoor unit) (6) Discharge gas temperature control Discharge gas temperature control • Td (Discharge gas temperature) includes Drooping control of Td1(INV.), Td2(STD1) and Td3(STD2) compressor discharge gas • Predicted Tp (Discharge port temperature) includes Tp_1(INV.), Tp_2(STD1) and Tp_3(STD2) •...
Page 92 Outline of Functions (Outdoor unit) SiBE811001EB (7) Outdoor subcooling control Outdoor subcooling control Set 2-13 Target SC 5˚C Indoor liquid refrigerant discharge control (Factory setting) 8˚C Set 1 Refer to the redundant refrigerant recovery 3 10˚C Set 2 Y1E: 0pls SV1: OFF Normal outdoor condenser control •...
Page 93 SiBE811001EB Outline of Functions (Outdoor unit) 3. Apply control to reduce the intermediate INJ volume for the purpose of operation with 3 units as far as possible, even at the overheat situation. Control EV 3 - 5 so that the target Td becomes 95°C with HP > 2.744 MPa as well as the refrigeration + air conditioning operation.
Page 94 Outline of Functions (Outdoor unit) SiBE811001EB (10) Indoor unit fan control (Only forced instructions from outdoor unit provided.) During redundant refrigerant recovery 3 control. ··· All indoor units are instructed to set fan to “H”. (All units with remote controller OFF, thermostat OFF, or thermostat ON.) During defrosting.
Page 95 SiBE811001EB Outline of Functions (Outdoor unit) (11) Indoor EV control (Only forced instructions from outdoor unit provided.) Indoor EV control Instructions to shut down completely when only refrigeration is operating • Operation mode: 0, 29, 30, 35– – – Indoor EV = 0pls instruction Indoor SH control SH2: Suction SH for air conditioning •...
Page 96 Outline of Functions (Outdoor unit) SiBE811001EB (12) Receiver liquid pressure control When four way valve switching is not used during control of redundant refrigerant recovery 3 or Operation mode: 74, 75, 80 continues for 5 minutes ··· SV0: ON Operation mode: 74, 75, 80 & Td < 60°C Min(Td, Tp) - f(HP) < 10°C ··· SV0: OFF (13) Overheat protection control If any of the following conditions is met, the system will cease operation.
Page 97 SiBE811001EB Outline of Functions (Outdoor unit) (17) Earth leakage detection control 1. Detection using a earth leakage detection board If the high pressure sensor reading below 3.371MPa, the earth leakage detector PCB will be activated. Then the compressor operation will stop and declare a problem (abnormal stop).To reset, turn OFF the power switch (or operation switch) and restart it again.
Page 98 Outline of Functions (Outdoor unit) SiBE811001EB (21) Mode transition The below flow chart shows a summary of mode transitions. Cooling (except backup mode) • Operation SW: ON • Remote controller: Cool/ ventilation Mode 0 (Stop) • Air conditioning: OFF • Operation SW: ON •...
Page 99 SiBE811001EB Outline of Functions (Outdoor unit) Heating (except backup mode) • Operation SW: ON Mode 0 (STOP) • Remote controller: OFF • Operation SW: ON • Air conditioning: OFF & • Remote controller: Cool • Operation SW: OFF • Protection device •...
Page 100 Outline of Functions (Outdoor unit) SiBE811001EB Defrost IN transition Mode 40 (STD1, 2: air conditioning) Mode 41 Mode 6 (STD2: (STD2: air conditioning) air conditioning) • Refer to the successive condition on P.91. Mode 42 Mode 7 (STD1: (STD1: air conditioning) air conditioning) Mode 43 Mode 75 (priority)
Page 101: Outline Of Functions (Booster Unit)
SiBE811001EB Outline of Functions (Outdoor unit) Outline of Functions (Booster Unit) (1) Booster Unit (Input) (Output) Outdoor unit (Function) Startup control Compressor Low pressure sensor Electronic expansion Capacity control Discharge pipe thermistor valve Oil recovery control INV. cooling fan Heat exchanger outlet thermistor Solenoid valve for Fan control...
Page 102 Outline of Functions (Outdoor unit) SiBE811001EB (2) Step control of booster unit <Compressor Step Table> DC compressor frequency (No. of revolution) Step (Hz) (rps) 97.5 32.5 109.5 36.5 124.5 41.5 139.5 46.5 265.5 88.5 CONVENI-PACK...
Page 103: Detailed Description Of Functions (Booster Unit)
SiBE811001EB Outline of Functions (Outdoor unit) 6.2.1 Detailed Description of Functions (Booster Unit) (1)-1 Startup control Order of actuator operation when thermostat is ON The refrigeration SV is activated when an operation permission signal is received from the outdoor unit. Immediately after startup, when BU_LP <...
Page 104 Outline of Functions (Outdoor unit) SiBE811001EB (2) Capacity control Tst_BU: Target evaporative temperature Tsd_BU: Evaporative temperature set by DIP switch Tsp1_BU: Temperature correction setting 1 by the BS button Tsp2_BU: Temperature correction setting 2 by the BS button Tst_BU = Tsd_BU + Tsp1_BU + Tsp2_BU Refer to the “Field setting”...
Page 105 SiBE811001EB Outline of Functions (Outdoor unit) Capacity control Control by predicted HP • When compressor is stopped • When communication with outdoor unit is normal & • BU_MP < 1.568MPa continues for 3 consecutive min. • When there is a communication error with outdoor unit &...
Page 106 Outline of Functions (Outdoor unit) SiBE811001EB (3) Oil recovery control Oil recovery performed only when set in service mode 2-19 (Toil_BU). • BU_LP > 0.0588MPa • Continuous operation & R2 signal stays on. time for operation mode 1 (that for Toil_BU) or more R2 signal: OFF •...
Page 107 SiBE811001EB Outline of Functions (Outdoor unit) (7) High pressure protection control Pressure switch (operation pressure: 2.5 MPa) is activated causing abnormal stop of compressor To reset, turn OFF the power switch (or operation switch) and turn it restart again. Error code “ ”...
Page 108: Field Setting
Field Setting SiBE811001EB 7. Field Setting Outdoor Unit (1) Setting by switches This unit has settings that can be made using the DIP switch and the BS button. The power must be turned OFF when setting the DIP switch, but must be turned ON when using the BS button. (Note there are 2 DIP switches, one is on the outdoor unit main PCB (inside right of the C/BOX) and the other is on the sub PCB (inside left of the C/BOX).
Page 109 SiBE811001EB Field Setting (5) Setting method of the target evaporating temperature The target evaporating temperature is calculated as follows: Tst: Target evaporating temperature Tsd: Evaporating temperature set by the DIP switch Tsp1: Temperature correction setting 1 set by the BS button Tsp2: Temperature correction setting 2 set by the BS button Tsn: Temperature correction setting during night-time operation f(Ta):...
Page 110 Field Setting SiBE811001EB (7) Setting items by DIP switch on the sub PCB DIP switch settings on the Indoor unit fan operation inhibit setting during refrigerant recovery sub PCB • When service mode 2-20 is set to use set 2 or set 3, this unit will recover the refrigerant inside the air- conditioner indoor unit at regular intervals in order to, for example, cool a showcase even when the heating cycle is OFF such as during the night.
Page 111 Setting method Display of setting items Display of setting conditions Setting items H1P H2P H3P H4P H5P H6P H7P LRYEQ16AY1(E) Changing INV. compressor load-up Set 0 (Factory setting) Number of steps + 3 rate 3-41 Set 1...
Page 112 Field Setting SiBE811001EB Image of change in Hz in AC17 ver.139 and later Low pressure Range which can change the amount changed in the current step Range which accelerates AC17: Field setting 3-41 with the step amount set in the setting mode •...
Page 113 SiBE811001EB Field Setting (11) <Setting method of the outdoor unit fan control at snow> When the operation mode is "0, 64, 65, 70", the outdoor unit fan can regularly be driven. Display of setting items Display of setting conditions Setting item H1P H2P H3P H4P H5P H6P H7P Set 0: (Factory setting) 3-42 Setting method of the outdoor unit...
Page 114 Field Setting SiBE811001EB (12) Output Method of Caution Output During Communication Box Connection Setting an address of the outdoor unit is required to connect to the communication box (BRR9A1V1). When an address of the outdoor unit is set, the Caution output does not work. (Warning output can be output even during communication box connection) The following setting is required to output Caution output during communication box connection.
Page 115 SiBE811001EB Field Setting (14) Heating reinforced relation < Heating reinforced relation (At start)> Strengthening when heating starts (H/P start is given priority under the following condition). • Passage of 2 minutes • It is the batch heating strengthening set (sub-DIP SW2-2=ON) and exists The passage of the & 10 seconds. •...
Page 116 Field Setting SiBE811001EB < Heating reinforced relation (Partial H/R mode) > Heating capacity UP condition • HP < f(f (Target Tc)–0.294MPa • Ta < 25˚C • Min(Tr) < 25˚C + Setting mode: (2 - 42) & • Min(Tset-Tr) > 3˚C(1˚C is subtracted every 5 minutes.) •...
Page 117 SiBE811001EB Field Setting (15) Setting mode list (outdoor unit) 1. Setting modes (Page 2) Display of setting items Display of setting conditions Setting item H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P 0°C (Factory setting) -1°C (-0.0196MPa) -2°C (-0.0192MPa) Tsp1: Fine-tuning setting of...
Page 118 Field Setting SiBE811001EB Display of setting items Display of setting conditions Setting item H1P H2P H3P H4P H5P H6P H7P Setting for outdoor evaporating mode prohibit Purpose) This setting saves energy by disabling outdoor evaporating mode when heating H1P H2P H3P H4P H5P H6P H7P is set to a low temperature.
Page 119 SiBE811001EB Field Setting 2. Setting modes (Page 2 (service use)) Display of setting items Display of setting conditions Setting item H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P INV. compressor step = 20 INV. Compressor max. frequency (Factory setting) step control INV.
Page 120 Field Setting SiBE811001EB Display of setting items Display of setting conditions Setting item H1P H2P H3P H4P H5P H6P H7P Correction H1P H2P H3P H4P H5P H6P H7P temperature Set 0 0°C Absorption temperature degree (factory setting) correction at heating capacity UP of Set 1 -2°C partial heat recovery...
Page 121 SiBE811001EB Field Setting 3. Setting method when using AIRNET or the Type III Checker 1. If any of the following are used: indoor unit, booster unit, or Qup unit 1) When using AIRNET Set the AIRNET address in setting mode 2-6 To use the AIRNET format in the R-407C Conveni-Pack •...
Page 122 Field Setting SiBE811001EB Setting modes (Page 3 (service use)) Display of setting items Display of setting conditions Setting item H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Mask setting for detecting error Detecting error for LP1 drop permit for LP1 drop on refrigeration (factory setting) equipment...
Page 123 SiBE811001EB Field Setting Display of setting items Display of setting conditions Setting item H1P H2P H3P H4P H5P H6P H7P Heating capacity _ high pressure correction Heating capacity_ high H1P H2P H3P H4P H5P H6P H7P pressure correction Set 0 Purpose) 0MPa (factory setting)
Page 124 Field Setting SiBE811001EB Display of setting items Display of setting conditions Setting item H1P H2P H3P H4P H5P H6P H7P Heating capacity _ suction air temperature correction 4 H1P H2P H3P H4P H5P H6P H7P Set 0 4°C (factory setting) Set 1 5°C Heating capacity _ suction air...
Page 125 SiBE811001EB Field Setting [2-0] Fine tuning the evaporating temperature (setting of Tsp) This setting fine tunes the target evaporating temperature in increments of 1°C. Detailed setting procedures (1) Page 0 (Normal operating condition) Press and hold BS1 (MODE) for 5 seconds. (2) Changes to Page 2 Press BS3 (RETURN) once.
Page 126 Field Setting SiBE811001EB 3. Outdoor fan relation [2-5] Low noise setting by the outdoor air temperature The outdoor fan revolution can be changed according to the outdoor temperature. <Operation mode: 5-35, 64, 65, 70, 74, 75, 80> Fan tap 11 Tap 8, 9 or 10 Tap 7, 8 or 9 Tap Tamb: ambient temp.
Page 127 SiBE811001EB Field Setting <Operation mode: 40-59> Fan tap 9 ~ 11 Tap 8 ~ 11 Tap 8 ~ 11 Tap Tamb: ambient temp. ˚C Tax1 Tay1 Tax2 Tay2 The number of compressor (H/P side) Ambient temperature Fan tap Ambient temp. ≤ Tax1 Factory Tay1<...
Page 128 Field Setting SiBE811001EB [2-7] Low night noise setting by time Set this to low noise operating during night-time by time. Change the [Low night noise operation start setting] and [Low night noise operation end setting] as necessary. (The controller recognizes the time using AIRNET.) If both the [Low noise setting by outdoor air temperature (page 2-5)] and [Low night noise operation setting by time (Page 2-7)] are used at the same time, the fan will run on the setting that has a lower number of fan taps.
Page 129 SiBE811001EB Field Setting [2-8] Low night noise operation start time setting from AIRNET Detailed setting procedures (1) Page 0 (Normal operating condition) Press and hold B1 (MODE) for 5 seconds. (2) Changes to Page 2 Press BS2 (SET) 8 times. (3) Changes to Page 2-8 Press BS3 (RETURN) once.
Page 130 Field Setting SiBE811001EB [2-9] Low night noise operation end setting from AIRNET Detailed setting procedures (1) Page 0 (Normal operating condition) Press and hold BS1 (MODE) for 5 seconds. (2) Changes to Page 2 Press BS2 (SET) 9 times. (3) Changes to Page 2-9 Press BS3 (RETURN) once.
Page 131 SiBE811001EB Field Setting [2-11] Evaporating temperature correction setting during low night noise operation Set this to correct the evaporating temperature setting for low night noise operation by time. Change the [Low night noise operation start setting] and [Low night noise operation end setting] as necessary. (The controller recognizes the time using AIRNET.) Detailed setting procedures (1) Page 0...
Page 132 Field Setting SiBE811001EB (14) Evaporating temperature correction at night-time, using an external contact The 2 methods can be used to increase the evaporating temperature at night-time: 1. Receiving the time setting from the AIRNET (Setting Mode 2-11). 2. Using an external contact. The following describes the wiring needed to use an external contact.
Page 133 SiBE811001EB Field Setting (15) Low night noise mode using an external contact The outdoor unit fan revolution can be lowered at night-time or other times for low noise operation using one of 2 methods. 1. Receiving the time setting from the AIRNET (Setting Mode 2-11) 2.
Page 134: Remote Input
Field Setting SiBE811001EB Remote Input Remote input setting procedure Outdoor unit Input for ON/OFF of the outdoor unit is performed remotely using the onsite switch. Wiring onsite from the terminal strip X3M (1 and 2). Operation: Normal cooling operation. (Stops at the low pressure cut value.) Stop (OFF): Forced thermo.
Page 135: Field Setting With The Booster Unit
SiBE811001EB Field Setting Field Setting with the Booster Unit (1) Setting by the switches This unit has settings that can be made using the DIP switch and the BS button. The power must be turned OFF when setting the DIP switch, but must be turned ON when using the BS button. (2) Setting items by DIP switch on the outdoor unit main PCB Target evaporating DIP switch setting...
Page 136 Field Setting SiBE811001EB (5) Setting method of the target evaporating temperature The target evaporating temperature is calculated as follows: Tst_BU : Target evaporating temperature Tsd_BU : Evaporating temperature set by the DIP switch Tsp1_BU: Temperature correction setting 1 set by the BS button Tsp2_BU: Temperature correction setting 2 set by the BS button Tst_BU = Tsd_BU + Tsp1_BU +...
Page 137 SiBE811001EB Field Setting (6) Setting mode list (booster unit) 1. Setting modes (Page 2) Display of setting items Display of setting conditions Setting item H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P 0°C (Factory setting) -1°C (-0.0196MPa) -2°C (-0.0192MPa) -3°C (-0.0588MPa)
Page 138: Troubleshooting
Troubleshooting SiBE811001EB 8. Troubleshooting Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure The system does not start operation at all. Blowout of fuse(s) Turn OFF the power supply and then replace the fuse(s). Cutout of breaker(s) • If the knob of any breaker is in its OFF position, turn ON the power supply.
Page 139 SiBE811001EB Troubleshooting Symptom Supposed Cause Countermeasure COOL-HEAT The remote controller displays This remote controller has no Use a remote controller with selection is "UNDER CENTRALIZED option to select cooling operation. option to select cooling operation. disabled. CONTROL". The remote controller displays COOL-HEAT selection is made Use the COOL-HEAT selection "UNDER CENTRALIZED...
Page 140 Troubleshooting SiBE811001EB Symptom Supposed Cause Countermeasure 11 The system <Indoor unit> These are operating sounds of Normal operation. produces Immediately after turning ON the electronic expansion valve of This sound becomes low after a sounds. the power supply, indoor unit the indoor unit.
Page 141: Troubleshooting By Remote Controller
SiBE811001EB Troubleshooting Troubleshooting by Remote Controller 8.2.1 Mode Access Operation On power-up, the message "Connection under check. Please wait for a moment" will be displayed on the remote controller screen. Then that message will disappear and the basic screen will be displayed. To access a mode from the basic screen, refer to the figure below. When any of the operation buttons is pressed, the backlight will come on and remains lit for about 30 seconds.
Page 142 Troubleshooting SiBE811001EB CONVENI-PACK...
Page 143 SiBE811001EB Troubleshooting List of Error Codes (LRYEQ16AY1) Code Output during backup Sub-classification code (Remote Detection Abnormal Times when using Item Detection conditions Times of retry Retry action R1 signal (Only when AIRNET (only for BRC1E1/2/3 Processing after error is confirmed...
Page 144 Troubleshooting SiBE811001EB List of Error Codes (LRYEQ16AY1) Code Output during backup Sub-classification code (Remote Detection Abnormal Times when using Item Detection conditions Times of retry Retry action R1 signal (Only when AIRNET (only for BRC1E1/2/3 Processing after error is confirmed...
Page 145 SiBE811001EB Troubleshooting List of Error Codes (LRYEQ16AY1) Code Output during backup Sub-classification code (Remote Detection Abnormal Times when using Item Detection conditions Times of retry Retry action R1 signal (Only when AIRNET (only for BRC1E1/2/3 Processing after error is confirmed...
Page 146 Troubleshooting SiBE811001EB List of Error Codes (LRYEQ16AY1) Code Output during backup Sub-classification code (Remote Detection Abnormal Times when using Item Detection conditions Times of retry Retry action R1 signal (Only when AIRNET (only for BRC1E1/2/3 Processing after error is confirmed...
Page 147 SiBE811001EB Troubleshooting List of Error Codes (LRYEQ16AY1) Code Output during backup Sub-classification code (Remote Detection Abnormal Times when using Item Detection conditions Times of retry Retry action R1 signal (Only when AIRNET (only for BRC1E1/2/3 Processing after error is confirmed...
Page 148 Troubleshooting SiBE811001EB List of Error Codes (LCBKQ3AV1) Code Display on (Remote Detection Processing after error is Abnormal Output during backup Times when using Item Detection conditions Times of retry Retry action R2 signal Sub-classification code remote Reset procedure controller device confirmed stop output (Only when AIRNET address is 0)
Page 149 SiBE811001EB Troubleshooting List of Error Codes (LCBKQ3AV1) Code Display on (Remote Detection Processing after error is Abnormal Output during backup Times when using Item Detection conditions Times of retry Retry action R2 signal Sub-classification code remote Reset procedure controller device confirmed stop output (Only when AIRNET address is 0)
Page 150 Troubleshooting SiBE811001EB CONVENI-PACK...
Page 151: Self-Diagnosis By Wired Remote Controller
SiBE811001EB Troubleshooting 8.2.2 Self-diagnosis by Wired Remote Controller Explanation The following will be displayed on the screen when an error (or a warning) occurs during operation. Check the error code and take the corrective action specified for the particular model. Screen Operation lamp (1) Checking an error or warning...
Page 152: Remote Controller Service Mode
Troubleshooting SiBE811001EB 8.2.3 Remote Controller Service Mode Operating the CHECK/TEST button on the remote controller will make it possible to obtain "service data" and change "service setting" while in service mode. How to Enter the Service Mode Basic screen Field setting mode Service mode Press and hold Cancel button for 4 seconds or more.
Page 153 SiBE811001EB Troubleshooting Service Menu Item 2 Remarks 3. Indoor Status Display 1. Unit No. Select the Unit No. you want to check. 2. FAN Tap, speed (rpm) 3. FLAP Swing, fixed 4. Speed Fan speed (rpm) 5. EV Degree that electronic expansion valve is open (pls) 6.
Page 154: Test Operation Mode
Troubleshooting SiBE811001EB 8.2.4 Test Operation Mode The following procedure allows you to start a test operation. "Test operation" will be displayed at the bottom of the screen when the test operation function is ON. Test operation starts when the On/Off button is pressed within 10 seconds after the test operation is turned ON.
Page 155: Remote Controller Self-Diagnosis Function
SiBE811001EB Troubleshooting 8.2.5 Remote Controller Self-Diagnosis Function The following will be displayed on the screen when an error (or a warning) occurs during operation. Check the error code and take the corrective action specified for the particular model. Screen Operation lamp (1) Checking an error or warning Operation Status Display...
Page 156: Setting With The Bs Button
Troubleshooting SiBE811001EB Setting with the BS Button 8.3.1 Outdoor Unit Using the BS buttons on the outdoor unit main PCB (A1P) enable a various settings below: MODE RETURN TEST RESET The following 3 modes are available: • Setting mode 1 ..Initial state (while in normal operation). This mode indicates the current operation state (normal, abnormal, preparing).
Page 157 SiBE811001EB Troubleshooting (1) Monitor mode LED Display Data Setting Item Display H1P H2P H3P H4P H5P H6P H7P See next l h h h h h h Press the MODE (BS1) button in "Setting Abnormality (latest) page mode 1" and set to "Monitor mode." k h h h h h k System Data...
Page 158 Troubleshooting SiBE811001EB Check the contents of abnormalities and retries Contents of retires and abnormalities are checked as follows. Press the BS1 (MODE) button in <Display Confirmation 2> "Setting mode 1" switches to "Monitor mode." Press the BS2 (SET) button to indicate confirmation 2 on the lamp display.
Page 159 SiBE811001EB Troubleshooting <Contents of abnormalities and retries> : ON : OFF : Blink Contents of Error Confirmation 1 Confirmation 2 Reference Code Main content Details H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P l h k h l l h l k h h h h h Intermediate Pressure Sensor Defective S1NPH2 (∗1) Failure...
Page 160: Booster Unit
Troubleshooting SiBE811001EB 8.3.2 Booster Unit Using the BS buttons on the outdoor unit main PCB (A1P) enable a various settings below: MODE RETURN TEST RESET The following 3 modes are available: • Setting mode 1 ..Initial state (while in normal operation). This mode indicates the current operation state (normal, abnormal, preparing).
Page 161 SiBE811001EB Troubleshooting (1) Monitor mode LED Display Data Setting Item Display H1P H2P H3P H4P H5P H6P H7P Press the MODE (BS1) button in "Setting See next l h h h h h h mode 1" and set to "Monitor mode." Abnormality (latest) page k h h h h h k...
Page 162 Troubleshooting SiBE811001EB Check the contents of abnormalities and retries Contents of retires and abnormalities are checked as follows. Press the BS1 (MODE) button in <Display Confirmation 2> "Setting mode 1" switches to "Monitor mode." Press the BS2 (SET) button to indicate confirmation 2 on the lamp display.
Page 163: Troubleshooting By Indication On The Remote Controller
SiBE811001EB Troubleshooting Troubleshooting by Indication on the Remote Controller 8.4.1 Error of External Protection Device Error Code Applicable All indoor models Models Method of Error Detect open or short circuit between external input terminals in indoor unit Detection Error Decision When an open circuit occurs between external input terminals with the remote controller set to "external ON/OFF terminal"...
Page 164: Pcb Abnormality
Troubleshooting SiBE811001EB 8.4.2 PCB Abnormality Error Code Applicable All indoor models Models Method of Error Check data from E²PROM. Detection Error Decision When data could not be correctly received from the E²PROM E²PROM: Type of nonvolatile memory. Maintains memory contents even when the power Conditions supply is turned OFF.
Page 165: Drain Level Control System (S1L) Abnormality
SiBE811001EB Troubleshooting 8.4.3 Drain Level Control System (S1L) Abnormality Error Code Applicable All indoor models Models Method of Error By float switch OFF detection Detection Error Decision When rise of water level is not a condition and the float switch goes OFF Conditions Supposed 200V power supply is not provided...
Page 166 Troubleshooting SiBE811001EB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Is power supply Provide 200V power supply. 200V provided? The float switch is A short circuit connected to X8A connector is Connect either a short circuit of the indoor unit...
Page 167: Fan Motor (M1F) Lock, Overload
SiBE811001EB Troubleshooting 8.4.4 Fan Motor (M1F) Lock, Overload Error Code Applicable FXFQ Models Method of Error Abnormal fan revolutions are detected by a signal output from the fan motor. Detection Error Decision When the fan revolutions do not increase Conditions Supposed Broken wires in, short circuit of, or disconnection of connectors from the fan motor harness Defective fan motor...
Page 168 Troubleshooting SiBE811001EB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn OFF the power supply, and then wait for a period of 10 minutes. Are there any Remove the foreign matters. foreign matters around the fan? Is the connector...
Page 169: Indoor Unit Fan Motor Abnormality
SiBE811001EB Troubleshooting Indoor Unit Fan Motor Abnormality Error Code Applicable FXHQ Models Method of Error This error is detected if there is no revolutions detection signal output from the fan motor. Detection Error Decision When no revolutions can be detected even at the maximum output voltage to the fan Conditions Supposed Defective indoor unit fan motor...
Page 170 Troubleshooting SiBE811001EB Error Code Applicable FXMQ Models Method of Error Detection from the current flow on the fan PCB Detection Detection from the RPM of the fan motor in operation Detection from the position signal of the fan motor Detection from the current flow on the fan PCB when the fan motor starting operation Error Decision An overcurrent flows The RPM is less than a certain level for 6 seconds.
Page 171 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn OFF the power and wait for 10 minutes. There is a foreign Remove the foreign matter. matter around the fan.
Page 172 Troubleshooting SiBE811001EB The resistors among U, V, and W Replace the fan motor. are unbalanced or short-circuited. Remove the signal connector from the fan motor and check the resistance (∗2). Between V and GND terminals, and between Replace the fan motor. GND and H , or H terminals are short-...
Page 173: Indoor Unit Fan Motor Overload / Overcurrent / Lock
SiBE811001EB Troubleshooting 8.4.5 Indoor Unit Fan Motor Overload / Overcurrent / Lock Error Code Applicable FXMQ Models Method of Error Detects when the separate fan power supply is turned OFF. Detection Error Decision When the separate power supply for the indoor unit fan is not detected as being turned ON during operation.
Page 174: Swing Flap Motor (Ma) Abnormality
Troubleshooting SiBE811001EB 8.4.6 Swing Flap Motor (MA) Abnormality Error Code Applicable FXCQ, FXHQ Models Method of Error Utilizes ON/OFF of the limit switch when the motor turns. Detection Error Decision When ON/OFF of the micro-switch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount of time (about 30 seconds).
Page 175 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Is power supply Provide 200V power supply. 200V provided? Indoor unit is a model equipped Replace the indoor unit PCB. with a swing flap function.
Page 176: Power Supply Voltage Abnormality
Troubleshooting SiBE811001EB 8.4.7 Power Supply Voltage Abnormality Error Code Applicable FXMQ Models Method of Error Detect error checking the input voltage of fan motor. Detection Error Decision When the input voltage of fan motor is 150V or less, or 386V or more. Conditions Supposed Power-supply voltage error...
Page 177: Electronic Expansion Valve Error / Dust Clogging
SiBE811001EB Troubleshooting 8.4.8 Electronic Expansion Valve Error / Dust Clogging Error Code Applicable FXFQ Models Method of Error Check coil condition of electronic expansion valve by using micro-computer. Detection Check dust clogging condition of electronic expansion valve main body by using micro- computer.
Page 178 Troubleshooting SiBE811001EB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Replace the electronic When power is supplied. expansion valve main body. Electronic expansion valve is Shut the power supply OFF after connected to X7A of indoor unit PCB.
Page 179: Electronic Expansion Valve Coil Abnormality
SiBE811001EB Troubleshooting Electronic Expansion Valve Coil Abnormality Error Code Applicable Indoor units except FXFQ models Models Method of Error Check coil condition of electronic expansion valve by using micro-computer. Detection Error Decision Pin input for electronic expansion valve coil is abnormal when initializing micro-computer. Conditions Supposed Defective drive of electronic expansion valve...
Page 180: Humidifier Unit Defect
Troubleshooting SiBE811001EB 8.4.9 Humidifier Unit Defect Error Code Applicable All indoor models Models Method of Error Water leakage is detected based on float switch ON/OFF operation while the compressor is in Detection non-operation. Error Decision When the float switch changes from ON to OFF while the compressor is in non-operation. ∗...
Page 181: Capacity Determination Device Abnormality
SiBE811001EB Troubleshooting 8.4.10 Capacity Determination Device Abnormality Error Code Applicable FXFQ, FXHQ, FXMQ Models Method of Error Capacity is determined according to resistance of the capacity setting adaptor and the memory Detection inside the IC memory on the indoor unit PCB, and whether the value is normal or abnormal is determined.
Page 182: Error Transmission (Between Indoor Unit Pcb And Fan Pcb)
Troubleshooting SiBE811001EB 8.4.11 Error Transmission (Between Indoor Unit PCB and Fan PCB) Error Code Applicable FXMQ Models Method of Error Check the condition of transmission between indoor unit PCB (A1P) and fan PCB (A2P) using computer. Detection Error Decision When normal transmission is not conducted for certain duration. Conditions Supposed Connection defect of the connecter between indoor unit PCB (A1P) and fan PCB (A2P)
Page 183 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Is the connector between indoor unit PCB (A1P) and fan Connect the connector PCB (A2P) accurately. accurately connected? (∗1) Confirm the condition of transmission on indoor unit PCB using field setting mode.
Page 184: Indoor Unit Thermistors Abnormality
Troubleshooting SiBE811001EB 8.4.12 Indoor Unit Thermistors Abnormality C4, C5, C9 Error Code Applicable All indoor models Models Method of Error Error detection is carried out by temperature detected by each thermistor. Detection Error Decision When the thermistor becomes disconnected or shorted while the unit is running. Conditions Supposed Wiring defect...
Page 185: Combination (Between Indoor Unit Pcb And Fan Pcb)
SiBE811001EB Troubleshooting 8.4.13 Combination (Between Indoor Unit PCB and Fan PCB) Error Code Applicable FXMQ Models Method of Error Conduct open line detection with fan PCB (A2P) using indoor unit PCB (A1P). Detection Error Decision When the communication data of fan PCB (A2P) is determined as incorrect. Conditions Supposed Defective fan PCB (A2P)
Page 186: Discharge Air Thermistor Abnormality
Troubleshooting SiBE811001EB 8.4.14 Discharge Air Thermistor Abnormality Error Code Applicable FXMQ Models Method of Error Error detection is carried out by temperature detected by discharge air thermistor. Detection Error Decision When the thermistor becomes disconnected or shorted while the unit is running. Conditions Supposed Wiring defect...
Page 187: Room Temperature Thermistor In Remote Controller Abnormality
SiBE811001EB Troubleshooting 8.4.15 Room Temperature Thermistor in Remote Controller Abnormality Error Code Applicable All indoor models Models Method of Error Error detection is carried out by temperature detected by room temperature thermistor in remote controller Detection Error Decision When the room temperature thermistor in remote controller becomes disconnected or shorted while the unit is running.
Page 188: Std Compressor Motor Overcurrent/Lock
Troubleshooting SiBE811001EB 8.4.16 STD Compressor Motor Overcurrent/Lock Error Code Applicable LRYEQ16AY1 Models Method of Error Detects the overcurrent with current sensor (CT). Detection Error Decision Error is decided when the detected current value exceeds 15.0A for 2 seconds. Conditions Supposed...
Page 189 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Open the stop valve. Is the stop valve open? Obstacle exists Remove the obstacle. around the air outlet. Is the power supply Correct the power supply voltage normal?
Page 190: Pcb Abnormality
Troubleshooting SiBE811001EB 8.4.17 PCB Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Abnormality is detected under the communication conditions in the hardware section between the indoor unit and outdoor unit. Detection Error Decision When the communication conditions in the hardware section between the indoor unit and the outdoor unit are not normal.
Page 191: Earth Leakage
SiBE811001EB Troubleshooting 8.4.18 Earth Leakage Error Code Applicable LRYEQ16AY1 Models Method of Error When there is a earth leakage (breaker ON/OFF) Time elapsed after power-ON Detection When there is a earth leakage (leakage detector PCB) The continuity of the high pressure switch is checked using the protective device circuit.
Page 192 Troubleshooting SiBE811001EB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. More than 10 seconds passed Reset the power with the since power-ON. operation switch set to OFF. Earth leakage (breaker ON/OFF): E2 Shut OFF power.
Page 193: High Pressure Switch Abnormality
SiBE811001EB Troubleshooting 8.4.19 High Pressure Switch Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Abnormality is detected when the contact of the high pressure protection switch opens. Detection Error Decision Error is generated when the high pressure switch activation count reaches the number specific to the operation mode.
Page 194 Troubleshooting SiBE811001EB Service Checker Connect the service checker to compare the “high pressure” value and the actual measurement value by pressure sensor (Refer to ∗1) by using the service checker. Check if the “high pressure” value and the Replace the outdoor unit main actual measurement value by pressure sensor PCB (A1P) or sub PCB (A2P).
Page 195: Low Pressure Sensor Abnormality
SiBE811001EB Troubleshooting 8.4.20 Low Pressure Sensor Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Abnormality is detected by the pressure value with the low pressure sensor. Detection Error Decision Error is generated when the low pressure is dropped under compressor operation.
Page 196 Troubleshooting SiBE811001EB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Open the stop valve. Is the stop valve open? (1) Mount a pressure gauge on the low pressure service port. (2) Reset the operation using the remote controller, and then restart the operation.
Page 197: Inverter Compressor Motor Lock
Troubleshooting 8.4.21 Inverter Compressor Motor Lock Error Code Applicable LRYEQ16AY1 Models Method of Error Inverter PCB takes the position signal from UVW line connected between the inverter and compressor, and the error is detected when any abnormality is observed in the phase-current Detection waveform.
Page 198 Troubleshooting SiBE811001EB Restart and check the operation. Check Conclude the work if the condition There is a possibility of defect occurs again. of pressure equalizing. Check the refrigerant circuit. Power ON Check if the start mode is in the high Defective pressure equalizing differential pressure Check the refrigerant circuit.
Page 199: Outdoor Unit Fan Motor Abnormality
SiBE811001EB Troubleshooting 8.4.22 Outdoor Unit Fan Motor Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Detect an error for the fan motor circuit based on the number of rotation detected by hole IC during the fan motor operation. Detection...
Page 200 Troubleshooting SiBE811001EB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check in the monitor mode Models have 2 fans. Check electric motor (electric motor 1 or 2) corresponding to error code “...
Page 201 SiBE811001EB Troubleshooting No continuity of fuse Replace the fan inverter PCB. (F1U) on the fan inverter PCB. Unable to rotate the fan manually with Replace the corresponding fan ease when removing motor. the connector of the fan motor. Resistance value between the power supply wire terminal of Replace the corresponding fan...
Page 202: Electronic Expansion Valve Coil Abnormality
Troubleshooting SiBE811001EB 8.4.23 Electronic Expansion Valve Coil Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Check disconnection of connector To be detected based on continuity existence of electronic expansion valve coil Detection Error Decision No current is detected in the common (COM [+]) when power supply is ON.
Page 203 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn power supply OFF, and turn power supply ON again. External factor other than error Return to normal? (for example, noise etc.).
Page 204: Booster Unit Warning
Troubleshooting SiBE811001EB 8.4.24 Booster Unit Warning Error Code Applicable LRYEQ16AY1 LCBKQ3AV1 Models Method of Error Judge using the outdoor unit main PCB during backing-up of the booster unit. Detection Error Decision LP, Td, Tg, Tl sensors go OFF during abnormalities...
Page 205: Target Evaporating Temperature Setting Abnormality
SiBE811001EB Troubleshooting 8.4.25 Target Evaporating Temperature Setting Abnormality Error Code Applicable LRYEQ16AY1 LCBKQ3AV1 Models Method of Error The target evaporating temperature setting error by communication box (BRR9A1V1) Detection Error Decision The target evaporating temperature setting is -20 degree or less by communication box.
Page 206: Transmission Error Between Outdoor Unit And Booster Unit
Troubleshooting SiBE811001EB 8.4.26 Transmission Error between Outdoor unit and Booster Unit Error Code Applicable LRYEQ16AY1 LCBKQ3AV1 Models Method of Error Check if the transmission between outdoor unit and booster unit is correctly executed using micro-computer. Detection Error Decision When transmission is not carried out normally for a certain amount of time...
Page 207: Booster Unit Warning
SiBE811001EB Troubleshooting 8.4.27 Booster Unit Warning Error Code Applicable LRYEQ16AY1 LCBKQ3AV1 Models Method of Error Judge the booster unit system stop and transmission failure using the outdoor unit main PCB Detection Error Decision Booster unit system stop Transmission failure between outdoor and booster units...
Page 208: Abnormal Discharge Pipe Temperature
Troubleshooting SiBE811001EB 8.4.28 Abnormal Discharge Pipe Temperature Error Code Applicable LRYEQ16AY1 Models Method of Error Abnormality is detected according to the temperature detected by the discharge pipe temperature thermistor. Detection Error Decision When the discharge pipe temperature rises to an abnormally high level •...
Page 209: Wet Operation From Refrigeration Suction Pipe
SiBE811001EB Troubleshooting 8.4.29 Wet Operation from Refrigeration Suction Pipe Error Code Applicable LRYEQ16AY1 Models Method of Error Detect an error for discharge SH and suction SH of driving compressor Detection Error Decision These conditions continued for 10 minutes. Conditions Suction SH of refrigeration side < 5K &...
Page 210: Wet Operation From Injection Pipe
Troubleshooting SiBE811001EB 8.4.30 Wet Operation from Injection Pipe Error Code Applicable LRYEQ16AY1 Models Method of Error Detect an error for discharge SH and suction SH of driving compressor Detection Error Decision These conditions continued for 10 minutes. Conditions Suction SH of refrigeration side > 5K &...
Page 211: 3-Sensor Error
SiBE811001EB Troubleshooting 8.4.31 3-sensor Error Error Code Applicable LRYEQ16AY1 Models Method of Error Error is detected from the values detected by pressure sensors and temperature sensors (thermistors). Detection Error Decision 3 or more out of the pressure sensors and the temperature sensors (thermistors) causes a "Sensor error", respectively.
Page 212: Error Related To High Pressure Switch
Troubleshooting SiBE811001EB 8.4.32 Error Related to High Pressure Switch Error Code Applicable LRYEQ16AY1 Models Method of Error Detect continuity in the high pressure switch in the protective device circuit. Detection Error Decision While the compressor stops running, there is no continuity in the high pressure switch.
Page 213: Low Pressure Switch Failure Or Operate
SiBE811001EB Troubleshooting 8.4.33 Low Pressure Switch Failure or Operate Error Code Applicable LRYEQ16AY1 Models Method of Error Detect the continuity of the low pressure switch through the protection device circuit. Detection Error Decision When STD1 is stopped, there is no continuity of the low pressure switch for 10 minutes or more When STD1 is running, the low pressure switch operates.
Page 214: Outdoor Unit Fan Motor Signal Abnormality
Troubleshooting SiBE811001EB 8.4.34 Outdoor Unit Fan Motor Signal Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Detection of abnormal signal from fan motor. Detection Error Decision In case of detection of abnormal signal at starting fan motor. Conditions Supposed...
Page 215 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the fan motor corresponding to the error code “ ” in the monitor mode. Cut the power supply OFF. Check if signal wire connector for the Connect correctly.
Page 216: Outdoor Air Thermistor Abnormality
Troubleshooting SiBE811001EB 8.4.35 Outdoor Air Thermistor Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Error is detected from the temperature detected by the outdoor air thermistor. Detection Error Decision When the outdoor air temperature thermistor has short circuit or open circuit...
Page 217: Intermediate/High Pressure Sensor Abnormality
SiBE811001EB Troubleshooting 8.4.36 Intermediate/High Pressure Sensor Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Error is detected from pressure detected by high pressure sensor. Detection Error Decision When the sensor is short circuit or open circuit (more than 4.22MPa or less than 0.01MPa)
Page 218 Troubleshooting SiBE811001EB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. 1. Set the high pressure gauge upright 2. Connect the checker for VRV to the gauge Are the characteristics of the high pressure sensor Replace the high pressure normal? (Make a...
Page 219: Low Pressure Sensor Abnormality
SiBE811001EB Troubleshooting 8.4.37 Low Pressure Sensor Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Error is detected from pressure detected by low pressure sensor. Detection Error Decision When the sensor is short circuit or open circuit (more than 1.77MPa or less than -0.01MPa)
Page 220 Troubleshooting SiBE811001EB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. 1. Set the low pressure gauge upright. 2. Connect the checker for VRV to the gauge. Are the characteristics of the low pressure sensor normal? (Make Replace the low pressure...
Page 221: Current Sensor Abnormality
SiBE811001EB Troubleshooting 8.4.38 Current Sensor Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Error is detected according to the current value detected by current sensor. Detection Error Decision When the current value detected by current sensor becomes 2A or lower, or 40A or more during...
Page 222: Outdoor Unit Thermistor Abnormality
Troubleshooting SiBE811001EB 8.4.39 Outdoor Unit Thermistor Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Error is detected from the temperature by each thermistor Detection Error Decision When a thermistor disconnection or short circuit occurs during operation Conditions Supposed Defective connection of thermistor...
Page 223 Is the resistance normal? Replace the thermistor. CHECK 13 Replace the outdoor unit PCB. ∗1. Error code, details of trouble and electric symbol LRYEQ16AY1 Error code Corresponding thermistor Electric symbol Connector Discharge pipe (M1C) thermistor R31T...
Page 224: Inverter Pcb Abnormality
Troubleshooting SiBE811001EB 8.4.40 Inverter PCB Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Error is detected based on the current value during waveform output before starting compressor. Detection Error is detected based on the value from current sensor during synchronous operation when starting the unit.
Page 225: Inverter Radiating Fin Temperature Rise Abnormality
SiBE811001EB Troubleshooting 8.4.41 Inverter Radiating Fin Temperature Rise Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Fin temperature is detected by the thermistor of the radiation fin. Detection Error Decision When the temperature of the inverter radiation fin increases 84°C or more.
Page 226: Momentary Overcurrent Of Inverter Compressor
Troubleshooting SiBE811001EB 8.4.42 Momentary Overcurrent of Inverter Compressor Error Code Applicable LRYEQ16AY1 Models Method of Error Error is detected from the current flowing in the power transistor. Detection Error Decision When an excessive current (32.3A) flows in the power transistor...
Page 227: Momentary Overcurrent Of Inverter Compressor
SiBE811001EB Troubleshooting 8.4.43 Momentary Overcurrent of Inverter Compressor Error Code Applicable LRYEQ16AY1 Models Method of Error Error is detected from the current flowing in the power transistor. Detection Error Decision When inverter secondary current is below. (1) 19.0A or more continues for 5 seconds.
Page 228 Troubleshooting SiBE811001EB Troubleshooting Output current check Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check if the stop Open the stop valve. valve is open. Check if the Replace the compressor lead compressor lead wires are normal.
Page 229: Inverter Compressor Starting Failure
SiBE811001EB Troubleshooting 8.4.44 Inverter Compressor Starting Failure Error Code Applicable LRYEQ16AY1 Models Method of Error Detect the failure based on the signal waveform of the compressor. Detection Error Decision Starting the compressor does not complete. Conditions Supposed Failure to open the stop valve...
Page 230 Troubleshooting SiBE811001EB Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Is the individual system applied to the outdoor unit? Individual system Multi system While in monitor mode, check whether While in monitor mode, check the the system is right-hand (control PCB outdoor unit concerned.
Page 231 SiBE811001EB Troubleshooting Continued from the previous page. (Start failure due to aged operation.) Refrigerant is melting. (The unit is out of power supply for Cancel the melting state of more than 6 hours.) refrigerant. Check if the insulation Replace the inverter resistance of the compressor is 100kΩ...
Page 232: Transmission Error Between Inverter And Outdoor Unit Main Pcb
Troubleshooting SiBE811001EB 8.4.45 Transmission Error between Inverter and Outdoor Unit Main PCB Error Code Applicable LRYEQ16AY1 Models Method of Error Check the communication state between inverter PCB and outdoor unit main PCB by micro- computer. Detection Error Decision When the correct communication is not conducted in certain period...
Page 233 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Are the connectors of the outdoor unit main PCB, and Properly connect the inverter PCB all securely connectors. connected? (∗1) Is the type of the inverter Replace it with a correct PCB.
Page 234: Inverter Over-Ripple Protection
Be sure to explain to the user that there is a "power supply it up to him to improve the imbalance. imbalance" for which DAIKIN is not responsible. ∗1. Measure voltage at the X1M power supply terminal block. ∗2. Measure voltage at connector (R, S and T wire pins) of the diode module inside the inverter while the compressor is running.
Page 235: Inverter Radiation Fin Temperature Rise Sensor Abnormality
SiBE811001EB Troubleshooting 8.4.47 Inverter Radiation Fin Temperature Rise Sensor Abnormality Error Code Applicable LRYEQ16AY1 Models Method of Error Resistance of radiation fin thermistor is detected when the compressor is not operating. Detection Error Decision When the resistance value of thermistor becomes a value equivalent to open or short circuited status.
Page 236: Field Setting Abnormality After Replacing Outdoor Unit Main Pcb Or Defective Combination Of Pcb
Troubleshooting SiBE811001EB 8.4.48 Field Setting Abnormality after Replacing Outdoor Unit Main PCB or Defective Combination of PCB Error Code Applicable LRYEQ16AY1 Models Method of Error This error is detected according to communications with the inverter. Detection Error Decision Make judgement according to communication data on whether or not the type of the inverter PCB is correct.
Page 237: Reverse Phase, Open Phase
SiBE811001EB Troubleshooting 8.4.49 Reverse Phase, Open Phase Error Code Applicable LRYEQ16AY1 Models Method of Error The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged. Detection Error Decision When a power supply is reverse phase, or T phase is open phase.
Page 238: Power Supply Insufficient Or Instantaneous Failure
Troubleshooting SiBE811001EB 8.4.50 Power Supply Insufficient or Instantaneous Failure Error Code Applicable LRYEQ16AY1 Models Method of Error Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Detection Error Decision When the voltage aforementioned is less than 190V...
Page 239 SiBE811001EB Troubleshooting CHECK 4 Replace the inverter PCB (A4P). Is the power transistor normal? Remove and insert the connectors shown below. X4A (A4P) ↔ X20A (A1P) X6A (A4P) ↔ X28A (A1P) Has the inverter PCB Replace the inverter PCB (A4P). caused damage? ∗...
Page 240: Transmission Error Between Indoor Units And Outdoor Units
Troubleshooting SiBE811001EB 8.4.51 Transmission Error between Indoor Units and Outdoor Units Error Code Applicable All indoor models LRYEQ16AY1 Models Method of Error Check if the transmission between indoor unit and outdoor unit is correctly executed using micro-computer. Detection Error Decision...
Page 241 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check if indoor unit PCB or outdoor unit PCB has been Press the RESET button on the replaced. Or check if indoor/outdoor, outdoor/ outdoor unit main PCB of the outdoor relay wires has...
Page 242: Transmission Error Between Remote Controller And Indoor Unit
Troubleshooting SiBE811001EB 8.4.52 Transmission Error between Remote Controller and Indoor Unit Error Code Applicable All indoor models Models Method of Error Check the system using micro-computer is signal transmission between indoor unit and remote controller is normal. Detection Error Decision Normal transmission does not continue for 2 min.
Page 243: Transmission Error Between Outdoor Units
SiBE811001EB Troubleshooting 8.4.53 Transmission Error between Outdoor Units Error Code Applicable LRYEQ16AY1 Models Method of Error With the micro-computer, check whether there is transmission between the outdoor units. Detection Error Decision When transmission is not carried out normally for a certain amount of time...
Page 244: Transmission Error Between Main And Sub Remote Controllers
Troubleshooting SiBE811001EB 8.4.54 Transmission Error between Main and Sub Remote Controllers Error Code Applicable All indoor models Models Method of Error In case of controlling with 2-remote controller, check the system using micro-computer if signal transmission between indoor unit and remote controller (main and sub) is normal. Detection Error Decision Normal transmission does not continue for specified period.
Page 245: Transmission Error Between Indoor And Outdoor Units In The Same System
8.4.55 Transmission Error between Indoor and Outdoor Units in the Same System Error Code Applicable All indoor models LRYEQ16AY1 Models Method of Error Detect error signal for the other indoor units within the circuit by outdoor unit PCB. Detection Error Decision When the error decision is made on any other indoor unit within the system concerned.
Page 246: Improper Combination Of Indoor And Outdoor Units
Troubleshooting SiBE811001EB 8.4.56 Improper Combination of Indoor and Outdoor Units Error Code Applicable LRYEQ16AY1 Models Method of Error The number of indoor units is out of the allowable range. Detection Error Decision The error decision is made as soon as either of the abnormalities aforementioned is detected.
Page 247: Address Duplication Of Central Remote Controller
SiBE811001EB Troubleshooting 8.4.57 Address Duplication of Central Remote Controller Error Code Applicable All indoor models Models Method of Error Detected from centralized address signals. Detection Error Decision When the same address as the centralized address of target indoor units is detected on another indoor unit.
Page 248: Transmission Error Between Indoor Unit And Central Remote Controller
Troubleshooting SiBE811001EB 8.4.58 Transmission Error between Indoor Unit and Central Remote Controller Error Code Applicable All indoor models Central remote controller Models Method of Error Use a micro-computer to check whether or not normal transmission is accomplished between the indoor unit and the central remote controller. Detection Error Decision When no normal transmission is accomplished for a fixed period of time...
Page 249 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Has an indoor unit once connected been Reset power supplies to all disconnected or centralized control equipment changed in address? simultaneously.
Page 250: System Is Not Set Yet
Troubleshooting SiBE811001EB 8.4.59 System is not Set yet Error Code Applicable All indoor models LRYEQ16AY1 Models Method of Error Error is detected by wiring check operation. Detection Error Decision The number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature.
Page 251: System Abnormality And Refrigerant System Address Undefined
SiBE811001EB Troubleshooting 8.4.60 System Abnormality and Refrigerant System Address Undefined Error Code Applicable All indoor models LRYEQ16AY1 Models Method of Error Detect an indoor unit with no address setting. Detection Error Decision The defective decision is made as soon as the abnormality aforementioned is detected.
Page 252: Troubleshooting (Booster Unit)
Troubleshooting SiBE811001EB Troubleshooting (Booster Unit) 8.5.1 PCB Defect LED Indications Error Code l h k h h l l First digit l k h h h h l Second digit Applicable LCBKQ3AV1 Models Method of Error Abnormality is detected under the communication conditions in the hardware section between the showcase and booster unit.
Page 253: Earth Leakage
SiBE811001EB Troubleshooting 8.5.2 Earth Leakage LED Indications Error Code l h k h h l l First digit l k h h h l h Second digit Applicable LCBKQ3AV1 Models Method of Error Error is detected by the earth leakage detector Detection Error Decision When there is a earth leakage (breaker ON/OFF)
Page 254: High Pressure Switch Abnormality
Troubleshooting SiBE811001EB 8.5.3 High Pressure Switch Abnormality LED Indications Error Code l h k h h l l First digit l k h h h l l Second digit Applicable LCBKQ3AV1 Models Method of Error The protection device circuit checks continuity in the high pressure switch Detection Error Decision When the high pressure switch is actuated...
Page 255 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the state of installation. (∗1) Is the stop valve open? Open the stop valve. the high pressure switch connector properly connected Connect correctly.
Page 256: Low Pressure Sensor Abnormality
Troubleshooting SiBE811001EB 8.5.4 Low Pressure Sensor Abnormality LED Indications Error Code l h k h h l l First digit l k h h l h h Second digit Applicable LCBKQ3AV1 Models Method of Error Abnormality is detected by the pressure value with the low pressure sensor. Detection Error Decision Error is generated when the low pressure is dropped under compressor operation.
Page 257 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Open the stop valve. Is the stop valve open? (1) Mount a pressure gauge on the low pressure service port. (2) Reset the operation and then restart the operation.
Page 258: Inverter Compressor Motor Lock
Troubleshooting SiBE811001EB 8.5.5 Inverter Compressor Motor Lock LED Indications Error Code l h k h h l l First digit l k h h l h l Second digit Applicable LCBKQ3AV1 Models Method of Error Inverter PCB takes the position signal from UVW line connected between the inverter and Detection compressor, and the error is detected when any abnormality is observed in the phase-current waveform.
Page 259 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check if the stop Onsite causes. valve is open. Open the stop valve. Check if the relay wires Replace the relay wires and to the compressor are ensure right connection of the...
Page 260: Error Electronic Expansion Valve Coil
Troubleshooting SiBE811001EB 8.5.6 Error Electronic Expansion Valve Coil LED Indications Error Code l h k h h l l First digit l k h l h h l Second digit Applicable LCBKQ3AV1 Models Method of Error To be detected based on continuity existence of electronic expansion valve coil when the power supply is ON.
Page 261: Abnormal Discharge Pipe Temperature
SiBE811001EB Troubleshooting 8.5.7 Abnormal Discharge Pipe Temperature LED Indications Error Code l h k h l h l First digit l k h h h l l Second digit Applicable LCBKQ3AV1 Models Method of Error Abnormality is detected according to the temperature detected by the discharge pipe temperature thermistor.
Page 262: High Pressure Switch Abnormality
Troubleshooting SiBE811001EB 8.5.8 High Pressure Switch Abnormality LED Indications Error Code l h k h l h h First digit l k h h h l l Second digit Applicable LCBKQ3AV1 Models Method of Error Detect continuity in the high pressure switch in the protective device circuit. Detection Error Decision While the compressor stops running, there is no continuity in the high pressure switch.
Page 263: Outdoor Unit Thermistor Abnormality
SiBE811001EB Troubleshooting 8.5.9 Outdoor Unit Thermistor Abnormality Error Code LED Indications l l h h l l h l l h h l l h l l h h l l h First digit l k h h h l l l k h l h h h l k h l h h l Second digit Applicable LCBKQ3AV1...
Page 264: Low Pressure Sensor Abnormality
Troubleshooting SiBE811001EB 8.5.10 Low Pressure Sensor Abnormality LED Indications Error Code l l h h l l h First digit l k h l l h h Second digit Applicable LCBKQ3AV1 Models Method of Error Error is detected from pressure detected by low pressure sensor. Detection Error Decision When the low pressure sensor is short circuit or open circuit...
Page 265 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Piping for different Correct the piping. circuit is erroneously connected. 1.Set the low pressure gauge. 2.Connect a RAM monitor. Are the characteristics of the low pressure sensor normal? (Make...
Page 266: Inverter Pcb Abnormality
Troubleshooting SiBE811001EB 8.5.11 Inverter PCB Abnormality LED Indications Error Code l h k h l l l First digit l k h h h h l Second digit Applicable LCBKQ3AV1 Models Method of Error Error is detected based on the current value during waveform output before starting compressor.
Page 267: Inverter Radiating Fin Temperature Rise Abnormality
SiBE811001EB Troubleshooting 8.5.12 Inverter Radiating Fin Temperature Rise Abnormality LED Indications Error Code l h k h l l l First digit l k h h l h h Second digit Applicable LCBKQ3AV1 Models Method of Error Fin temperature is detected by the thermistor of the radiation fin. Detection Error Decision When the temperature of the inverter radiation fin increases 92°C or more...
Page 268: Momentary Overcurrent Of Inverter Compressor
Troubleshooting SiBE811001EB 8.5.13 Momentary Overcurrent of Inverter Compressor LED Indications Error Code l h k h l l l First digit l k h h l h l Second digit Applicable LCBKQ3AV1 Models Method of Error Error is detected from the current flowing in the power transistor. Detection Error Decision When an excessive current (36.9A) flows in the power transistor.
Page 269 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check if the stop Open the stop valve. valve is open. Check if the Replace compressor lead wires. compressor lead wires are normal.
Page 270: Momentary Overcurrent Of Inverter Compressor
Troubleshooting SiBE811001EB 8.5.14 Momentary Overcurrent of Inverter Compressor LED Indications Error Code l h k h l l l First digit l k h l h h h Second digit Applicable LCBKQ3AV1 Models Method of Error Error is detected from the current flowing in the power transistor. Detection Error Decision When inverter secondary current is below...
Page 271 SiBE811001EB Troubleshooting Troubleshooting Output current check Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check if the stop Open the stop valve. valve is open. Check if the Replace the compressor lead compressor lead wires are normal.
Page 272: Inverter Compressor Starting Failure
Troubleshooting SiBE811001EB 8.5.15 Inverter Compressor Starting Failure LED Indications Error Code l h k h l l l First digit l k h l h h l Second digit Applicable LCBKQ3AV1 Models Method of Error Detect the failure based on the signal waveform of the compressor. Detection Error Decision Starting the compressor does not complete.
Page 273 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check if it is the Go on to the next page. first time to start after installation. (Starting failure due to aged operation.) Check if a right Charge a right amount of...
Page 274 Troubleshooting SiBE811001EB Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Continued from the previous page. (Start failure due to aged operation.) Refrigerant is melting. Cancel the melting state of refrigerant.
Page 275: Transmission Error Between Inverter And Control Pcb
SiBE811001EB Troubleshooting 8.5.16 Transmission Error between Inverter and Control PCB LED Indications Error Code l h k h l l l First digit l k h l l h h Second digit Applicable LCBKQ3AV1 Models Method of Error Check the communication state between inverter PCB and control PCB by micro-computer. Detection Error Decision When the correct communication is not conducted in certain period...
Page 276: Inverter Over-Ripple Protection
Be sure to explain to the user that there is a "power supply it up to him to improve the imbalance. imbalance" for which DAIKIN is not responsible. ∗1. Measure voltage at the X1M power supply terminal block. ∗2. Measure voltage at connector (R, S and T wire pins) of the diode module inside the inverter while the compressor is running.
Page 277: Inverter Radiating Fin Temperature Rise Sensor Abnormality
SiBE811001EB Troubleshooting 8.5.18 Inverter Radiating Fin Temperature Rise Sensor Abnormality LED Indications Error Code l h k l h h h First digit l k h h l h h Second digit Applicable LCBKQ3AV1 Models Method of Error Resistance of radiation fin thermistor is detected when the compressor is not operating. Detection Error Decision When the resistance value of thermistor becomes a value equivalent to open or short circuited...
Page 278: Field Setting After Replacing Outdoor Unit Main Pcb Or Combination Of Pcb Abnormality
Troubleshooting SiBE811001EB 8.5.19 Field Setting after Replacing Outdoor Unit Main PCB or Combination of PCB Abnormality LED Indications Error Code l h k l h h h First digit l k h l l h l Second digit Applicable LCBKQ3AV1 Models Method of Error This error is detected according to communications with the inverter.
Page 279: Refrigerant Shortage Alert
SiBE811001EB Troubleshooting 8.5.20 Refrigerant Shortage Alert LED Indications Error Code l h k l h h l First digit l k h h h h h Second digit Applicable LCBKQ3AV1 Models Method of Error Judged by aperture of electronic expansion valve and each temperature and pressure. Detection Error Decision When electronic expansion valve is fully open and the conditions below are met:...
Page 280: Power Supply Insufficient Or Instantaneous Failure
Troubleshooting SiBE811001EB 8.5.21 Power Supply Insufficient or Instantaneous Failure LED Indications Error Code l h k l h h l First digit l k h h h l h Second digit Applicable LCBKQ3AV1 Models Method of Error Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Detection Error Decision When the voltage aforementioned is less than 170V...
Page 281 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the condition of the power supply. Check if power supply voltage is 200V ± 10%. Check if there is open phase or defective wiring.
Page 282: Transmission Error Between Outdoor Units And Booster Units
Troubleshooting SiBE811001EB 8.5.22 Transmission Error between Outdoor Units and Booster Units LED Indications Error Code l h k l h h l First digit l k h h l h h Second digit Applicable LCBKQ3AV1 Models Method of Error Check if the transmission between outdoor unit and booster unit is correctly executed using micro-computer.
Page 283 SiBE811001EB Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check if outdoor unit PCB or booster unit PCB has been replaced. Or check if Press the RESET button on the indoor/outdoor, main PCB of the master outdoor outdoor/ outdoor...
Page 284: System Is Not Set Yet
Troubleshooting SiBE811001EB 8.5.23 System is not Set yet LED Indications Error Code l h k l h h l First digit l k h l l l l Second digit Applicable LCBKQ3AV1 Models Method of Error Error is detected by wiring check operation. Detection Error Decision The number of indoor units in terms of transmission is not corresponding to that of indoor units...
Page 285: System Abnormality And Refrigerant System Address Undefined
SiBE811001EB Troubleshooting 8.5.24 System Abnormality and Refrigerant System Address Undefined LED Indications Error Code l h k l h h l First digit l k h l h l l Second digit Applicable All indoor models LCBKQ3AV1 Models Method of Error Detect an indoor unit with no address setting.
Page 286: Check
Troubleshooting SiBE811001EB 8.5.25 Check CHECK 1 Check for Causes of Rise in High Pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the defective points. ← Check to be sure the stop valve is Stop valve closed open. Local High pipe ←...
Page 287 SiBE811001EB Troubleshooting CHECK 2-1 Check for Causes of Dropping Low Pressure (Air conditioning) Referring to the Fault Tree Analysis (FTA) shown below, probe the defective points. ← Are the electrical characteristics Defective low pressure sensor Defective [In cooling] normal? compressor (See ∗1.) ←...
Page 288 Troubleshooting SiBE811001EB CHECK 2-2 Check for Causes of Dropping Low Pressure (Refrigeration) Referring to the Fault Tree Analysis (FTA) shown below, probe the defective points. [In cooling] ← Are the electrical characteristics (See ∗1.) Defective Defective low pressure sensor normal? compressor Defective ←...
Page 289 SiBE811001EB Troubleshooting CHECK 3-1 Check the Factors of Overheat Operation (Air conditioning) Identify the defective points referring to the failure factor analysis (FTA) as follows. ← Check if coil resistance and Defective valve coil Subcooling insulation are normal. electronic Defective valve body expansion Defective valve failure...
Page 290 Troubleshooting SiBE811001EB CHECK 3-2 Check the Factors of Overheat Operation (Refrigeration) Identify the defective points referring to the failure factor analysis (FTA) as follows. Subcooling ← Check if coil resistance and Defective valve coil electronic insulation are normal. expansion Defective valve body valve failure ←...
Page 291 SiBE811001EB Troubleshooting CHECK 3-3 Check the Factors of Overheat Operation (Booster Unit) Identify the defective points referring to the failure factor analysis (FTA) as follows. ← Check if coil resistance and Defective valve coil Subcooling insulation are normal. electronic [In cooling mode only] Defective valve body expansion valve failure...
Page 292 Troubleshooting SiBE811001EB CHECK 4 Power Transistor Check Perform the following procedures prior to check. (1) Power OFF. (2) Remove all the wiring connected to the PCB where power transistors are mounted on. ∗ Preparing a tester in the analog system is recommended. [Preparation] A tester in the digital system with diode check function will ·...
Page 293 SiBE811001EB Troubleshooting CHECK 11 Check on Connector of Fan Motor (Power Supply Cable) (1) Turn OFF the power supply. Measure the resistance between phases of U,V,W at the motor side connectors (3-core wire) to check that the values are balanced and there is no short circuiting, while connector or relay connector is disconnected.
Page 294 Troubleshooting SiBE811001EB CHECK 13 Thermistor Resistance / Temperature Characteristics Booster unit For Double tube heat exchanger inlet For Double tube heat exchanger outlet Outdoor unit For outdoor air For suction pipe R21T, R22T Outdoor unit For radiation fin R1T (A4P) For plate type heat exchanger outlet For heat exchanger outlet TºC...
Page 295 SiBE811001EB Troubleshooting Booster unit For discharge pipe Outdoor unit For discharge pipe R31~33T T°C kΩ T°C kΩ T°C kΩ T°C kΩ T°C kΩ T°C kΩ 640.44 624.65 72.32 50.5 70.96 13.35 100.5 13.15 609.31 594.43 69.64 51.5 68.34 12.95 101.5 12.76 579.96 565.78...
Page 296 Troubleshooting SiBE811001EB CHECK 14 Pressure Sensor = 1.38V -0.69 : Output Voltage [High Side] V = 0.57V -0.28 : Output Voltage [Low Side] V : High pressure (MPa) Detected Pressure : Low pressure (MPa) High Pressure (P Low Pressure (P Output Voltage (V CONVENI-PACK...
Page 297: Troubleshooting By Ram Monitor (Outdoor Unit)
SiBE811001EB Troubleshooting Troubleshooting by RAM Monitor (Outdoor Unit) Using the RAM monitor makes it possible to check the following operating data. <Mode 1> SP_No SP number Ver. Version of software [MAIN] Operation_SW Operating switch ON/OFF (OFF/ON:0/1) Energy_saving_SW Evaporating temperature shift contact point ON/OFF (OFF/ON:0/1) LPSpoint_of_contact STD1 compressor's low pressure protection LPS ON/OFF (OFF/ON:0/1) A_low_tone_point_of_contact...
Page 298 Troubleshooting SiBE811001EB [State] State 1 Normal display of 5 or 9 State 2 Normal display of 17 [Malfunction] According to ∗1 on P.305 Error_code According to ∗2 on P.306 Error_detail [Retry] INV_standby INV. standby flag (0/1 (standby)) NON1_standby STD1 standby flag (0/1 (standby)) NON2_standby STD2 standby flag (0/1 (standby)) [Irregular stop]...
Page 299 SiBE811001EB Troubleshooting [Actuator] Electric wiring diagram INV. compressor (ON/OFF:0/1) 52C1_[X5A] STD 1 compressor (ON/OFF:0/1) 52C2_[X5B] STD 2 compressor (ON/OFF:0/1) 20S1_[X9A] Four way valve A (ON/OFF:0/1) 20S2_[X8A] Four way valve B (ON/OFF:0/1) 20S3_[X10A] Y3R Four way valve C (ON/OFF:0/1) SV0_[X7A] Receiver gas vent solenoid valve (ON/OFF:0/1) R1_[X14A] Operating signal (ON/OFF:0/1) SV1_[X15A]...
Page 300 Troubleshooting SiBE811001EB [Cleaning_function] During_cleaning When the outdoor unit is receiving indoor cleaning request (0/1) Indoor_unit_cleaning_demand Cleaning request from the indoor unit (0/1) Indoor_unit_During_cleaning During cleaning of the indoor unit (0/1) [Amp/Fin] Total_Amp Total current value of the outdoor unit Inv_1_Amp INV.
Page 301 SiBE811001EB Troubleshooting (3) Select the outdoor ram monitor debug file that has the booster information you wish to observe, and double click on this file. Once the below screen appears, select "Browse and select program (S)", then click "OK". (4) Next, the below (left) screen will appear. Select the "Word Pad" program that is able to edit the debug file, then click "OK".
Page 302 Troubleshooting SiBE811001EB (5) Scroll down the screen that appeared on the right-hand side of step (4) until you reach the screen shown in the figure below. Once this screen appears, in the section that is surrounded by a dotted line, add after "_s" all the values recorded in step (1).
Page 303 SiBE811001EB Troubleshooting Example: If the value recorded in step (1) is "3". Change all from "_s" to "_s+3". (6) After saving the debug file, bring up the ram monitor again, then click "Modify" in the edited debug file as shown in the figure below (left).
Page 304 Troubleshooting SiBE811001EB (7) Once steps (1) to (6) have been followed and set-up accordingly, the booster information should be displayed in the "BU1:0" section as shown below (left). ∗ The below display is in the event that the value "3" was recorded in step (1), and although the values under "BU1:0"...
Page 305 SiBE811001EB Troubleshooting <Mode 2> You can also view the indoor unit information and outdoor unit current system information. Note: Data renewal time is in approximately 20 seconds intervals. Connect_quantity Number of connected terminals Thermostat_ON_quantity Number of indoor thermostats that are ON Thermostat_ON_volume (real) Total capacity (current) of indoor thermostats that are ON MaxR3T...
Page 306 Troubleshooting SiBE811001EB <Mode 3> On-screen verification of DIP switch and soft switch settings are possible. ∗1) Error code displays on the outdoor unit ram monitor <Outdoor unit> Ram monitor Ram monitor Ram monitor Error Code Error code Error Code display display display CONVENI-PACK...
Page 307 SiBE811001EB Troubleshooting ∗2) Malfunction code subdivided display on the outdoor unit ram monitor Subdivision code Error code Definitions Insufficient Discharge gas INV. STD1 STD2 refrigerant Subdivision code Error code Definitions STD2 STD, OC STD1_Sc STD2 STD2_Sc — STD overcurrent operation crack overcurrent crack...
Page 308: Troubleshooting By Ram Monitor (Booster Unit)
Troubleshooting SiBE811001EB Troubleshooting by RAM Monitor (Booster Unit) Using the RAM monitor makes it possible to check the following operating data. <Mode 1> SP_No. SP number Ver. Version of software [Main] operation_SW Operating switch ON/OFF (OFF/ON: 0/1) thermostat_SW Refrigerating thermostat input (AC input) ON/OFF (OFF/ON: 0/1) [Mode] Mode ON/OFF: 1/0...
Page 309 SiBE811001EB Troubleshooting [Protection Device] HPS actuation S1PH Actuation of the HPS (Actuation:1) [Actuator] 52ci INV_52C compressor (ON/OFF: 0/1) driving_[X26A] Refrigeration solenoid valve signal ON/OFF (1/0) Mulfunction_[X25A] Abnormal signal ON/OFF (1/0) INV_FAN_[X28A] INV cooling fan ON/OFF (1/0) Y1E opening degree (0 to 480 Pls) Y2E opening degree (0 to 480 Pls) Target discharge pipe temperature Frequency table values (frequency is determined from these values.)
Page 310 Troubleshooting SiBE811001EB <Mode 2> Confirming the soft switch settings on the screen. ∗1) Error code displays on the booster unit ram monitor (the outdoor unit ram monitor) <Booster unit> Ram monitor Ram monitor Error code Error code display display CONVENI-PACK...
Page 311 SiBE811001EB Troubleshooting Repairing errors 1. Steps to remove refrigerant system components If the refrigerant system components are found to be malfunctioning, remove and replace the components using the following refrigerant recovery procedure as reference. Error location Maintenance procedure • Compressor (M1C, M2C, M3C) Refer to maintenance 1 •...
Page 312: Maintenance
Troubleshooting SiBE811001EB Maintenance 1) Maintenance 1: Maintenance surrounding the outdoor unit • Compressor (M1C, M2C, M3C) • Y3E, Y4E, Y5E Subject components • Four way valve A, B, C • High pressure switch (HPS 1 to 3), low pressure switch (LPS1) Continuous operation is not possible Caution: If C1 or C2 is shut, the onsite liquid...
Page 313 SiBE811001EB Troubleshooting 2) Maintenance 2: Maintenance around the receiver Subject components • Y1E, 2 and SV0, 1 Continuous operation is not possible A: Discharge line maintenance valve B: Injection line maintenance valve C1: Refrigeration-side liquid stop valve C2: Air conditioning side liquid stop valve D: Refrigeration-side gas stop valve E: Air conditioning side gas stop valve a, b, c: Service ports 1.
Page 314 Troubleshooting SiBE811001EB 3) Maintenance 3: Maintenance of freezer showcase and booster unit • Booster compressor (M1C); booster Y1E, Y2E; booster HPS; refrigeration Subject components showcase solenoid valves; refrigeration showcase electronic expansion valves Continuous operation is possible in refrigerator/air-conditioner Gas heat pump indoor unit Refrigerator 5˚C Refrigerator 5˚C Onsite supply...
Page 315 SiBE811001EB Troubleshooting 4) Maintenance 4: Maintenance of refrigeration showcase • Refrigeration showcase solenoid valve, refrigeration showcase electronic Subject components expansion valve Continuous operation possible in air-conditioner Gas heat pump indoor unit Refrigerator 5˚C Refrigerator 5˚C Onsite supply Freezer -30˚C C1: Refrigeration-side liquid stop valve D: Refrigeration-side gas stop valve F: Booster discharge maintenance valve G: Booster liquid inlet maintenance valve H: Dryer outlet maintenance valve (onsite supply) 1.
Page 316 Troubleshooting SiBE811001EB 5) Maintenance 5: Maintenance of indoor air conditioning Subject components • Indoor air-conditioning expansion valves Continuous operation possible in refrigeration Gas heat pump indoor unit Refrigerator 5˚C Refrigerator 5˚C Onsite supply Freezer -30˚C C2: Air conditioning side liquid stop valve E: Air conditioning side gas stop valve 1.
Page 317 SiBE811001EB Troubleshooting 6) Maintenance 6: Replacement of outdoor unit Subject components • Outdoor unit replacement Continuous operation not possible Gas heat pump indoor unit Refrigerator 5˚C Refrigerator 5˚C Onsite supply Freezer -30˚C All stop valves open 1. Turn the outdoor unit operation switch OFF. Turn the outdoor unit power OFF, the booster unit operation switch OFF and the booster unit power OFF.
Page 318 Troubleshooting SiBE811001EB 7) Maintenance 7: Dryer maintenance Subject components • Dryer Continuous operation possible in air-conditioner Gas heat pump indoor unit Refrigerator 5˚C Refrigerator 5˚C Onsite supply Freezer -30˚C C1: Refrigeration-side liquid stop valve H: Dryer outlet maintenance valve (onsite supply) 1.
Page 319: Basic Control
SiBE811001EB Troubleshooting 9. Basic Control Mounting of Feeler Bulb 9.1.1 Functions of Thermostatic Expansion Valve 1. Functions of thermostatic expansion valve The feeler bulb and the upper part of diaphragm on the main unit of expansion valve is connected and The thermostatic expansion valve reduces the sealed with the capillary tube.
Page 320: Errors Due To Faulty Connections
Troubleshooting SiBE811001EB 9.1.2 Errors due to Faulty Connections 1. Errors, which will occur if no external equalizer pipe is connected The pressure P , which is described under "Operation principle" section, becomes zero. ··· The electronic expansion valve remains open. Since the valve remains fully open, the liquid refrigerant excessively enters the evaporator.
Page 321: Proper Method Of Mounting Feeler Bulb
SiBE811001EB Troubleshooting 9.1.3 Proper Method of Mounting Feeler Bulb 1. Feeler bulb mounting position to the circumferential direction of suction pipe An approximate reference position is indicated by the segment of pipe diameters as a position in which the feeler bulb senses proper temperatures of the refrigerant vapor without having influence of the flow of refrigerant and refrigerant oil in the suction pipe.
Page 322 Troubleshooting SiBE811001EB If the liquid trap is provided before the piping rises, the liquid refrigerant and refrigerant oil will dwell in this trap, thus enabling the feeler bulb to operate without having influence of the liquid. Feeler Thermostatic bulb expansion valve The position is Liquid trap...
Page 323 SiBE811001EB Troubleshooting 3. With 2 or more thermostatic expansions valves mounted Main External equalizer pipe suction pipe Feeler bulb This mounting method is taken in order to prevent, refrigerant gas from a Distributor Evaporator single evaporator, from Make this distance having influence on the as short as possible other feeler expansion...
Page 324: Methods Of Fixing, Insulating And Antisweat Covering Of Feeler Bulb
Troubleshooting SiBE811001EB 9.1.4 Methods of Fixing, Insulating, and Antisweat Covering of Feeler Bulb In order to sense the proper temperature of the suction pipe, securely fix the feeler bulb so as not to receive influence from external wind, water, or else. 1.
Page 325: Type And Principle Of Electronic Expansion Valve
SiBE811001EB Troubleshooting 9.1.5 Type and Principle of Electronic Expansion Valve 1. Difference between external equalizer and internal equalizer types This difference is equal to that between saturation temperature and feeler bulb temperature equivalent to the expansion valve outlet pressure on the internal equalizer type or to the evaporator outlet pressure (at external equalizer connection) on the external equalizer type.
Page 326 Troubleshooting SiBE811001EB 3. When the evaporator has a significant pressure drop: If the internal-equalizer-type expansion valve with superheated degree set to 5°C is used, what the superheated degree at the outlet of the evaporator will be? Pressure of feeler bulb (P ) = 0.49MPa If the pressure at Point C drops to 0.32MPa, the...
Page 327: Mounting Position Of Expansion Valve
SiBE811001EB Troubleshooting 9.1.6 Mounting Position of Expansion Valve Mounting position of thermostatic expansion valve Normally, mount this valve in a vertical position with the diaphragm part placed UP. Should for any reason the valve be mounted in a horizontal position, mount it with the external equalizer pipe joint placed DOWN.
Page 328: Precautions For Electronic Expansion Valve Selection
Troubleshooting SiBE811001EB Precautions for Electronic Expansion Valve Selection This model has a larger degree of subcooling (subcooling ratio = condensing temperature - liquid refrigerant temperature) for the liquid refrigerant of a refrigerator than that of refrigerators without a subcooling mechanism as it cools the liquid refrigerant with a plate type heat exchanger.
Page 329 SiBE811001EB Troubleshooting Note of several booster units connection <Precaution for field wiring in case 2 booster units are operated with 1 relay for freezing operation command> (Thermo. signal) Booster unit The prefab for freezing T1 T2 Cooling unit From a refrigeration showcase Freezing operation command relay (Thermo.
Page 330 Troubleshooting SiBE811001EB [About the constraints at the time of 2 or more booster units connection] O The pattern which can 2 or more set connect a booster units is shown below. <Pattern 1> Suction pipe temp. less than 20 ˚C -Please connect the connection with main Suction pipe temp.
Page 331 SiBE811001EB Troubleshooting <Action when indoor unit's power is OFF> [Indoor unit's power is OFF with outdoor unit's power ON] As long as the outdoor unit's power is not turned OFF, the refrigerator will continue to work even when turning the air- conditioner's power ON/OFF, and the air-conditioner will stop.
Page 332: References
Troubleshooting SiBE811001EB References 9.3.1 Comparison with Conventional Model New model (A type) Conventional model (D type) Refrigerant R-410A R-407C Refrigerating (kW) 21.8 16.5 Capacity at (50/60 Hz) refrigeration Freezing (kW) 3.35 1.10 Installation area of outdoor unit (m²) 0.94 0.96 Outdoor: 330, Main Mass (kg)
Page 333: Comparison Of Controls With Conventional Model
SiBE811001EB Troubleshooting 9.3.2 Comparison of Controls with Conventional Model Item New model Conventional model Default: -10°C Default: -10°C Target evaporating temperature (DIP SW + Button SW) (Change by DIP SW) -20°C to +10°C -17°C to +3°C Assignment with absolute opening Freezing protection Assignment with absolute opening + target SH...
Page 334 Revision History Month / Year Version Revised contents 04/2010 SiBE811001 – 09/2012 SiBE811001_A Addition of functional improvement 11/2013 SiBE811001EB Correction from sales division and modification of details.
Page 335 Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion. Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or contractor to install those parts and accessories. Use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.

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Daikin LRYEQ16AY1 Service Manual

1 Introduction

2 System Configuration

3 Standard Specification

4 Description of Functions and Operation

5 Test Operation

6 Outline of Functions (Outdoor Unit)

7 Field Setting

8 Troubleshooting

9 Basic Control

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