Page 1 SiBE341001 DRAFT RQYQ140 · 180PY1, RQCYQ280~540PY1 R-410A Heat Pump 50Hz RQCEQ280~848PY1 R-410A Heat Recovery 50Hz...
Page 2: Table Of Contents
SiBE341001 R-410A Heat Pump / Heat Recovery 50Hz 1. Introduction .................... iv 1.1 Safety Cautions ..................iv 1.2 PREFACE ..................... viii Part 1 General Information ............1 1. Model Names of Indoor / Outdoor Units..........2 2. External Appearance................3 2.1 Outdoor Units ...................3 3.
Page 3 SiBE341001 1.2 Check Operation ..................65 1.3 Checking in Normal Operation ...............68 2. Field Setting from Outdoor Unit.............69 2.1 Field Setting from Outdoor Unit..............69 Part 6 Troubleshooting ............... 92 1. Symptom-based Troubleshooting ............94 2. Troubleshooting by Remote Controller ..........97 2.1 The INSPECTION / TEST Button............97 2.2 Self-diagnosis by Wired Remote Controller ...........98 2.3 Remote Controller Service Mode ............99 2.4 Test Run Mode..................102...
Page 4 SiBE341001 2.35 “ U8 ” Indoor Unit: Malfunction of Transmission between Main and Sub Remote Controllers ..............172 2.36 “ U9 ” Indoor Unit: Malfunction of Transmission between Indoor and Outdoor Units in the Same System ..........173 2.37 “ UA ” Improper Combination of Indoor, BS and Outdoor Units, Indoor Units and Remote Controller.............174 2.38 “...
Page 5: Introduction
SiBE341001 Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 6 Introduction SiBE341001 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
Page 7 SiBE341001 Introduction Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire.
Page 8 Introduction SiBE341001 Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.
Page 9: Preface
This is the new service manual for Daikin's Year 2010 VRVIII-Q series Heat Pump System. Daikin offers a wide range of models to respond to building and office air conditioning needs. We are confident that customers will be able to find the models that best suit their needs.
Page 10: Part 1 General Information
SiBE341001 Part 1 General Information 1. Model Names of Indoor / Outdoor Units..........2 2. External Appearance................3 2.1 Outdoor Units ...................3 3. Combination of Outdoor Units..............4 4. Model Selection..................5 General Information...
Page 11: Model Names Of Indoor / Outdoor Units
SiBE341001 Model Names of Indoor / Outdoor Units 1. Model Names of Indoor / Outdoor Units Outdoor Unit Series Model Name Power Supply Heat Pump RQYQ 140P 180P Heat Recovery RQEQ 140P 180P 212P BS Unit Type Model Name Power Supply BSVQ 100P 160P...
Page 12: External Appearance
External Appearance SiBE341001 2. External Appearance Outdoor Units RQYQ140, 180PY1 RQCYQ280, 360PY1 RQEQ140, 180, 212PY1 RQCEQ280, 360PY1 5, 6.5, 7.5 HP 10, 13 HP RQCYQ460, 500, 540PY1 RQCEQ712, 744, 816, 848PY1 RQCEQ460, 500, 540, 636PY1 16, 18, 20, 22 HP 24, 26, 28, 30 HP General Information...
Page 13: Combination Of Outdoor Units
SiBE341001 Combination of Outdoor Units 3. Combination of Outdoor Units Heat Pump Series System Number of Outdoor Unit Multi RQYQ140PY1 RQYQ180PY1 Connection Piping Kit (Option) Capacity Units ● — ● 6.5HP ●● 10HP BHFP22P36C ●● 13HP ●● ● 16HP ● ●●...
Page 14: Model Selection
Model Selection SiBE341001 4. Model Selection VRV III Heat Recovery Series Connectable indoor units number and capacity Heat Pump Series 6.5HP 10HP 13HP 16HP 18HP 20HP System name RQYQ140PY1 RQYQ180PY1 RQCYQ280PY1 RQCYQ360PY1 RQCYQ460PY1 RQCYQ500PY1 RQCYQ540PY1 Outdoor unit 1 RQYQ140PY1 RQYQ180PY1 RQYQ140PY1 RQYQ180PY1 RQYQ140PY1 RQYQ140PY1 RQYQ180PY1 Outdoor unit 2 –...
Page 15: Part 2 Specifications
SiBE341001 Part 2 Specifications 1. Specifications ..................7 1.1 Outdoor Units ...................7 1.2 BS Units ....................16 Specifications...
Page 16: Specifications
Specifications SiBE341001 1. Specifications Outdoor Units Heat Pump Series <RQ(C)YQ-P> Model Name RQYQ140PY1 RQYQ180PY1 kcal / h 12,000 15,500 ★ 1 Cooling Capacity Btu / h 47,800 61,400 14.0 18.0 kcal / h 13,800 17,200 ★ 2 Heating Capacity Btu / h 54,600 68,200 16.0...
Page 17 SiBE341001 Specifications Model Name (Combination Unit) RQCYQ280PY1 RQCYQ360PY1 Model Name (Independent Unit) RQYQ140PY1+RQYQ140PY1 RQYQ180PY1+RQYQ180PY1 kcal / h 24,000 31,000 ★ 1 Cooling Capacity Btu / h 95,600 122,800 28.0 36.0 kcal / h 27,600 34,400 ★ 2 Heating Capacity Btu / h 109,200 136,400 32.0...
Page 18 Specifications SiBE341001 Model Name (Combination Unit) RQCYQ460PY1 RQCYQ500PY1 Model Name (Independent Unit) RQYQ180PY1+RQYQ140PY1+RQYQ140PY1 RQYQ180PY1+RQYQ180PY1+RQYQ140PY1 kcal / h 39,600 43,000 ★ 1 Cooling Capacity Btu / h 157,000 170,600 46.0 50.0 kcal / h 44,700 48,200 ★ 2 Heating Capacity Btu / h 177,400 191,100 52.0...
Page 19 SiBE341001 Specifications Model Name (Combination Unit) RQCYQ540PY1 Model Name (Independent Unit) RQYQ180PY1+RQYQ180PY1+RQYQ180PY1 kcal / h 46,400 ★ 1 Cooling Capacity Btu / h 184,200 54.0 kcal / h 51,600 ★ 2 Heating Capacity Btu / h 204,700 60.0 Casing Color Ivory White 5Y7.5/1 Dimensions: (H×W×D) 1680×635×765+1680×635×765+1680×635×765...
Page 20 Specifications SiBE341001 Heat Recovery Series <RQCEQ-P> Model Name (Combination Unit) RQCEQ280PY1 RQCEQ360PY1 Model Name (Independent Unit) RQEQ140PY1+RQEQ140PY1 RQEQ180PY1+RQEQ180PY1 kcal / h 24,000 31,000 ★ 1 Cooling Capacity Btu / h 95,600 122,800 28.0 36.0 kcal / h 27,600 34,400 ★ 2 Heating Capacity Btu / h 109,200...
Page 21 SiBE341001 Specifications Model Name (Combination Unit) RQCEQ460PY1 RQCEQ500PY1 Model Name (Independent Unit) RQEQ180PY1+RQEQ140PY1+RQEQ140PY1 RQEQ180PY1+RQEQ180PY1+RQEQ140PY1 kcal / h 38,700 43,000 ★ 1 Cooling Capacity Btu / h 153,500 170,600 45.0 50.0 kcal / h 44,700 48,200 ★ 2 Heating Capacity Btu / h 177,400 191,100 52.0...
Page 22 Specifications SiBE341001 Model Name (Combination Unit) RQCEQ540PY1 RQCEQ636PY1 Model Name (Independent Unit) RQEQ180PY1+RQEQ180PY1+RQEQ180PY1 RQEQ212PY1+RQEQ212PY1+RQEQ212PY1 kcal / h 46,400 54,700 ★ 1 Cooling Capacity Btu / h 184,200 217,000 54.0 63.6 kcal / h 51,600 57,800 ★ 2 Heating Capacity Btu / h 204,700 229,300 60.0...
Page 23 SiBE341001 Specifications Model Name (Combination Unit) RQCEQ712PY1 RQCEQ744PY1 Model Name (Independent Unit) RQEQ212PY1+RQEQ180PY1+RQEQ180PY1+RQEQ140PY1 RQEQ212PY1+RQEQ212PY1+RQEQ180PY1+RQEQ140PY1 kcal / h 61,200 64,000 ★ 1 Cooling Capacity Btu / h 242,900 253,900 71.2 74.4 kcal / h 67,400 69,500 ★ 2 Heating Capacity Btu / h 267,500 275,700 78.4...
Page 24 Specifications SiBE341001 Model Name (Combination Unit) RQCEQ816PY1 RQCEQ848PY1 Model Name (Independent Unit) RQEQ212PY1+RQEQ212PY1+RQEQ212PY1+RQEQ180PY1 RQEQ212PY1+RQEQ212PY1+RQEQ212PY1+RQEQ212PY1 kcal / h 70,200 72,900 ★ 1 Cooling Capacity Btu / h 278,400 289,300 81.6 84.8 kcal / h 75,000 77,100 ★ 2 Heating Capacity Btu / h 297.600 305,700 87.2...
Page 25: Bs Units
SiBE341001 Specifications BS Units Model BSVQ100PV1 BSVQ160PV1 BSVQ250PV1 Power Supply 1 Phase 50Hz 220 ~ 240V 1 Phase 50Hz 220 ~ 240V 1 Phase 50Hz 220 ~ 240V Casing Galvanized steel plate Galvanized steel plate Galvanized steel plate Dimensions: (H×W×D) 207×388×326 207×388×326 207×388×326...
Page 26 Specifications SiBE341001 Connection Range for BS Unit Total capacity of connectable indoor Number of connectable indoor Components Outdoor unit model name units units RQCEQ280PY1 14.0 to 36.4 (56.0) RQCEQ360PY1 18.0 to 46.2 (72.0) RQCEQ460PY1 23.0 to 59.8 (92.0) RQCEQ500PY1 25.0 to 65.0 (100.0) RQCEQ540PY1 27.0 to 70.2 (108.0) Indoor unit total capacity...
Page 27: Part 3 Refrigerant Circuit
SiBE341001 Part 3 Refrigerant Circuit 1. Refrigerant Circuit .................19 1.1 RQYQ140 · 180PY1, RQEQ140 ~ 212PY1 ...........19 1.2 BS Unit ....................21 2. Functional Parts Layout ................23 2.1 RQYQ140 · 180PY1, RQEQ140 ~ 212PY1..........23 3. Refrigerant Flow for Each Operation Mode...........24 3.1 RQYQ140 ·...
Page 28: Refrigerant Circuit
Refrigerant Circuit SiBE341001 1. Refrigerant Circuit RQYQ140 · 180PY1, RQEQ140 ~ 212PY1 No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies 52Hz to 210Hz (180 class: 248Hz, 212 Inverter compressor (INV.) class: 266Hz) by using the inverter. The number of operating steps is 20. (180 class: 23 steps, 212 class: 27 steps) Because the system is an air heat exchange type, the fan is operated 8-step rotation Inverter fan...
Page 29 SiBE341001 Refrigerant Circuit 3D066010A Refrigerant Circuit...
Page 30: Bs Unit
Refrigerant Circuit SiBE341001 BS Unit Name Symbol Function Electronic expansion valve (EVSC) In simultaneous cooling and heating operation, it is used to subcooling liquid refrigerants when an indoor unit downstream of this BS unit is in heating operation. Electronic expansion valve (EVHS) Opens while in heating operation or all indoor units are in cooling operation.
Page 31 SiBE341001 Refrigerant Circuit • BSV4Q100PV1 3D064148 • BSV6Q100PV1 3D064149 Refrigerant Circuit...
Page 32: Functional Parts Layout
Functional Parts Layout SiBE341001 2. Functional Parts Layout RQYQ140 · 180PY1, RQEQ140 ~ 212PY1 Plan Solenoid valve (Refrigerant regulator liquid pipe) (Y2S) Solenoid valve (Refrigerant regulator hot gas) (Y1S) Electronic expansion valve (Refrigerant charge) (Y2E) Electronic expansion valve Solenoid valve (Refrigerant (Subcooling) regulator gas vent pipe) (Y3E)
Page 33: Refrigerant Flow For Each Operation Mode
SiBE341001 Refrigerant Flow for Each Operation Mode 3. Refrigerant Flow for Each Operation Mode RQYQ140 · 180PY1 Cooling operation "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Indoor unit operation "ON" (Cooling) Indoor unit operation "OFF" (Cooling) Indoor unit operation "ON"...
Page 34: Refrigerant Circuit
Refrigerant Flow for Each Operation Mode SiBE341001 Cooling oil return / Heating oil return / Defrost operation "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Indoor unit operation "ON" (Cooling) Indoor unit operation "OFF" (Cooling) Indoor unit operation "ON"...
Page 35: Heating Operation
SiBE341001 Refrigerant Flow for Each Operation Mode Heating operation "High temperature, high pressure gas" "High temperature, high pressure liquid" "Low temperature, low pressure" Indoor unit operation "ON" (Heating) Indoor unit operation "OFF" (Heating) Indoor unit operation "ON" (Heating) Thermostat "ON" Thermostat "OFF"...
Page 36: Rqceq280 ~ 848Py1
Refrigerant Flow for Each Operation Mode SiBE341001 RQCEQ280 ~ 848PY1 Cooling operation Indoor unit operation "ON" (Cooling) Indoor unit operation "ON" (Cooling) Indoor unit operation "OFF" (Cooling) "High temperature, Thermostat "ON" Thermostat "OFF" high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
Page 37: Cooling Oil Return Operation
SiBE341001 Refrigerant Flow for Each Operation Mode Cooling oil return operation Indoor unit operation "ON" (Cooling) Indoor unit operation "ON" (Cooling) Indoor unit operation "OFF" (Cooling) "High temperature, Thermostat "ON" Thermostat "OFF" high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
Page 38 Refrigerant Flow for Each Operation Mode SiBE341001 Heating operation Indoor unit operation "ON" (Heating) Indoor unit operation "ON" (Heating) Indoor unit operation "OFF" (Heating) "High temperature, Thermostat "ON" Thermostat "OFF" high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
Page 39 SiBE341001 Refrigerant Flow for Each Operation Mode Heating oil return operation Indoor unit operation "ON" (Heating) Indoor unit operation "ON" (Heating) Indoor unit operation "OFF" (Heating) "High temperature, Thermostat "ON" Thermostat "OFF" high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
Page 40 Refrigerant Flow for Each Operation Mode SiBE341001 Defrost 1 operation Indoor unit operation "ON" (Heating) Indoor unit operation "ON" (Heating) Indoor unit operation "ON" (Cooling) "High temperature, Thermostat "ON" Thermostat "OFF" high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
Page 41 SiBE341001 Refrigerant Flow for Each Operation Mode Defrost 2 operation Indoor unit operation "ON" (Heating) Indoor unit operation "ON" (Heating) Indoor unit operation "ON" (Cooling) "High temperature, Thermostat "ON" Thermostat "OFF" high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature, high pressure liquid"...
Page 42 Refrigerant Flow for Each Operation Mode SiBE341001 Simultaneous cooling / Heating operation Indoor unit operation "ON" (Cooling) Indoor unit operation "ON" (Heating) Indoor unit operation "ON" (Heating) "High temperature, Thermostat "ON" Thermostat "ON" Thermostat "ON" high pressure gas" Heat exchanger Heat exchanger Heat exchanger "High temperature,...
Page 43: Part 4 Function
SiBE341001 Part 4 Function 1. Function General...................35 1.1 Operation Mode..................35 1.2 Symbol ....................36 2. Detailed Control Functions..............37 2.1 Stop Operation ..................37 2.2 Standby ....................37 2.3 Rotation Control ..................37 2.4 Startup Control ..................38 2.5 Normal Operation ...................39 2.6 Protection Control...................47 2.7 Special Control ..................52 Function...
Page 44: Function General
Function General SiBE341001 1. Function General Operation Mode 2-1. Stop operation Thermostat ON Indoor unit (If test run has not been completed, the error code "U3" is displayed and the stop or unit will not operation. However this does not apply to test run operation in thermostat service mode, refrigerant charging operation, and pump-down operation.) 2.2.
Page 45: Symbol
SiBE341001 Function General Symbol Symbol Electric symbol Description of function 20SA Four way valve (Heat exchanger switch) Four way valve (Dual pressure gas pipe switch) 20SB Four way valve (Mixing unit) — Discharge pipe superheated degree DSHi — Discharge pipe superheated degree of INV. compressor DSHs —...
Page 46: Detailed Control Functions
Detailed Control Functions SiBE341001 2. Detailed Control Functions Stop Operation 2.1.1 Stop due to Malfunction In order to protect compressors, if any of the abnormal state occurs, the system will make "stop with thermostat OFF" and the malfunction will be determined according to the number of retry times. (Refer to "Malfunction code list"...
Page 47: Startup Control
SiBE341001 Detailed Control Functions Startup Control This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor. To avoid stresses to the compressor due to oil return or else after the startup, the following control is made and the position of the four way valve is also determined.
Page 48: Normal Operation
Detailed Control Functions SiBE341001 Normal Operation 2.5.1 List of Functions in Normal Operation <Outdoor Unit> Electric Normal Simultaneous Part Name Normal Cooling Normal Heating Symbol Cooling / Heating PI control, High pressure PI control, High pressure PI control, High pressure protection, Low pressure protection, Low pressure protection, Low pressure...
Page 49: Compressor Pi Control
SiBE341001 Detailed Control Functions 2.5.2 Compressor PI Control Carries out the compressor capacity PI control to maintain Te at constant during cooling operation and Tc at constant during heating operation to ensure stable unit performance. [Cooling operation] Controls compressor capacity to adjust Te to achieve target value (TeS). Te set value (Make this setting while in Setting mode 2.) Te setting M (Normal)
Page 50 Detailed Control Functions SiBE341001 2.5.3 Compressor Step Control Compressor operations vary with the following steps according to information in “2.5.2 Compressor PI Control”. RQYQ140 · 180PY1 RQCYQ280 · 360PY1 STEP RQCEQ280 · 360PY1 INV. STEP Master Slave 52Hz Initial step INV.
Page 51 SiBE341001 Detailed Control Functions RQCYQ460 ~ 540PY1 RQCEQ460 ~ 636PY1 STEP Master Slave 1 Slave 2 INV. INV. INV. 52Hz OFF OFF 56Hz OFF OFF 62Hz OFF OFF 68Hz OFF OFF 74Hz OFF OFF 80Hz OFF OFF 88Hz OFF OFF 96Hz OFF OFF 104Hz OFF OFF 52Hz 52Hz OFF...
Page 52 Detailed Control Functions SiBE341001 RQCEQ712 ~ 848PY1 STEP Master Slave 1 Slave 2 Slave 3 INV. INV. INV. INV. 52Hz OFF OFF OFF 56Hz OFF OFF OFF 62Hz OFF OFF OFF 68Hz OFF OFF OFF 74Hz OFF OFF OFF 80Hz OFF OFF OFF 88Hz OFF OFF OFF 96Hz OFF OFF OFF 104Hz OFF OFF OFF...
Page 53: Electronic Expansion Valve Pi Control
SiBE341001 Detailed Control Functions 2.5.4 Electronic Expansion Valve PI Control Main electronic expansion valve EVM control When the outdoor unit heat exchanging is performed via the evaporator (20SA is set to ON), this function is used to exert PI control on the electronic expansion valve (Y1E) so that the evaporator outlet superheated degree (SH) will become constant.
Page 54 Detailed Control Functions SiBE341001 2.5.6 Heat Exchanger Control While in heating or cool/heat simultaneous operation, ensure target condensing and evaporating temperature by changing over the air heat exchanger of outdoor unit to the evaporator or the condenser in response to loads. [Single system] Outdoor unit Outdoor unit...
Page 55 SiBE341001 Detailed Control Functions 2.5.7 Control of Refrigerant Amount <Recovery of refrigerant> Open the solenoid valve (Y2S, Y3S) when the load of the indoor unit is low and return the surplus refrigerant to the refrigerant regulator. <Discharge of refrigerant> Open the solenoid valve (Y1S) and the electronic expansion valve (Y2E) when the load of the indoor unit is high and discharge the refrigerant from the refrigerant regulator.
Page 56: Protection Control
Detailed Control Functions SiBE341001 Protection Control 2.6.1 High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure. [In cooling operation] ★...
Page 57: Low Pressure Protection Control
SiBE341001 Detailed Control Functions 2.6.2 Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] ★ Because of common low pressure, the following control is performed in the system. Pe_min indicates the minimum value within the system.
Page 58 Detailed Control Functions SiBE341001 [In heating operation and Simultaneous Cooling / Heating Operation] ★ The following control is performed in the system. Pe_min indicates the minimum value within the system. Normal Operation • Pe_min>0.23MPa Pe_min & • Upper limit compressor step=max (Max. step) <...
Page 59: Discharge Pipe Protection Control
SiBE341001 Detailed Control Functions 2.6.3 Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature. The following control is performed for each compressor. [INV compressor] Normal operation HTdi >...
Page 60: Inverter Protection Control
Detailed Control Functions SiBE341001 2.6.4 Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. ★ In the case of multi-outdoor-unit system, each INV compressor performs these controls in the following sequence. [Inverter overcurrent protection control] ★...
Page 61: Special Control
SiBE341001 Detailed Control Functions Special Control 2.7.1 Pump-down Residual Operation If the liquid refrigerant stays in the evaporator at the startup of a compressor, this liquid refrigerant enters the compressor, thus resulting in diluted oil in the compressor and then degraded lubrication performance. Consequently, in order to recover the refrigerant in the evaporator while the compressor stops, the pump-down residual operation is conducted.
Page 62 Detailed Control Functions SiBE341001 2.7.2 Cooling Oil Return Operation In order to prevent the compressor from running out of oil, the oil return operation is conducted to recover oil flown out from the compressor to the system side. [Start conditions] Referring to the set conditions for the following items, start the oil return operation in cooling.
Page 63 SiBE341001 Detailed Control Functions 2.7.3 Heating Oil Return Operation and Defrost Operation • RQYQ140 · 180PY1, RQCYQ280 ~ 560PY1 [Heating Oil Return Operation] Referring to the set conditions for the following items, start the oil return operation in heating. • 2 hours after initial power ON •...
Page 64 Detailed Control Functions SiBE341001 • RQCEQ280 ~ 848PY1 "Reverse cycle defrosting (heating oil return)" and "Partial defrosting" are available depending on the combination of the starting condition for units of this series. Normal heating operation "Condition "Condition to start heating oil to start defrosting"...
Page 65 SiBE341001 Detailed Control Functions 2.7.4 Outdoor Unit Rotation In the case of multi-outdoor-unit system, this outdoor unit rotation is used to prevent the compressor from burning out due to unbalanced oil level between outdoor units. [Details of outdoor unit rotation] In the case of multi-outdoor-unit system, each outdoor unit is given an operating priority for the control.
Page 66 Detailed Control Functions SiBE341001 2.7.5 Cooling/heating mode changeover [Single room cooling under mixed cooling and heating conditions → heating] First, close all of the indoor unit electronic expansion valve and BS unit electronic expansion valves Y2E, Y3E, Y4E and Y5E under the cooling operation condition. Next, open the electronic expansion valve Y2E and perform an equalizing operation.
Page 67 SiBE341001 Detailed Control Functions [Single room heating under mixed cooling and heating conditions → cooling] First, close all of the indoor unit electronic expansion and BS unit electronic expansion valves Y2E, Y3E, Y4E and Y5E under the heating operation condition. Next, open the electronic expansion valve Y3E and perform an equalizing operation.
Page 68 Detailed Control Functions SiBE341001 [All-room cooling → all-room heating or simultaneous cooling and heating] HP/LP gas pipe (1) While all indoor units are in cooling Suction gas pipe operation • HP/LP gas pipe is used as a suction gas Liquid pipe.
Page 69: Emergency Operation
SiBE341001 Detailed Control Functions 2.7.6 Emergency Operation Stop the compressor or the outdoor unit and bring only the operable compressor and outdoor unit into emergency operation. "Emergency operation by a remote controller" and "Emergency operation by outdoor unit PCB" are available for the operation.
Page 70: Part 5 Test Operation
SiBE341001 Part 5 Test Operation 1. Test Operation ..................62 1.1 Procedure and Outline ................62 1.2 Check Operation ..................65 1.3 Checking in Normal Operation ...............68 2. Field Setting from Outdoor Unit.............69 2.1 Field Setting from Outdoor Unit..............69 Test Operation...
Page 71: Test Operation
SiBE341001 Test Operation 1. Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.1.1 Check work prior to turn power supply on Check that the installation work for the indoor and outdoor units has been performed in accordance with the instructions in the Installation Manual.
Page 72 Test Operation SiBE341001 * How to calculate additional refrigerant charging amount (Unit: 0.1 kg) Total length of Total length of Total length of φ22.2-mm φ19.1-mm φ15.9-mm × 0.37 × 0.26 × 0.18 liquid pipe) liquid pipe) liquid pipe) Total length of Total length of Total length of φ9.5-mm...
Page 73 SiBE341001 Test Operation 1.1.2 Turn power on Be sure to turn the power on 6 hours before starting operation to protect Turn outdoor unit and indoor compressors. unit power on. Check to be sure the transmission is normal. Check the LED display of the The transmission is normal if the LEDs display conditions as shown in outdoor unit PCB.
Page 74: Check Operation
Test Operation SiBE341001 Check Operation 1.2.1 RQYQ / RQEQ-PY1 Operational Conditions (Each of mentioned below is a standard oper- Procedures ation time. This may vary based on the installation cir- cumstances, etc.) (1) Turn to [Set-up Mode 1] (H1P : OFF). Normal (H2P : OFF) H1P light is usually out.
Page 75 SiBE341001 Test Operation LED indications :OFF :BLINK Functions of push-button C/H SELECTOR indications on MODE HWL: L.N.O.P DEMAND remote MASTER SLAVE controller (*1) MODE RETURN TEST RESET Press to reset the address when changing the wiring, or indoor units are added.
Page 76 Test Operation SiBE341001 [Remote controller displays malfunction code] Malfunction Installation error Remedial action code Indoor unit of connecting remote controller is Correct the malfunction by reference to installation manual malfunction. of indoor unit or operation manual of outdoor unit. (Note) E3, F4 The shutoff valve of the outdoor unit is left closed.
Page 77: Checking In Normal Operation
SiBE341001 Test Operation Checking in Normal Operation After check operation ends, start normal operation. (Heating is not possible if the outdoor temperature is 24°C or higher.) • Check that the indoor and outdoor units are operating correctly. (If any abnormal noise occurs due to liquid compression in the compressor or another cause, stop operation immediately.
Page 78: Field Setting From Outdoor Unit
Field Setting from Outdoor Unit SiBE341001 2. Field Setting from Outdoor Unit Field Setting from Outdoor Unit 2.1.1 List of Field Setting Items This following section indicates the list of field setting items. For the lists of dip switch contents, Setting mode 1, and Setting mode 2, refer to information in tables shown on the following page onward.
Page 79 SiBE341001 Field Setting from Outdoor Unit (2) Service setting items Setting item Content and objective of setting Overview of setting procedure Indoor unit fan Used to operate the indoor unit in the Set No. 5 of "Setting mode 2" to indoor unit forced H operation stopped state in forced H operation mode.
Page 80 Field Setting from Outdoor Unit SiBE341001 Setting by dip switches Using dip switches on the PCB enables field setting shown below. However, make no changes of factory settings except for DS1-1. Dipswitch Setting item Description Setting Cool / Heat select Used to set cool / heat select by Cool/Heat selector DS1-1 equipped with outdoor unit.
Page 81 SiBE341001 Field Setting from Outdoor Unit Setting by push button switches The following settings are made by push button switches on PCB. In case of multi-outdoor unit system, various items should be set with the master unit. (Setting with the slave unit is disabled.) LED display COOL/HEAT select Demand...
Page 82 Field Setting from Outdoor Unit SiBE341001 a. “Setting mode 1” This mode is used to set and check the following items. 1. Set items ············ In order to make COOL/HEAT selection in a batch of outdoor unit group, change the setting. •...
Page 83 SiBE341001 Field Setting from Outdoor Unit Setting item Description b. “Setting mode 2” Used to make setting of contents to display on the digital Digital pressure pressure gauges (e.g. pressure sensors and temperature gauge kit display sensors) Push and hold the MODE (BS1) button for 5 seconds and set to Cool/heat unified Sets address for cool/heat unified operation.
Page 84 Field Setting from Outdoor Unit SiBE341001 Setting item Description Setting of difference Make the setting when the outdoor unit is installed 40 m in elevation for the or more below the indoor unit. outdoor unit Emergency operation (Setting for the master unit operation prohibition in multi-...
Page 85 SiBE341001 Field Setting from Outdoor Unit Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set k h h h h h h ∗ Address k h h h h h k Binary number Digital pressure gauge kit display...
Page 86 Field Setting from Outdoor Unit SiBE341001 Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set k h h h h h k About 20:00 Night-time low noise k h h h h k h ∗ operation start About 22:00 (factory setting) setting...
Page 87 SiBE341001 Field Setting from Outdoor Unit c. Monitor mode LED display Setting item Data display l h h h h h h To enter the monitor mode, push the Various settings Lower 4 digits MODE (BS1) button when in l h h h h h k “Setting mode 1”.
Page 88 Field Setting from Outdoor Unit SiBE341001 Setting item 0 Display contents of “Number of units for various settings” l h h k h h h EMG operation / backup operation l h h h h h h setting l h h h k h h Defrost select setting Short l h h h l h h...
Page 89 SiBE341001 Field Setting from Outdoor Unit 2.1.2 Cool / Heat Mode Switching There are the following 4 cool/heat switching modes. Set cool/heat separately for each outdoor unit system by indoor unit remote controller. Set cool/heat separately for each outdoor unit system by cool/heat selector. Set cool/heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote controller.
Page 90 Field Setting from Outdoor Unit SiBE341001 Set Cool / Heat Separately for Each Outdoor Unit System by Cool / Heat Selector It does not matter whether or not there is outdoor - outdoor unit wiring. Set outdoor unit PCB DS1-1 to OUT (factory set). Set cool/heat switching to IND (individual) for “Setting mode 1”...
Page 91 SiBE341001 Field Setting from Outdoor Unit Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified Master Outdoor Unit by Indoor Unit Remote Controller Install the external control adaptor for outdoor unit on either the outdoor-outdoor, indoor- outdoor transmission line.
Page 92 Field Setting from Outdoor Unit SiBE341001 Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified Master Outdoor Unit by Cool / Heat Selector Install the external control adaptor for outdoor unit on either the outdoor-outdoor, indoor- outdoor transmission line.
Page 93 SiBE341001 Field Setting from Outdoor Unit Supplementation on When switching cool/heat for each adaptor PCB with the use of more than one adaptor PCB, set the address of the external control adaptor for outdoor unit PCB DS1 and DS2 so that it matches the unified cool/heat address of outdoor unit main PCB.
Page 94 Field Setting from Outdoor Unit SiBE341001 Set cool/heat at all outdoor unit systems simultaneously for each outdoor unit external control adaptor by using the central remote controller. Install the outdoor unit external control adaptor (optional accessory) onto the outdoor- outdoor, indoor-outdoor, or indoor-indoor transmission line. Use "setting mode 1"...
Page 95 SiBE341001 Field Setting from Outdoor Unit 2.1.3 Cool/Heat Changeover Setting [For RQCEP Type] To use a cool/heat changeover remote controller Set the dip switch on the BS unit PCB (DS 1-1) according to the following before turning on the BS unit. Connect the cool/heat changeover remote controller to (A), (B) and (C) of the terminal strip X2M.
Page 96 Field Setting from Outdoor Unit SiBE341001 2.1.4 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adaptor (optional), you can lower operating noise by 2-3 dB. Setting Content Mode 1...
Page 97 SiBE341001 Field Setting from Outdoor Unit 2.1.5 Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adaptor (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition.
Page 98 Field Setting from Outdoor Unit SiBE341001 2.1.6 Air Tight Test Procedure After internal servicing is performed in the field, perform the air tight test. Fully open the electronic expansion valves of the outdoor unit and indoor unit, and turn on some of the solenoid valves.
Page 99 SiBE341001 Field Setting from Outdoor Unit 2.1.9 Emergency Operation If the compressor cannot operate, this control inhibits any applicable compressor or outdoor unit from operating to perform emergency operation only with the operative compressor or outdoor unit. [Automatic backup operation] With multi-outdoor-unit system, if a certain outdoor unit system malfunctions (i.e., the system stops and indoor unit remote controller displays the malfunction), by resetting the indoor unit remote controller, the applicable outdoor unit is inhibited from operating for 8 hours, thus...
Page 100 Field Setting from Outdoor Unit SiBE341001 • In order to set the slave unit 2 to operation prohibition mode, set No. 39 of Setting mode 2 to :OFF l:Blink) LED display (h:ON "SLAVE 2 OPERATION PROHIBITION". H1P----H7P (Procedure) hhhhhhh hhhhhh (1) Press and hold the MODE button (BS1) for a period of 5 seconds or more.
Page 101: Part 6 Troubleshooting
SiBE341001 Part 6 Troubleshooting 1. Symptom-based Troubleshooting ............94 2. Troubleshooting by Remote Controller ..........97 2.1 The INSPECTION / TEST Button............97 2.2 Self-diagnosis by Wired Remote Controller ...........98 2.3 Remote Controller Service Mode ............99 2.4 Test Run Mode..................102 2.5 Remote Controller Self-Diagnosis Function .........102 2.6 “...
Page 102 SiBE341001 2.35 “ U8 ” Indoor Unit: Malfunction of Transmission between Main and Sub Remote Controllers ..............172 2.36 “ U9 ” Indoor Unit: Malfunction of Transmission between Indoor and Outdoor Units in the Same System ..........173 2.37 “ UA ” Improper Combination of Indoor, BS and Outdoor Units, Indoor Units and Remote Controller.............174 2.38 “...
Page 103: Symptom-Based Troubleshooting
SiBE341001 Symptom-based Troubleshooting 1. 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 104 Symptom-based Troubleshooting SiBE341001 Symptom Supposed Cause Countermeasure The system This symptom occurs The system is in preparation Wait for a period of approximately conducts fan immediately after turning ON mode of operation. 10 minutes. operation but not the power supply. cooling or "UNDER CENTRALIZED Even though, the cooling or...
Page 105 SiBE341001 Symptom-based Troubleshooting 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 106: Troubleshooting By Remote Controller
Troubleshooting by Remote Controller SiBE341001 2. Troubleshooting by Remote Controller The INSPECTION / TEST Button The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. On power-up, the message "Connection under check. Please wait for a moment" will be displayed on the remote controller screen.
Page 107: Self-Diagnosis By Wired Remote Controller
SiBE341001 Troubleshooting by Remote Controller Self-diagnosis by Wired Remote Controller Explanation The following will be displayed on the screen when a malfunction (or a warning) occurs during operation. Check the malfunction code and take the corrective action specified for the particular model. Screen Operation lamp (1) Checking a malfunction or warning...
Page 108: Remote Controller Service Mode
Troubleshooting by Remote Controller SiBE341001 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 109 SiBE341001 Troubleshooting by Remote Controller Service Menu Item 2 Remarks 1. Model Name Display 1. Unit No. Select the Unit No. you want to check. 2. Indoor unit 3. Outdoor unit 2. Operating Hours 1. Unit No. Select the Unit No. you want to check. Display 2.
Page 110 Troubleshooting by Remote Controller SiBE341001 Service Menu Item 2 Remarks 6. Error Display 1. Warning display ON Displays a warning on the screen if an error Selection occurs. 2. Warning display OFF No warning is displayed. 3. Error display ON Displays the error on the screen.
Page 111: Test Run Mode
SiBE341001 Troubleshooting by Remote Controller Test Run Mode Operating the INSPECTION/TEST button on the remote controller will make it possible to put the system into test run mode. (1) Test run mode setting The test run mode setting can be made by conducting the following operation. Normal Test run operation...
Page 112 Troubleshooting by Remote Controller SiBE341001 (1) Checking a malfunction or warning Operation Status Display The operation lamp (green) starts to blink. The message Abnormal The system stops operating. "Malfunction: Press Menu shutdown button" will appear and blink at the bottom of the screen. The operation lamp (green) remains on.
Page 113 SiBE341001 Troubleshooting by Remote Controller k: ON h: OFF l: Blink Malfunction Operation Malfunction contents Page code lamp Referred Outdoor Unit PCB defect Actuation of high pressure switch Actuation of high pressure switch Actuation of low pressure sensor Inverter compressor motor lock Malfunction of outdoor unit fan motor Malfunction of moving part of electronic expansion valve (Y1E ~ Y5E) Abnormal discharge pipe temperature...
Page 114 Troubleshooting by Remote Controller SiBE341001 k: ON h: OFF l: Blink Malfunction Operation Malfunction contents Page code lamp Referred Heat Indoor unit’s air thermistor error — Reclaim Outside air thermistor error — Ventilation Damper system alarm — Damper system + thermistor error —...
Page 115 SiBE341001 Troubleshooting by Remote Controller Malfunction code indication by outdoor unit Malfunctions Malfunction code Description of malfunction Description of malfunction (PGF) Remote <Monitor mode> controller PCB malfunction PCB malfunction To enter the monitor mode, push the MODE (BS1) button when in “Setting Faulty PCB mode 1”.
Page 116 Troubleshooting by Remote Controller SiBE341001 k : ON h : OFF l :Blink Confirmation of malfunction 1 (Check 1) Confirmation of malfunction 2 (Check 2) Confirmation of malfunction 3 (Check 3) Confirmation of malfunction 4 (Check 4) Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗1 ∗1 ∗1...
Page 117 SiBE341001 Troubleshooting by Remote Controller <Monitor mode> Malfunctions Malfunction code To enter the monitor mode, push the Description of malfunction Description of malfunction (PGF) Remote MODE (BS1) button when in “Setting controller mode 1”. Open phase and unbalanced power Unbalanced INV power supply voltage supply INV radiation fin temperature sensor INV fin thermistor malfunction...
Page 118 Troubleshooting by Remote Controller SiBE341001 k : ON h : OFF l :Blink Confirmation of malfunction 1 (Check 1) Confirmation of malfunction 2 (Check 2) Confirmation of malfunction 3 (Check 3) Confirmation of malfunction 4 (Check 4) Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗1 ∗1 ∗1...
Page 119: E1 " Outdoor Unit: Pcb Defect
SiBE341001 Troubleshooting by Remote Controller “ ” Outdoor Unit: PCB Defect Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Abnormality is detected under the communication conditions in the hardware section between the indoor unit and outdoor unit. Malfunction Detection Malfunction When the communication conditions in the hardware section between the indoor unit and the outdoor unit are not normal.
Page 120: E2 " Outdoor Unit: Actuation Of High Pressure Switch
Troubleshooting by Remote Controller SiBE341001 “ ” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Malfunction is detected by the relationship between "pressure detected by the high pressure sensor" and "operation of the high pressure switch". Malfunction Detection Malfunction...
Page 121: E3 " Outdoor Unit: Actuation Of High Pressure Switch
SiBE341001 Troubleshooting by Remote Controller “ ” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Use the protection device circuit to detect continuity at the high pressure switch. Malfunction Detection Malfunction Abnormality is detected when the contact of the high pressure protection switch opens. (Reference) Operating pressure of high pressure switch Decision Operating pressure: 4.0MPa...
Page 122 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check for the points shown below. (1) Is the high pressure switch connector properly connected to the main PCB? (2) Does the high pressure switch have continuity? Are the two points Rectify defective points, if any.
Page 123: E4 " Outdoor Unit: Actuation Of Low Pressure Sensor
SiBE341001 Troubleshooting by Remote Controller “ ” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Abnormality is detected by the pressure value of the low pressure sensor with the main PCB. Malfunction Detection Malfunction Error is generated when the low pressure is dropped under compressor operation.
Page 124 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the stop Open the stop valve. valve open? (1) Mount a pressure gauge on the low pressure service port.
Page 125: E5 " Outdoor Unit: Inverter Compressor Motor Lock
SiBE341001 Troubleshooting by Remote Controller 2.10 “ ” Outdoor Unit: Inverter Compressor Motor Lock Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Inverter PCB takes the position signal from UVW line connected between the inverter and compressor, and the malfunction is detected when any abnormality is observed in the phase- Malfunction current waveform.
Page 126 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if the Local factor stop valve is Open the stop valve. open. Check if the relay wires Replace the connecting wires and to the compressor are ensure right connection of the...
Page 127: E7 " Outdoor Unit: Malfunction Of Outdoor Unit Fan Motor
SiBE341001 Troubleshooting by Remote Controller 2.11 “ ” Outdoor Unit: Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Detect a malfunction based on the current value in the INVERTER PCB (as for motor 2, current value in the fan PCB).
Page 128 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check in the monitor mode Check electric motor (electric motor) corresponding to malfunction code “E7” in the monitor mode of outdoor unit PCB.
Page 129 SiBE341001 Troubleshooting by Remote Controller Troubleshooting No continuity of Replace the fan inverter fuse (F1U) on the fan inverter PCB. PCB. Unable to rotate the fan manually with ease when Replace the corresponding removing the connector of fan motor. the fan motor. Resistance value between the power supply wire Replace the corresponding...
Page 130: E9 " Outdoor Unit: Malfunction Of Electronic
Troubleshooting by Remote Controller SiBE341001 2.12 “ ” Outdoor Unit: Malfunction of Electronic Expansion Valve Coil (Y1E~Y3E) Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Check the continuity of electronic expansion valve coil (Y1E) Malfunction Detection Malfunction No current is detected in the common (COM [+]) when power supply is ON. Decision Conditions Supposed...
Page 131 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn power supply off, and turn power supply on again. Return to normal? External factor other than malfunction (for example, noise etc.).
Page 132: F3 " Outdoor Unit: Abnormal Discharge Pipe Temperature
Troubleshooting by Remote Controller SiBE341001 2.13 “ ” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor. Malfunction Detection Malfunction When the discharge pipe temperature rises to an abnormally high level (135 °C and above) When the discharge pipe temperature rises suddenly (120 °C and above for 10 successive Decision...
Page 133 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Connect the service checker. Press reset and start operation again. Check if discharge pipe thermistor Replace the discharge pipe property is normal.
Page 134: F4 " Outdoor Unit: Humidity Alarm
Troubleshooting by Remote Controller SiBE341001 2.14 “ ” Outdoor Unit: Humidity alarm Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of The condition of the liquid refrigerant returning to the compressor is detected by the temperature and pressure of any part during the cooling operation. Malfunction Detection Malfunction...
Page 135 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Set up a pressure gauge at the service port on the high pressure side. Check if suction pipe Replace the suction pipe thermistor property is thermistor.
Page 136: F9 " Outdoor Unit : Malfunction Of Bs Unit Electronic Expansion Valve
Troubleshooting by Remote Controller SiBE341001 2.15 “ ” Outdoor Unit : Malfunction of BS Unit Electronic Expansion Valve Remote Controller Display Applicable BSVQ100-250PV1 RQCE-PY1 Models Method of This malfunction is detected by whether or not all coils of the electronic expansion valve have continuity.
Page 137 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn OFF the power supply once and then ON again. Return to normal? External factor other than malfunction (for example, noise etc.) While in monitor mode, identify an electronic expansion valve...
Page 138: H7 " Outdoor Unit: Abnormal Outdoor Fan Motor Signal
Troubleshooting by Remote Controller SiBE341001 2.16 “ ” Outdoor Unit: Abnormal Outdoor Fan Motor Signal Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Detection of abnormal signal from fan motor. Malfunction Detection Malfunction In case of detection of abnormal signal at starting fan motor. Decision Conditions Supposed...
Page 139 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the fan motor corresponding to the malfunction code “ ” in the monitor mode. (Refer to P.106~P.107 for how to check.) When Confirmation of malfunction 3 shows as follows: →...
Page 140: H9 " Outdoor Unit: Malfunction Of Thermistor (R1T) For Outdoor Air
Troubleshooting by Remote Controller SiBE341001 2.17 “ ” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Detection Malfunction When the outdoor air temperature thermistor has short circuit or open circuit.
Page 141: J3 , J4 , J5 , J6 , J7 , J8 , J9 " Outdoor Unit: Malfunction
SiBE341001 Troubleshooting by Remote Controller 2.18 “ ” Outdoor Unit: Malfunction of Outdoor unit Thermistor Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Malfunction is detected from the temperature by each thermistor. Malfunction Detection Malfunction When a thermistor disconnection or short circuit occurs during operation. Decision Conditions Supposed...
Page 142 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the malfunction code “ ” or “ ”? There are multiple corresponding thermistors. Use the outdoor unit PCB monitor mode to check which thermistor is affected.
Page 143: Ja " Outdoor Unit: Malfunction Of High Pressure Sensor
SiBE341001 Troubleshooting by Remote Controller 2.19 “ ” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction When the high pressure sensor is short circuit or open circuit. (Not less than 4.22MPa, or 0.01MPa and below) Decision Conditions...
Page 144 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Confirm which high pressure sensor is abnormal using outdoor unit "monitor mode". (Refer to P.106~P.107) 1.
Page 145: Jc " Outdoor Unit: Malfunction Of Low Pressure Sensor
SiBE341001 Troubleshooting by Remote Controller 2.20 “ ” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Malfunction is detected from the pressure detected by the low pressure sensor. Malfunction Detection Malfunction When the low pressure sensor is short circuit or open circuit. (Not less than 1.77MPa, or -0.01MPa and below) Decision Conditions...
Page 146 Troubleshooting by Remote Controller SiBE341001 ∗ 1: Voltage measurement point Outdoor unit PCB (A1P) X31A Black White Micro-computer A/D input ∗2 Measure DC voltage here. ∗ 2: Refer to “Pressure Sensor, Pressure / Voltage Characteristics” table on P201. Troubleshooting...
Page 147: L1 " Outdoor Unit: Malfunction Of Inverter Pcb
SiBE341001 Troubleshooting by Remote Controller 2.21 “ ” Outdoor Unit: Malfunction of Inverter PCB Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Malfunction is detected based on the current value during waveform output before starting compressor. Malfunction Malfunction is detected based on the value from current sensor during synchronous Detection operation when starting the unit.
Page 148 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn OFF the power supply once, and then check the compressor lead wires. Do the lead wires have any disconnection, broken Replace the lead wires.
Page 149: L4 " Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise
SiBE341001 Troubleshooting by Remote Controller 2.22 “ ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Radiation of compressor inverter PCB. Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction...
Page 150 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. The radiation fin of the inverter Faulty radiation from the power unit PCB concerned exceeded a •...
Page 151: L5 " Outdoor Unit: Momentary Overcurrent Of Inverter Compressor
SiBE341001 Troubleshooting by Remote Controller 2.23 “ ” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Malfunction is detected from the current flowing in the power transistor. Malfunction Detection Malfunction When an excessive current (59.1A) flows in the power transistor. (Instantaneous overcurrent also causes activation.) Decision Conditions...
Page 152 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if the stop valve is Open the stop valve. open. Check if the compressor lead Replace compressor lead wires are normal.
Page 153: L8 " Outdoor Unit: Momentary Overcurrent Of Inverter Compressor
SiBE341001 Troubleshooting by Remote Controller 2.24 “ ” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Malfunction is detected from the current flowing in the power transistor. Malfunction Detection Malfunction When the inverter secondary current value is below. (1) 33.5A and over continues for 5 seconds.
Page 154 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Output current check Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if the Open the stop valve. stop valve is open. Check if the compressor Replace the compressor lead wires are...
Page 155: L9 " Outdoor Unit: Inverter Compressor Starting Failure
SiBE341001 Troubleshooting by Remote Controller 2.25 “ ” Outdoor Unit: Inverter Compressor Starting Failure Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Detect the failure based on the signal waveform of the compressor. Malfunction Detection Malfunction Starting the compressor does not complete. Decision Conditions Supposed...
Page 156 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if it is the first Go on to the next page. time to start after ( Starting failure due to aged operation.) installation.
Page 157 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Continued from the previous page. (Start failure due to aged operation.) Refrigerant is melting in refrigerant oil. (The unit is out of Cancel the melting state of power supply for more refrigerant. than 6 hours.) Check if the insulation resistance Replace the inverter compressor.
Page 158: Lc " Outdoor Unit: Malfunction Of Transmission Between Inverter And Main Pcb
Troubleshooting by Remote Controller SiBE341001 2.26 “ ” Outdoor Unit: Malfunction of Transmission between Inverter and Main PCB Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Check the communication state between inverter PCB and main PCB by micro-computer. Malfunction Detection Malfunction When the correct communication is not conducted in certain period.
Page 159 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Are the connectors of the control PCB, and Properly connect the connectors. inverter PCB all securely connected? (*1) Is the type of...
Page 160: P1 " Outdoor Unit: Inverter Over-Ripple Protection
Troubleshooting by Remote Controller SiBE341001 2.27 “ ” Outdoor Unit: Inverter Over-Ripple Protection Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Imbalance in supply voltage is detected in PCB. Malfunction Detection Malfunction When the amplitude of the ripple exceeding 6V is detected. Malfunction is not decided while the unit operation is continued.
Page 161 Be sure to explain to the user that Give the user a copy of "notification of inspection results" and leave there is a "power supply imbalance" it up to him to improve the imbalance. for which DAIKIN is not responsible. Troubleshooting...
Page 162: P4 " Outdoor Unit: Malfunction Of Inverter Radiating Fin
Troubleshooting by Remote Controller SiBE341001 2.28 “ ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction...
Page 163: Pj " Outdoor Unit: Faulty Field Setting After Replacing Main Pcb Or Faulty Combination Of Pcb
SiBE341001 Troubleshooting by Remote Controller 2.29 “ ” Outdoor Unit: Faulty Field Setting after Replacing Main PCB or Faulty Combination of PCB Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of This malfunction is detected according to communications with the inverter. Malfunction Detection Malfunction...
Page 164 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the type of the compressor Replace it with the inverter PCB (A3P) correct compressor correct? inverter PCB.
Page 165: U1 " Reverse Phase, Open Phase
SiBE341001 Troubleshooting by Remote Controller 2.30 “ ” Reverse Phase, Open Phase Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged. Malfunction Detection Malfunction...
Page 166: U2 " Outdoor Unit: Power Supply Insufficient Or Instantaneous Failure
Troubleshooting by Remote Controller SiBE341001 2.31 “ ” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
Page 167 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the condition of the power supply. Check if power supply voltage is 380 to 415V. Check if there is open phase or faulty wiring.
Page 168 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Turn ON the power supply, and start operation. Stop (standby) Replace the noise filter PCB before the fan rotates. (A2P). (Defect of noise filter) Stop (standby) Replace the inverter PCB (A3P). when the compressor If the inverter PCB is badly starts up.
Page 169: U3 " Outdoor Unit: Check Operation Is Not Executed
SiBE341001 Troubleshooting by Remote Controller 2.32 “ ” Outdoor Unit: Check Operation is not Executed Remote Controller Display Applicable RQYQ-PY1 Models RQEQ-PY1 Method of Check operation is executed or not Malfunction Detection Malfunction Malfunction is decided when the unit starts operation without check operation. Decision Conditions Supposed...
Page 170 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Malfunction varies depending on the malfunction detail code. Check the detail code before proceeding to the following step: Confirmation malfunction 3 Confirmation malfunction 4 Making a test run (No test run has been made.)
Page 171: U4 " Malfunction Of Transmission Between Indoor Units
SiBE341001 Troubleshooting by Remote Controller 2.33 “ ” Malfunction of Transmission between Indoor Units and Outdoor Units Remote Controller Display Applicable All indoor unit models RQYQ-PY1 Models RQEQ-PY1 Method of Check if the transmission between indoor unit and outdoor unit is correctly executed using micro-computer.
Page 172 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the detailed malfunction status in the monitor mode. (Refer to P.106~P.107) Confirmation of malfunction 4, Go on to the next page.
Page 173 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Continued from the previous page In Confirmation of malfunction 4, LED lamp indicates as follows: Start operation of all the indoor units.
Page 174: U7 " Outdoor Unit: Transmission Failure (Across Outdoor Units)
Troubleshooting by Remote Controller SiBE341001 2.34 “ ” Outdoor Unit: Transmission Failure (Across Outdoor Units) Remote Controller Display Applicable RQYQ-PY1 RQEQ-PY1 Models Method of Micro-computer checks if transmission between outdoor units is normal. Malfunction Detection Malfunction When transmission is not carried out normally for a certain amount of time Decision Conditions Supposed...
Page 175 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the LED lamps for “Confirmation of malfunction 3” corresponding to the malfunction code “ ”...
Page 176 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 1 Confirmation of malfunction 3 Confirmation of malfunction 4 Check if any disconnection or connection error is Correct the connecting wiring detected in connecting...
Page 177 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Cool/Heat selection C/H SELECT of the external is unified.
Page 178 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 3 Confirmation of malfunction 3 Confirmation of malfunction 4 Check the connection status of connecting wires of the outdoor Replace the outdoor unit main multi to SLAVE 1.
Page 179 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 6 Confirmation of malfunction 3 Confirmation of malfunction 4 Are manual address settings (of the Correct the manual address slave units 1, 2 and 3) correct i n order settings.
Page 180 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 9 Confirmation of malfunction 3 Confirmation of malfunction 4 Is there any wrong connection between indoor and outdoor, Correct the connection wiring between indoor and indoor...
Page 181: U8 " Indoor Unit: Malfunction Of Transmission Between Main And Sub Remote Controllers
SiBE341001 Troubleshooting by Remote Controller 2.35 “ ” Indoor Unit: Malfunction of Transmission between Main and Sub Remote Controllers Remote Controller Display Applicable All indoor unit models Models Method of 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.
Page 182: U9 " Indoor Unit: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System
Troubleshooting by Remote Controller SiBE341001 2.36 “ ” Indoor Unit: Malfunction of Transmission between Indoor and Outdoor Units in the Same System Remote Controller Display Applicable All indoor unit models RQYQ-PY1 Models RQEQ-PY1 Method of Detect malfunction signal for the other indoor units within the circuit by outdoor unit PCB. Malfunction Detection Malfunction...
Page 183: Ua " Improper Combination Of Indoor, Bs And Outdoor Units, Indoor Units And Remote Controller
SiBE341001 Troubleshooting by Remote Controller 2.37 “ ” Improper Combination of Indoor, BS and Outdoor Units, Indoor Units and Remote Controller Remote Controller Display Applicable All indoor unit models BSVQ100~250PV1 Models RQYQ-PY1 RQEQ-PY1 Method of A difference occurs in data by the type of refrigerant between indoor, BS and outdoor units. The number of indoor units is out of the allowable range.
Page 184 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the LED lamps for “Confirmation of malfunction 3” corresponding to the malfunction code “ ”...
Page 185 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 1 Confirmation of malfunction 3 Confirmation of malfunction 4 The number of indoor units connected to the Replace the main PCB of the same refrigerant circuit...
Page 186 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 3 Confirmation of malfunction 3 Confirmation of malfunction 4 Check if the Check if the unit outdoor unit PCB is not connected Replace the main PCB of the...
Page 187 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 5 Confirmation of malfunction 3 Confirmation of malfunction 4 BS malfunction (Excessive number of indoor units connected) Is the number of indoor Decrease the number of indoor...
Page 188 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 7 Confirmation of malfunction 3 Confirmation of malfunction 4 Faulty wiring between BS units Is the wiring between Correct the connection wiring.
Page 189 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 10 Confirmation of malfunction 3 Confirmation of malfunction 4 Faulty connection of BS unit at HP Is the model series Use the outdoor unit of “RQEQ”.
Page 190 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 12 Confirmation of malfunction 3 Confirmation of malfunction 4 Faulty combination of outdoor multi Is the multi combination of Correct the multi combination of...
Page 191: Uc " Address Duplication Of Centralized Controller
SiBE341001 Troubleshooting by Remote Controller 2.38 “ ” Address Duplication of Centralized Controller Remote Controller Display Applicable All indoor unit models Models Centralized controller Method of The principal indoor unit detects the same address as that of its own on any other indoor unit. Malfunction Detection Malfunction...
Page 192: Ue " Malfunction Of Transmission Between Centralized Controller And Indoor Unit
Troubleshooting by Remote Controller SiBE341001 2.39 “ ” Malfunction of Transmission between Centralized Controller and Indoor Unit Remote Controller Display Applicable All indoor unit models intelligent Touch Controller Centralized controller Models Schedule timer Method of Micro-computer checks if transmission between indoor unit and centralized controller is normal. Malfunction Detection Malfunction...
Page 193 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the indoor unit for which “ ” is displayed. Is the transmission Continued to A malfunction (UE) (on the following caused on...
Page 194 Troubleshooting by Remote Controller SiBE341001 Troubleshooting Check the transmission wiring between centralized controllers for any broken wire. Abnormal For details, refer to information in Correct the wiring. the “Procedure for checking broken wires” section. (Refer to P.202) Normal Check the transmission wiring between master centralized controller for any...
Page 195: Uf " System Is Not Set Yet
SiBE341001 Troubleshooting by Remote Controller 2.40 “ ” System is not Set yet Remote Controller Display Applicable All indoor unit models Models RQYQ-PY1 RQEQ-PY1 Method of On check operation, the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature.
Page 196: Uh " Malfunction Of System, Refrigerant System Address Undefined
Troubleshooting by Remote Controller SiBE341001 2.41 “ ” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable All indoor unit models RQYQ-PY1 Models RQEQ-PY1 Method of Detect an indoor unit with no auto address setting. Malfunction Detection Malfunction The malfunction decision is made as soon as the abnormality aforementioned is detected.
Page 197 SiBE341001 Troubleshooting by Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is electricity being Does a malfunction introduce for the first occur even after 12 time after installation minutes elapses from the Normal or after an indoor or...
Page 198 Troubleshooting by Remote Controller SiBE341001 CHECK 1 Check for causes of rise in high pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. ← Stop valve closed Check to be sure the stop valve is open. Local High pipe ←...
Page 199 SiBE341001 Troubleshooting by Remote Controller CHECK 2 Check for causes of drop in low pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. [In cooling] ← Are the electrical characteristics normal? Faulty low pressure sensor (See *1.) Faulty compressor...
Page 200 Troubleshooting by Remote Controller SiBE341001 CHECK 3 Check the Factors of Overheat Operation Identify the defective points referring to the failure factor analysis (FTA) as follows. Hot gas circuit clogging Faulty hot Defective solenoid gas bypass ← Check if coil resistance and insulation valve coil control are normal.
Page 201 SiBE341001 Troubleshooting by Remote Controller 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 202 Troubleshooting by Remote Controller SiBE341001 CHECK 5 Check for causes of wet operation. Referring to the Fault Tree Analysis (FTA) shown below, identify faulty points. Faulty crankcase heater Refrigerant accumulation Frequent ON/OFF of compressor ←Refer to information in the [Check 6] Overcharge of refrigerant section.
Page 203 SiBE341001 Troubleshooting by Remote Controller CHECK 6 Check for overcharge of refrigerant. In case of VRV Systems, the only way to judge as the overcharge of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control. As information for making a judgement, refer to information provided below.
Page 204 Troubleshooting by Remote Controller SiBE341001 CHECK 7 Check for shortage of refrigerant. In case of VRV Systems, the only way to judge as the shortage of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control. As information for making a judgement, refer to information provided below.
Page 205 SiBE341001 Troubleshooting by Remote Controller CHECK 8 Vacuuming and dehydration procedure Conduct vacuuming and dehydration in the piping system following the procedure for <Normal vacuuming and dehydration> described below. Furthermore, if moisture may get mixed in the piping system, follow the procedure for <Special vacuuming and dehydration>...
Page 206 Troubleshooting by Remote Controller SiBE341001 CHECK 9 List of inverter-related malfunction codes Code Name Condition for determining malfunction Major cause Instantaneous overcurrent of • Inverter output current exceeds 32.3A even • Liquid sealing inverter compressor instantaneously. • Faulty compressor • Faulty inverter PCB Overcurrent of inverter •...
Page 207 SiBE341001 Troubleshooting by Remote Controller CHECK 10 Concept of inverter-related malfunction codes Transmission error When transmissions between the main PCB and the inverter PCB Main (Control) PCB are not normal Instantaneous overcurrent of inverter compressor (When inverter output current exceeds 32.3A even instantaneously) Overcurrent of inverter compressor An overcurrent of 19.0A or more continues...
Page 208 Troubleshooting by Remote Controller SiBE341001 CHECK 11 Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air Outdoor unit for fin thermistor R1T For coil For suction pipe For Receiver gas pipe For Receiver outlet liquid pipe k Ω...
Page 209 SiBE341001 Troubleshooting by Remote Controller Outdoor Unit Thermistors for Discharge Pipe ∼ (R3T, R31 33T) k Ω k Ω k Ω k Ω k Ω k Ω T°C T°C T°C T°C T°C T°C 640.44 624.65 72.32 50.5 70.96 13.35 100.5 13.15 609.31 594.43...
Page 210 Troubleshooting by Remote Controller SiBE341001 CHECK 12 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 (V3053)
Page 211 SiBE341001 Troubleshooting by Remote Controller CHECK 13 Broken Wire Check of the Connecting Wires 1. Procedure for checking outdoor-outdoor unit transmission wiring for broken wires On the system shown below, turn OFF the power supply to all equipment, short-circuit between the outdoor-outdoor unit terminal parts F1 and F2 in the "Outdoor Unit A" that is farthest from the centralized remote controller, and then conduct continuity checks between the transmission wiring terminal blocks F1 and F2 of the centralized remote controller using a multiple meter.
Page 212 Troubleshooting by Remote Controller SiBE341001 CHECK 14 Master Unit Central Connector Setting Table The master unit central setting connector (CN1/X1A) is mounted at the factory. • To independently use a single unit of the intelligent Touch Controller or a single unit of the centralized remote controller, do not dismount the master unit central setting connector (i.e., use the connector with the factory setting unchanged).
Page 213 SiBE341001 Troubleshooting by Remote Controller CHECK 15 Master-Slave Unit Setting Table Combination of intelligent Touch Controller and Centralized Remote Controller Master Slave ∗ Pattern Master/ Master/ Master/ Master/ 1-00~4-15 5-00~8-15 1-00~4-15 5-00~8-15 Slave Slave Slave Slave Master Master Slave Slave Master —...
Page 214: Part 7 Appendix
SiBE341001 Part 7 Appendix 1. Piping Diagrams..................206 1.1 Outdoor Unit ..................206 1.2 BS Unit ....................207 2. Wiring Diagrams for Reference............210 2.1 Outdoor Unit ..................210 2.2 BS Unit ....................211 3. Option List ...................214 3.1 Option Lists (Outdoor Unit)..............214 4. Example of connection (R-410A Type) ..........216 Appendix...
Page 215: Piping Diagrams
SiBE341001 Piping Diagrams 1. Piping Diagrams Outdoor Unit RQYQ140, 180PY1 RQEQ140, 180, 212PY1 Appendix...
Page 216: Bs Unit
Piping Diagrams SiBE341001 BS Unit BSVQ100, 160, 250PV1 4D057985B Appendix...
Page 217 SiBE341001 Piping Diagrams BSV4Q100PV1 Appendix...
Page 218 Piping Diagrams SiBE341001 BSV6Q100PV1 Appendix...
Page 219: Wiring Diagrams For Reference
SiBE341001 Wiring Diagrams for Reference 2. Wiring Diagrams for Reference Outdoor Unit RQYQ140, 180PY1 RQEQ140, 180, 212PY1 Appendix...
Page 220: Bs Unit
Wiring Diagrams for Reference SiBE341001 BS Unit BSVQ100, 160, 250PV1 Appendix...
Page 221 SiBE341001 Wiring Diagrams for Reference BSV4Q100PV1 Appendix...
Page 222 Wiring Diagrams for Reference SiBE341001 BSV6Q100PV1 Appendix...
Page 223: Option List
SiBE341001 Option List 3. Option List Option Lists (Outdoor Unit) 3D066354 Appendix...
Page 224 Option List SiBE341001 Appendix...
Page 225: Example Of Connection (R-410A Type)
SiBE341001 Example of connection (R-410A Type) 4. Example of connection (R-410A Type) Heat Pump series (RQ(C)YQ) Example refrigerant branch using REFNET joint Example refrigerant branch using REFNET joint and REFNET header Example refrigerant branch using REFNET header Example of connection (Connection of 8 indoor units) Outdoor unit REFNET header...
Page 226 Example of connection (R-410A Type) SiBE341001 Pipe size selection Piping between outdoor unit (*2) and refrigerant branch kit (part A) Piping between refrigerant branch kits Caution • Choose from the following table in accordance with the outdoor • Choose from the following table in accordance with the total Refer to the diagram below and select the unit system capacity type.
Page 227 SiBE341001 Example of connection (R-410A Type) How to calculate the additional refrigerant to       Total length (m) Total length (m) Total length (m) be charged       of liquid piping of liquid piping of liquid piping ×0.26 ×0.18...
Page 228 Example of connection (R-410A Type) SiBE341001 Heat Recovery series (RQ(C)EQ) Branch with REFNET joint Branch with REFNET joint and header Branch with REFNET header Example of connection (Connection of 8 indoor units) First outdoor unit multi connection piping kit Outdoor unit Outdoor unit Outdoor unit Outdoor...
Page 229 SiBE341001 Example of connection (R-410A Type) Pipe size selection Piping between outdoor unit (*2) and refrigerant branch kit (part A) Piping between refrigerant branch kits Choose from the following table in accordance with the outdoor unit system capacity type. Piping between refrigerant branch kit and BS unit Piping between BS unit and refrigerant branch kit Refer to the diagram below and select the appropriate Piping size (O.
Page 230 Example of connection (R-410A Type) SiBE341001 How to calculate the additional refrigerant Total length(m) Total length(m) 0.37 0.26 Correction amount by outdoor unit of liquid piping of liquid piping to be charged kg/m kg/m size at φ22.2 size at φ19.1 RQCEQ280 RQCEQ636 11.2...
Page 231 Daikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the Warning world. Daikin Industries, Ltd. does not have control over which products are exported to and used in a particular country. Prior to purchase, please therefore confirm with your local authorised importer, distributor and/or retailer whether this product conforms to the applicable standards, and is suitable for use, in the region where the product will be used.

Daikin RQYQ140-180PY1 Service Manual

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