Page 1: Service Manual
ESIE09-05 Service Manual ERQ Condensing Unit Single Phase ERQ 100/125/140 A7V1B (outdoor unit) EKEQD/F/MCBV3 (control box) EKEXV 50/63/80/100/125/140 (expansion valve kit) http://splitoff.ru/tehn-doc.html...
Page 2 : http://splitoff.ru/tehn-doc.html...
Page 3: Table Of Contents
Part 4 Refrigerant Circuit ............. 15 1. Refrigerant Circuit .................16 1.1 Outdoor Unit ...................16 2. Functional Parts Layout ................18 2.1 ERQ 100/125/140 A7V1B ..............18 Part 5 Function ................21 1. Operation Mode ..................22 2. Basic Control..................23 2.1 Normal Operation ...................23 2.2 Compressor PI Control................24...
Page 4 ESIE09-05 6.2 Freeze Prevention ..................40 6.3 Hot Start Control (In Heating Operation Only)........41 Part 6 Control Box EKEQ - CBV3..........43 1. Different Systems with their Control Boxes...........44 1.1 System A: PAIR..................44 1.2 System B: MULTI ...................46 2. X, Y, Z Control..................49 2.1 X-Control ....................49 2.2 Y-Control ....................50 2.3 Z-Control ....................51...
Page 5 ESIE09-05 3.10 “C6” AHU: Failure of Combination (Between AHU PC Board and Fan PC Board)....................176 3.11 “C9” AHU: Malfunction of Thermistor (R1T) for Suction Air ....177 3.12 “CA” AHU: Malfunction of Thermistor for Discharge Air .......178 3.13 “CC” AHU: Malfunction of Humidity Sensor System ......179 3.14 “CJ”...
Page 6 ESIE09-05 1. Piping Diagrams..................228 1.1 Outdoor Unit ..................228 2. Wiring Diagrams..................229 2.1 Outdoor Unit ..................229 2.2 Field Wiring ..................230 3. Option List ...................231 4. Thermistor Resistance / Temperature Characteristics......232 5. Pressure Sensor .................234 6. Method of Replacing the Inverter’s Power Transistors Modules..235 Part 11 Precautions for New Refrigerant (R-410A) ....
Page 7: Introduction
ESIE09-05 Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. Warnings The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 8 Introduction ESIE09-05 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 9 ESIE09-05 Introduction Warning Be sure to use the specified cable to connect between the AHU 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 10 Introduction ESIE09-05 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 11: Part 1 General Information
ESIE09-05 Part 1 General Information 1. Model Names of Outdoor Units, Control Box and Expansion Valve Kit ..2 1.1 Outdoor Units ...................2 1.2 Control Box....................3 1.3 Expansion Valve Kit .................4 2. Combination Table ..................5 : http://splitoff.ru/tehn-doc.html General Information...
Page 12: Model Names Of Outdoor Units, Control Box And Expansion Valve Kit
Model Names of Outdoor Units, Control Box and Expansion Valve Kit ESIE09-05 1. Model Names of Outdoor Units, Control Box and Expansion Valve Kit Outdoor Units Outlook Model name Series Model Name Power Supply Inverter Heat Pump 100A 125A 140A V1 B V1: 1φ, 220~240V, 50Hz : http://splitoff.ru/tehn-doc.html...
Page 13: Control Box
Outlook Types We distinguish 3 types of control boxes: EKEQD: Z-control EKEQF: X,Y-control EKEQM: Z-control (only with VRV outdoor unit, no ERQ) Control type X Control of air temperature (T or T ) by means of external device (DDC controller).
Page 14: Expansion Valve Kit
Model Names of Outdoor Units, Control Box and Expansion Valve Kit ESIE09-05 Expansion Valve Kit Outlook Expansion valve kit installation drawing: Model name Limits for outdoor unit (expansion valve kit). Outdoor unit (class) EKEXV kit EKEXV63~125 EKEXV63~140 EKEXV80~140 Depending on the heat exchanger, a connectable EKEXV (expansion valve kit) must be selected to these limitations.
Page 15: Combination Table
ESIE09-05 Combination Table 2. Combination Table Control box Expansion valve kit Outdoor unit EKEQDCBV3 EKEQFCBV3 EKEXV63 EKEXV80 EKEXV100 EKEXV125 EKEXV140 single ERQ100 phase ERQ125 ERQ140 Heat pump P: Pair: Combination depending on AHU heat exchanger volume and capacity. Allowed heat exchanger volume (dm ) Allowed heat exchanger capacity (kW) EKEXV class Minimum...
Page 16 Combination Table ESIE09-05 : http://splitoff.ru/tehn-doc.html General Information...
Page 17: Part 2 Specifications
ESIE09-05 Part 2 Specifications 1. Specifications ..................8 1.1 Outdoor Units ...................8 1.2 Air Handling Units...................11 : http://splitoff.ru/tehn-doc.html Specifications...
Page 18: Specifications
Specifications ESIE09-05 1. Specifications Outdoor Units Heat Pump 50Hz ERQ 100/125/140 A7V1B TECHNICAL SPECIFICATIONS ERQ100A7V1B ERQ125A7V1B ERQ140A7V1B Nominal Cooling 11,2 14,0 15,5 capacity Heating 12,5 16,0 18,0 Cooling 3,99 3,99 3,42 Heating 4,56 4,15 3,94 Capacity range PED category Category I...
Page 19 ESIE09-05 Specifications TECHNICAL SPECIFICATIONS ERQ100A7V1B ERQ125A7V1B ERQ140A7V1B Type Daphne FVC68D Refrigerant oil Charged volume Piping Type Flare connection Flare connection Flare connection connections Liquid Diameter 9.52 9.52 9.52 (OD) Type Flare connection Flare connection Braze connection Diameter 15.9 15.9 19.1 (OD) Quantity Drain...
Page 20 Specifications ESIE09-05 Notes: RLA based on the following conditions Indoor temperature 27°CDB/19°CWB Outdoor temperature 35°CDB Voltage range Units are suitable for use on electrical systems where the voltage supplied to the unit terminals is not below or above the listed range limits. Maximum allowable voltage unbalance between phases is 2%.
Page 21: Air Handling Units
ESIE09-05 Specifications Air Handling Units Field supply, ask manufacturer. : http://splitoff.ru/tehn-doc.html Specifications...
Page 22 Specifications ESIE09-05 : http://splitoff.ru/tehn-doc.html Specifications...
Page 23: Part 3 List Of Electrical And Functional Parts
ESIE09-05 Part 3 List of Electrical and Functional Parts 1. List of Electrical and Functional Parts ...........14 1.1 Outdoor Unit ...................14 : http://splitoff.ru/tehn-doc.html List of Electrical and Functional Parts...
Page 24: List Of Electrical And Functional Parts
List of Electrical and Functional Parts ESIE09-05 1. List of Electrical and Functional Parts Outdoor Unit ERQ 100/125/140 A7V1B Model Remark Item Name Symbol (PCB terminal) Type JT100G-VDL Relay Inverter Compressor Output 2.5kW 3.0kW 3.5kW Crankcase heater (INV) E1HC A1P X28A Motor M1F·M2F...
Page 25: Part 4 Refrigerant Circuit
ESIE09-05 Part 4 Refrigerant Circuit 1. Refrigerant Circuit .................16 1.1 Outdoor Unit ...................16 2. Functional Parts Layout ................18 2.1 ERQ 100/125/140 A7V1B ..............18 : http://splitoff.ru/tehn-doc.html Refrigerant Circuit...
Page 26: Refrigerant Circuit
Refrigerant Circuit ESIE09-05 1. Refrigerant Circuit Outdoor Unit ERQ 100/125/140 A7V1B No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 36 Hz and 195 Hz by using Inverter compressor (INV) the inverter. 31 steps...
Page 27 ESIE09-05 Refrigerant Circuit C : 3D052712 : http://splitoff.ru/tehn-doc.html Refrigerant Circuit...
Page 28: Functional Parts Layout
Functional Parts Layout ESIE09-05 2. Functional Parts Layout ERQ 100/125/140 A7V1B Birds-eye view Y2S SOLENOID VALVE (CONNECTOR COLOR : BLACK) (HIGH VOLTAGE) S1NPH PRESSURE SENSOR (HIGH) LEAD WIRE (CONNECTOR COLOR : RED) (LOW VOLTAGE) Y1S 4 WAY VALVE LEAD WIRE...
Page 29: Back View
ESIE09-05 Functional Parts Layout Back view R6T THERMISTOR (SUBCOOLING) (MARKING COLOR : WHITE) R3T THERMISTOR (SUCTION 1) (MARKING COLOR : RED) R5T THERMISTOR (SUCTION 2) (MARKING COLOR : GREEN) R1T THERMISTOR (AIR) (MARKING COLOR : YELLOW) R8T THERMISTOR (LIQUID PIPE 2) (CONNECTOR COLOR : WHITE) R4T THERMISTOR (HEAT EXCHANGER) (CONNECTOR COLOR : BLUE)
Page 30 Functional Parts Layout ESIE09-05 : http://splitoff.ru/tehn-doc.html Refrigerant Circuit...
Page 31: Part 5 Function
ESIE09-05 Part 5 Function 1. Operation Mode ..................22 2. Basic Control..................23 2.1 Normal Operation ...................23 2.2 Compressor PI Control................24 2.3 Cooling Operation Fan Control...............25 3. Special Control..................26 3.1 Startup Control ..................26 3.2 Oil Return Operation ................27 3.3 Defrosting Operation ................29 3.4 Pump-down Residual Operation ............30 3.5 Restart Standby..................31 3.6 Stopping Operation ................32...
Page 32: Operation Mode
Operation Mode ESIE09-05 1. Operation Mode Operation in stop mode AHU stop or AHU thermostat ON thermostat OFF Malfunction/Standby Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction/ Standby AHU stop or thermostat OFF Startup control • Cooling startup Pump-down control residual...
Page 33: Basic Control
ESIE09-05 Basic Control 2. Basic Control Normal Operation Cooling Operation Actuator Operation Remarks Used for high pressure protection control, low pressure protection control, discharge pipe Compressor Compressor PI control temperature protection control, and compressor operating frequency upper limit control with inverter protection control.
Page 34: Compressor Pi Control
TcS : Target Tc value (Varies depending on Tc setting, operating M (Normal) frequency, etc.) (factory setting) 2.2.2 For X-, Y-Control For T : see field settings 2.2.3 Frequencies ERQ 100/125/140 INV(Fullload) INV(Unload) INV(Fullload) INV(Unload) INV(Fullload) INV(Unload) 36.0Hz 80.0Hz 140.0Hz 39.0Hz 86.0Hz 146.0Hz...
Page 35: Cooling Operation Fan Control
ESIE09-05 Basic Control Cooling Operation Fan Control In cooling operation with low outdoor air temperature, this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan. Furthermore, when outdoor temperature ≥ 20°C, the compressor will run in Step 7 or higher. When outdoor temperature ≥...
Page 36: Special Control
Special Control ESIE09-05 3. Special Control 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. In addition, 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 37: Oil Return Operation
ESIE09-05 Special Control 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. 3.2.1 Oil Return Operation in Cooling Operation [Start conditions] Referring to the set conditions for the following items, start the oil return operation in cooling.
Page 38 Special Control ESIE09-05 3.2.2 Oil Return Operation in Heating Operation [Conditions to start] The heating oil-returning operation is started referring following conditions. Integrated amount of displaced oil Timer (After the power is turned on, integrated operating-time is 2 hours and subsequently every 8 hours.) In addition, integrated amount of displaced oil is derived from Tc, Te, and the compressor load.
Page 39: Defrosting Operation
ESIE09-05 Special Control Defrosting Operation The defrost operation is performed to solve frost on the outdoor unit heat exchanger when heating, and the heating capacity is recovered. [Conditions to start] The defrost operation is started referring following conditions. Outdoor heat exchanger heat transfer co-efficiency Temperature of heat-exchange (Tb) Timer (2 hours at the minimum) In addition, outdoor heat-exchange co-efficiency is derived from Tc, Te, and the compressor...
Page 40: Pump-Down Residual Operation
Special Control ESIE09-05 Pump-down Residual Operation When activating compressor, if the liquid refrigerant remains in the heat-exchanger, the liquid enters into the compressor and dilutes oil therein resulting in decrease of lubricity. Therefore, the pump-down residual operation is performed to collect the refrigerant in the heat- exchanger when the compressor is down.
Page 41: Restart Standby
ESIE09-05 Special Control Restart Standby Restart is stood by force to prevent frequent power-on/off and to equalize pressure in the refrigerant system. Actuator Operation Compressor Ta>30° C: STEP4 Outdoor unit fan Ta≤30° C: OFF Four way valve Keep former condition. Main electronic expansion valve (EV1) 0 pls Subcooling electronic expansion valve (EV3)
Page 42: Stopping Operation
Special Control ESIE09-05 Stopping Operation Operation of the actuator when the system is down, is cleared up. 3.6.1 When System is in Stop Mode Actuator Operation Compressor Outdoor unit fan Four way valve Keep former condition. Main electronic expansion valve (EV1) 0 pls Subcooling electronic expansion valve (EV3) 0 pls...
Page 43: Protection Control
ESIE09-05 Protection Control 4. Protection Control 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] Pc>3.47MPa High pressure not limited...
Page 44: Low Pressure Protection Control
Protection Control ESIE09-05 Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] Low pressure not limited Pe: LP pressure sensor detection value Pe<0.25MPa Pe>0.39MPa Low pressure Hot gas SVP = OFF limited Pe<0.15MPa...
Page 45: Discharge Pipe Protection Control
ESIE09-05 Protection Control 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. [INV compressor] Discharge pipe protection HTdi :Value of INV compressor discharge pipe control not limited temperature (Tdi) compensated with outdoor air temperature...
Page 46: Inverter Protection Control
Protection Control ESIE09-05 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. [Inverter overcurrent protection control] Not limited •Inverter current ≤ 12A &...
Page 47: Other Control
ESIE09-05 Other Control 5. Other Control Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting”. [Demand 1 setting] Setting Standard for upper limit of power consumption...
Page 48: Outline Of Control
Outline of Control ESIE09-05 6. Outline of Control Thermostat Sensor in Remote Controller (only for Z- control) Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the AHU. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use.”) Cooling If there is a significant difference in the preset temperature and the suction temperature, fine...
Page 49 ESIE09-05 Outline of Control Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature.
Page 50: Freeze Prevention
Outline of Control ESIE09-05 Freeze Prevention Freeze When the temperature detected by liquid pipe temperature thermistor (R2T) of the AHU heat Prevention by Off exchanger drops too low, the unit enters freeze prevention operation in accordance with the Cycle (AHU) following conditions, and is also set in accordance with the conditions given below.
Page 51: Hot Start Control (In Heating Operation Only)
ESIE09-05 Outline of Control Hot Start Control (In Heating Operation Only) At startup with thermostat ON or after the completion of defrosting in heating operation, the AHU fan is controlled to prevent cold air from blasting out and ensure startup capacity. [Detail of operation] During hot start, fan on is carried out when Tc is A°C or after B minutes (see “Field Setting”).
Page 52 Outline of Control ESIE09-05 : http://splitoff.ru/tehn-doc.html Function...
Page 53: Part 6 Control Box Ekeq - Cbv3
ESIE09-05 Part 6 Control Box EKEQ - CBV3 1. Different Systems with their Control Boxes...........44 1.1 System A: PAIR..................44 1.2 System B: MULTI ...................46 2. X, Y, Z Control..................49 2.1 X-Control ....................49 2.2 Y-Control ....................50 2.3 Z-Control ....................51 3. Wiring Diagram of Control Box..............52 3.1 D-box......................52 3.2 F-box ......................53 4.
Page 54: Different Systems With Their Control Boxes
For steering a field supply AHU by an outdoor inverter heat pump, 2 systems can be used: System A: PAIR application (ERQ-outdoor) System B: MULTI application (VRV-outdoor) System A: PAIR System A = PAIR : ERQ + EXV-Kit EKEQDCB EKEQFCB EKEXV-kit Field supply Pair application here means 1 outdoor unit + 1 AHU.
Page 55 ESIE09-05 Different Systems with their Control Boxes : http://splitoff.ru/tehn-doc.html Control Box...
Page 56: System B: Multi
50 m length: 100 m 20 m 20 m 1 phase System B: MULTI Only for combining VRV + AHU + indoors. No ERQ! System B = MULTI (suction control) : VRV + EXV-Kit EKEQMCB EKEXV-KIT Field supply EKEQMCB EKEXV-KIT...
Page 57 ESIE09-05 Different Systems with their Control Boxes : http://splitoff.ru/tehn-doc.html Control Box...
Page 58 Different Systems with their Control Boxes ESIE09-05 Allowable lengths and heights System B: EXV-kit Control Box H/P & VRV (M-type) KIT n Indoor 1 Indoor n Allowable height: AHU1 ≤ Total system: ≤ 40 m EXV-kit 1 (outdoor unit can be above ≤...
Page 59: X, Y, Z Control
In case of X-control, a DDC-controller is needed to operate the unit. This DDC-controller is field supply but in order to connect it to our ERQ-system, it is required that it emits a 0-10 VDC signal towards the control box.
Page 60: Y-Control
DDC asks less capacity = room temp. - set temp. ΔT Y-Control Control of evaporating and condensing temperature (Te and Tc) by Daikin control (no DDC needed). Fixed Te or Tc Te = user setting: -3 ~ 10°C Tc = user setting: 43 ~ 49°C : http://splitoff.ru/tehn-doc.html...
Page 61: Z-Control
No air temperature control With Y-control, there is no external input to change Te/Tc value. Their values can only be changed by local setup with a Daikin remote controller (during installation). We refer to the chapter “Field Setting” for further information.
Page 62: Wiring Diagram Of Control Box
Wiring Diagram of Control Box ESIE09-05 3. Wiring Diagram of Control Box D-box : http://splitoff.ru/tehn-doc.html Control Box...
Page 63: F-Box
ESIE09-05 Wiring Diagram of Control Box F-box : http://splitoff.ru/tehn-doc.html Control Box...
Page 64: Attention Points
Attention Points ESIE09-05 4. Attention Points Do not forget to place the capacity setting adaptor. Otherwise, you’ll get UA or PJ error. All capacity setting adaptors are delivered with the control box. Polarity of the C5/C6-contact (F-box, X-control) C5 = ”-”, C6 = ”+” : http://splitoff.ru/tehn-doc.html Control Box...
Page 65: System A: Ekeqf & Ekeqd-Box: Installation And Operation Manual
ESIE09-05 System A: EKEQF & EKEQD-box: Installation and Operation Manual 5. System A: EKEQF & EKEQD-box: Installation and Operation Manual : http://splitoff.ru/tehn-doc.html Control Box...
Page 66 Daikin con unidades de tratamiento de aire suministradas Manuale di installazione e d'uso Italiano Kit opzioni per la combinazione di unità di condensazione Daikin con unità per il trattamento dell’aria non in dotazione Manual de instalação e de funcionamento Portugues Kit de opções para combinação de unidades de condensação Daikin...
Page 67 EKEQFCBV3 EKEQDCBV3 11 8 X24A expansion valve liquid defrost remocon outdoor ON/OFF error operation 0-10 V C7 C8 R3 R4 R1 R2 C9 C10 P1 P2 F1 F2 T1 T2 C1 C2 C3 C4 C5 C6 0 +10 H4 H4 H5 H6 EKEQFCBV3 EKEQFCBV3...
Page 68 Installation and Option kit for combination of Daikin condensing units EKEQFCBV3 operation manual EKEQDCBV3 with field supplied air handling units ONTENTS NTRODUCTION Page Introduction ............... 58 ■ Do only use this system in combination with a field supplied air handling unit. Do not connect this system Installation ..............
Page 69 ■ Each outdoor unit can be connected to a range of air handling units. ■ The range is determined by the allowed expansion valve kits. EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 70 The unit may malfunction or components may burn out. ■ Is the unit safely grounded? Dangerous at electric leakage. EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 71 (finish the connection with tape eventually). EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 72 Close the unnecessary openings with stoppers (closing cups). Close the lid securely after installation to ensure that the control box is watertight. EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 73 WHT ....White X1M-R1/R2..Thermistor liquid YLW ....Yellow X1M-R3/R4..Thermistor gas X1M-Y1~6 ..Expansion valve X2M-C1/C2..Output: error status EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 74 YLW....Yellow X1M-R1/R2 ..Thermistor liquid X1M-R3/R4 ..Thermistor gas X1M-R5/R6 ..Thermistor air X1M-T1/T2 ..Input: ON/OFF X1M-Y1~6 ..Expansion valve EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 75 NOTE (R1T) can be replaced by an optional remote sensor kit KRCS01-1(A) (to be ordered separately). EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 76 If the unit collects ice: see "Troubleshooting" on page 68. Confirm that the fan of the air handling unit is ON. EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 77 (*) After power failure, T1/T2 must be changed to open (no cooling/heating Voltage output from controller 10 V requested). (field supply) EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 78 Ensure that the air handling unit fan keeps operating. In these cases, contact your dealer. EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 79 Dismantling of the unit, treatment of the refrigerant, of oil and of other parts must be done in accordance with relevant local and national legislation. EKEQFCBV3 + EKEQDCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52446-1...
Page 80: System B: Ekeqm-Box: Installation And Operation Manual
System B: EKEQM-box: Installation and Operation Manual ESIE09-05 6. System B: EKEQM-box: Installation and Operation Manual : http://splitoff.ru/tehn-doc.html Control Box...
Page 81 Daikin con unidades de tratamiento de aire suministradas Manuale di installazione e d'uso Italiano Kit opzioni per la combinazione di unità di condensazione Daikin con unità per il trattamento dell’aria non in dotazione Manual de instalação e de funcionamento Portugues Kit de opções para combinação de unidades de condensação Daikin...
Page 82 OTES expansion valve liquid remocon outdoor ON/OFF R3 R4 R1 R2 R5 R6 P1 P2 F1 F2 T1 T2 C1 C2 H3 H4 H4 X24A H3 H5 H5 : http://splitoff.ru/tehn-doc.html...
Page 83 Installation and Option kit for combination of Daikin condensing units EKEQMCBV3 operation manual with field supplied air handling units ONTENTS NTRODUCTION Page Introduction ..............73 ■ Do only use this system in combination with a field Before installation ................73 supplied air handling unit. Do not connect this system to other appliances.
Page 84 Power supply and control wiring for air handling unit and controller (power supply is separate from the outdoor unit) Air thermistor control for air handling unit Remote controller EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52447-1...
Page 85 L is to be considered as a part of the total maximum piping length. See installation manual of the outdoor unit for piping installation. EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52447-1...
Page 86 ■ select the pipe size nearest to the required size. ■ use the suitable adapters for the change-over from inch to mm pipes (field supply). EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52447-1...
Page 87 (finish the connection with tape eventually). EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52447-1...
Page 88 The cables require an additional pull- relief. Strap the cable with the installed tie wrap. EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52447-1...
Page 89 X1M-P1/P2 ..Communication remote controller YLW ....Yellow X1M-R1/R2..Thermistor liquid X1M-R3/R4..Thermistor gas X1M-R5/R6..Thermistor air X1M-T1/T2..Input: ON/OFF X1M-Y1~6 ..Expansion valve EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52447-1...
Page 90 For room temperature control the delivered thermistor NOTE (R1T) can be replaced by an optional remote sensor kit KRCS01-1(A) (to be ordered separately). EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52447-1...
Page 91 Confirm that the fan of the air handling unit is ON. EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52447-1...
Page 92 Check if the heat source of the room is excessive. Cooling effect decreases if heat gain of the room is too large. EKEQMCBV3 Installation and operation manual Option kit for combination of Daikin condensing units with field supplied air handling units : http://splitoff.ru/tehn-doc.html 4PW52447-1...
Page 93: Part 7 Test Operation
ESIE09-05 Part 7 Test Operation 1. Test Operation ..................84 1.1 Procedure and Outline ................84 1.2 Operation when Power is Turned On .............90 2. Outdoor Unit PC Board Layout .............91 3. Field Setting ..................92 3.1 Field Setting from Remote Controller .............92 3.2 Field Setting from Outdoor Unit............100 : http://splitoff.ru/tehn-doc.html Test Operation...
Page 94: Test Operation
Test Operation ESIE09-05 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 Is the power supply single-phase 220-240V / 50Hz? Check the below items. Have you finished a ductwork to drain? Power wiring Have you detached transport fitting?
Page 95: Air Tight Test And Vacuum Drying
ESIE09-05 Test Operation 1.1.3 Air Tight Test and Vacuum Drying Air tight test: Make sure to use nitrogen gas. Pressurize the liquid and gas pipes to 4.0 MPa (40 bar) (do not pressurize more than 4.0 MPa (40 bar)). If the pressure does not drop within 24 hours, the system passes the test. If the pressure drops, check where the nitrogen leaks from.
Page 96 Test Operation ESIE09-05 To avoid compressor breakdown. Do not charge the refrigerant more than the specified amount. This outdoor unit is factory charged with refrigerant and depending on pipe sizes and pipe lengths some systems require additional charging of refrigerant. See Installation manual. In case re-charge is required, refer to the nameplate of the unit.
Page 97 ESIE09-05 Test Operation 1.1.5 Check Operation * During check operation, mount front panel to avoid the misjudging. * Check operation is mandatory for normal unit operation. (When the check operation is not executed, alarm code "U3" will be displayed.) Set to setting mode 1 (H1P led is off ) (refer to "Setting mode 1") The test operation is started automatically.
Page 98 Test Operation ESIE09-05 Malfunction code In case of an alarm code displayed on remote controller: Malfunction Nonconformity during installation Remedial action code The shutoff valve of an outdoor unit is left Open the gas-side shutoff valve and the liquid-side shutoff valve. closed.
Page 99 ESIE09-05 Test Operation 1.1.6 Confirmation on Normal Operation • Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 24°CDB or higher, the unit can not be operated with heating mode. See the installation manual attached.) •...
Page 100: Operation When Power Is Turned On
Test Operation ESIE09-05 Operation when Power is Turned On 1.2.1 When Turning On Power First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address. Status Outdoor unit Test lamp H2P ..Blinks Can also be set during operation described above.
Page 101: Outdoor Unit Pc Board Layout
ESIE09-05 Outdoor Unit PC Board Layout 2. Outdoor Unit PC Board Layout ERQ100 / 125 / 140A7V1B : http://splitoff.ru/tehn-doc.html Test Operation...
Page 102: Field Setting
Field Setting ESIE09-05 3. Field Setting Field Setting from Remote Controller Individual function of AHU can be changed from the remote controller. At the time of installation or after service inspection / repair, make the local setting in accordance with the following description.
Page 103 ESIE09-05 Field Setting 3.1.2 Simplified Remote Controller BRC2C51 1. Remove the upper part of remote controller. 2. When in the normal mode, press the [BS6] BUTTON (2) (field set), and the FIELD SET MODE is entered. 3. Select the desired MODE No. with the [BS2] BUTTON (3) (temperature setting ) and the [BS3] BUTTON (3) (temperature setting 4.
Page 104 Remark 1) more settings possible, see “Field Settings”. 3.1.4 Field Settings - Details (1) System Setting The ERQ is a heat pump but can be limited to “cooling only” or “heating only” by a setting. Mode n° Setting switch n°...
Page 105 ESIE09-05 Field Setting (2) Control Setting for EKEQF-Box With the EKEQF-box, 2 types of control are possible: x-control: with DDC-controller y-control: no DDC-controller. For more information about x-, y-control, refer to “Part 6 Control Box EKEQ - CBV3”. Mode n° Setting switch n°...
Page 106 Field Setting ESIE09-05 (5) Thermostat Control (5.1) X-control Thermo off When the DDC controller maintains level A for more than B minutes, and the thermostat is on, thermo off is carried out for at least C minutes. After C minutes, thermostat on-conditions are checked.
Page 107 Setting switch n° Setting position n° Setting B (°C) C (min) (5.3) Z-control Standard Daikin thermostat on/off control. (6) Target Refrigerant Temperature Setting (6.1) X-control Cooling: Upper & lower limit of T can be chosen Mode n° setting Setting switch n°...
Page 108 (°C) (°C) (6.2) Y-control Since there is no external input to change the T value, their values can only be changed by local setup by means of the Daikin remote controller (during installation). Cooling: T setting Heating: T setting Mode n° setting Setting switch n°...
Page 109 ESIE09-05 Field Setting 3.1.5 Setting of Operation Control Mode from Remote Controller (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller. Furthermore, operations such as remote controller ON/OFF can be limited in accordance with the combination conditions.
Page 110: Field Setting From Outdoor Unit
Field Setting ESIE09-05 Field Setting from Outdoor Unit 3.2.1 Setting by Dip Switches The following field settings are made by dip switches on PC board. Dipswitch Setting item Description Setting Cool / Heat Used to set cool / heat change over setting by remote DS1-1 change over controller equipped with outdoor unit.
Page 111 ESIE09-05 Field Setting Caution Capacity Setting after changing the main PC Board(A1P) to spare parts PC Board When you change the main PC Board(A1P) to spare parts PC Board, please carry out the following setting. Please Attach the Capacity Setting Adaptor corresponding to Capacity Class (ex. 112, 140, 160) in connector X51A. (See Below) Capacity Setting Adaptor Outdoor unit...
Page 112 Field Setting ESIE09-05 Mode changing procedure Using the MODE button, the modes can be changed as follows. (Normal) Push and hold the BS1 Push the BS1(MODE button) (MODE button) for 5 seconds. one time. Setting mode 2 Setting mode 1 Monitor mode Push the BS1(MODE button) one time.
Page 113 ESIE09-05 Field Setting 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. • COOL/HEAT selection (IND) ·····················Used to select COOL or HEAT by individual outdoor unit (factory set).
Page 114 Field Setting ESIE09-05 b. “Setting mode 2” Setting item Description Cool/heat unified Sets address for cool/heat unified operation. address Push and hold the MODE (BS1) button for 5 seconds and set to Low noise/demand Address for low noise/demand operation “Setting mode 2”. address Used to conduct test operation without making changes Test operation...
Page 115 ESIE09-05 Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set ∗ Address wxxxxxx Binary number wxxxxxw Cool / Heat Unified address (6 digits) wxwwwww ∗ Address wxxxxxx Binary number wxxxxxw Low noise/demand address...
Page 116 Field Setting ESIE09-05 Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set Level 1 (outdoor fan with 6 step or lower) wxxxxxw ∗ 25 Low noise setting Level 2 (outdoor fan with 5 step or lower) wxxxxwx Level 3 (outdoor fan with 4 step or lower) wxxxwxx...
Page 117 ESIE09-05 Field Setting c. Monitor mode LED display Setting item Data display To enter the monitor mode, push the Various setting See below MODE (BS1) button when in C/H unified address “Setting mode 1”. Low noise/demand address Not used Airnet address Lower 6 digits Number of connected AHUs Number of connected zone units...
Page 118 Field Setting ESIE09-05 Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and confirm the data for each setting. Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.
Page 119 ESIE09-05 Field Setting 3.2.2 Cool / Heat Mode Switching There are the following 2 cool/heat switching modes. Set cool/heat separately for each outdoor unit system by AHU remote controller (only for Z- control). Set cool/heat separately for each outdoor unit system by cool/heat switching remote controller (X-, Y- and Z-control).
Page 120 Field Setting ESIE09-05 Set Cool / Heat Separately for Outdoor Unit System by Cool/Heat Switching Remote Controller Set outdoor unit PC board DS1-1 to OUT (factory set). Set cool/heat switching to IND (individual) for “Setting mode 1” (factory set). : http://splitoff.ru/tehn-doc.html Test Operation...
Page 121 ESIE09-05 Field Setting 3.2.3 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 DTA104), you can lower operating noise. Be aware that this setting may cause a slight capacity drop.
Page 122 Field Setting ESIE09-05 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. Set item Condition Content Demand...
Page 123 ESIE09-05 Field Setting Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) In setting mode 2, push the BS1 (MODE button) one time. → Setting mode 1 is entered and H1P off. During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are displayed.
Page 124 Field Setting ESIE09-05 : ON : OFF : Blink Setting Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P External low noise / (Factory...
Page 125 ESIE09-05 Field Setting 3.2.4 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective expansion valve. All outdoor unit’s operation is prohibited. [Operation procedure] In “Setting Mode 2” with units in stop mode, set 21 “Refrigerant Recovery / Vacuuming mode”...
Page 126 Field Setting ESIE09-05 3.2.6 Check Operation To prevent any trouble in the period of installation at site, the system is provided with a test operation mode enabling check for incorrect wiring, stop valve left in closed, coming out (or misplacing with suction pipe thermistor) or discharge pipe thermistor and judgment of piping length, refrigerant overcharging, and learning for the minimum opening degree of electronic expansion valve.
Page 127: Part 8 Installation And Operation Manual
ESIE09-05 Part 8 Installation and Operation Manual : http://splitoff.ru/tehn-doc.html Installation and Operation Manual...
Page 128: Installation Manual
INSTALLATION MANUAL Inverter condensing unit Installation manual English Inverter condensing unit Installationsanleitung Deutsch Invertierer Verflüssiger Installationsanleitung Français Groupe condenseur à inverter Montagehandleiding Nederlands Condensorunit met inverter Manual de instalación Español Unidad condensadora Inverter Manuale d'installazione Italiano Unità di condensazione a inverter Manual de instalação Portugues Unidade de condensação com inversor...
Page 129 (mm) ≥100 ≥100 ≥100 ≥100 ≥100 ≤500 ≥1000 ≥150 ≥150 ≥150 ≤500 ≥1000 B 2 B 2 ≥500 ≤500 ≥500 ≥1000 D 2 D 2 D 2 D 2 ≥100 ≥500 L2>H ≥100 ≥500 L2<H L 1 L 1 0<L1≤ 1 / 2 H ≥750 ≥250 ≤500...
Page 130 C/H SELECTOR 230 V TO IN/D UNIT TO OUT/D UNIT 16 V A B C TO IN/D TO OUT/D UNIT UNIT DS1 1 F1 F2 A B C DS1 1 A B C : http://splitoff.ru/tehn-doc.html...
Page 131: Safety Considerations
Technical and electrical specifications ........123 ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR 3. Before installation ..............123 OTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLY TO USE ACCESSORIES MADE BY DAIKIN WHICH ARE 3.1. Precautions for R410A ............... 123 3.2.
Page 132: Introduction
Failure to install an earth leakage breaker may cause electric hardware are field supply and are to be selected by the installer. shocks or fire. Refer to the manual "Option kit for combination of Daikin ■ Install drain piping according to this installation manual to ensure condensing units with field supplied evaporators"...
Page 133: Standard Supplied Accessories
2.2. Standard supplied accessories 3.3. Handling As shown in the figure, bring the unit slowly by grabbing the left and right grips. Gas line piping (1) + copper gasket Gas line piping (2) Gas line piping (3) Installation manual Operation manual Place your hands on the corner instead of holding the suction inlet in the side of the casing, otherwise the casing could be deformed.
Page 134: Precautions On Installation
■ Turn the air outlet side toward the building’s wall, fence or The equipment described in this manual may cause screen. electronic noise generated from radio-frequency energy. The equipment complies to specifications that are designed to provide reasonable protection against such interference.
Page 135: Installation Method For Prevention Of Falling Over
5.1. Installation method for prevention of falling over Connect a field supplied vinyl hose (internal diameter of 25 mm) to the drain socket (A). If it is necessary to prevent the unit from falling over, install as shown If the hose is too long and hangs down, fix it carefully to prevent in the figure.
Page 136: Refrigerant Pipe Size And Allowable Pipe Length
7.1. Selection of piping material ■ Do not stack more than one unit. NOTE ■ Foreign materials inside pipes (including oils for fabrication) ■ About 100 mm is required as the dimension ≤ must be 30 mg/10 m. for laying the upper outdoor unit’s drain pipe. ■...
Page 137: Cautions For Brazing
■ Always use the supplied copper gasket when connecting the You must use a torque wrench but if you are obliged to NOTE gas pipe supplied with the unit. See "9. Refrigerant piping" on install the unit without a torque wrench, you may follow page 127.
Page 138: Preventing Foreign Objects From Entering
■ For ERQ140 only For cooling operation under low ambient temperature or any other operation under low pressure, apply silicon pad or similar The size of the gas side stop valve is Ø15.9 while the inter-unit piping to prevent freezing of the gas stop valve flare nut (see figure). is Ø19.1.
Page 139: Precautions When Connecting Field Piping And
9.6. Precautions when connecting field piping and 9.7. Leak test and vacuum drying regarding insulation The units were checked for leaks by the manufacturer. ■ Be careful not to let the air handling and outdoor branch piping See figure 6 and refer to "Additional refrigerant charge" on page 129 come into contact with the compressor terminal cover.
Page 140: Important Information Regarding The Refrigerant Used
See figure 6. Precautions when adding R410A Be sure to charge the specified amount of refrigerant in liquid state to Pressure reducing valve the liquid pipe. Nitrogen Since this refrigerant is a mixed refrigerant, adding it in gas form may Tank cause the refrigerant composition to change, preventing normal Siphon system...
Page 141: Procedures For Adding Refrigerant
10.2. 2 procedures for adding refrigerant Procedure 2: Charging while the outdoor unit is operating How to connect the tank? See the figure in "How to connect the tank?" on page 131. Completely open the gas side stop valve and liquid side stop valve.
Page 142: Precautions On Electrical Wiring Work
WHT .......White Y2S......Solenoid valve (hot gas) YLW......Yellow Y3S......Solenoid valve (unload circuit) ORG .......Orange Z1C~Z8C....Noise filter (ferrite core) BLK ......Black Z1F~Z4F ....Noise filter A1P ......Printed circuit board (main) A2P ......Printed circuit board (inverter) Cool/heat selector A3P ......Printed circuit board (noise filter) S1S......Selector switch (fan/cool –...
Page 143: Connection Example Of Total System Wiring
11.3. Connection example of total system wiring ■ Use a power wire pipe for the power wiring. (See figure 8) ■ Outside the unit, make sure the low voltage electric wiring (i.e. for the remote control, between units, etc.) Power and the high voltage electric wiring do not pass near Earth leakage breaker each other, keeping them at least 50 mm apart.
Page 144 Setting the cool/heat operation Precautions when laying power wiring Use round pressure terminals for connections to the power Performing cool/heat setting with the remote controller terminal block. connected to the control box. Keep the cool/heat selector switch (DS1-1) on the outdoor unit When none are available, follow the instructions below.
Page 145: Before Operation
12. B 12.2. Checks before initial start-up EFORE OPERATION Note that during the first running period of the unit, NOTE 12.1. Service precautions required power input may be higher than stated on the nameplate of the unit. This phenomenon originates from the compressor that needs elapse of a 50 hours run in period before reaching smooth operation and WARNING: ELECTRIC SHOCK...
Page 146 Location of the DIP switches, leds and buttons Setting mode 1 Led H1P~H8P The H1P led is off (COOL/HEAT selection setting). Push button switches BS1~BS5 Setting procedure DIP switches 2 (DS1-1, DS1-2) Push the button and adjust the led indication to either BS2 SET one of the possible settings as shown below in the field marked In case of COOL/HEAT setting by each individual outdoor unit...
Page 147: Test Operation
12.4. Test operation 3.3 Possible settings for function D and E For function D ( ) only: the noise of level 3< L.N.O.P level 2< level 1 ( ■ After turning on the power supply, the unit can not NOTE For function E ( ) only: the power consumption of DEMAND...
Page 148: Checks In Normal Operation
12.6. Temperature adjustment operation confirmation Measure to be taken when operation finishes abnormally 1. Confirm the error code on the remote controller. After the test run is over, operate the unit normally. (Heating is not 2. Correct what is abnormal. possible if the outdoor temperature is 24°C or higher.) (See the installation manual and operation manual or ■...
Page 149: Caution For Refrigerant Leaks
The following standards may be applicable if local regulations are not available. The ERQ, like other air conditioning systems, uses R410A as refrigerant. R410A itself is an entirely safe non-toxic, non- combustible refrigerant. Nevertheless care must be taken to ensure...
Page 150 OPERATION MANUAL Inverter condensing unit Operation manual English Inverter condensing unit Bedienungsanleitung Deutsch Invertierer Verflüssiger Manuel d'utilisation Français Groupe condenseur à inverter Gebruiksaanwijzing Nederlands Condensorunit met inverter Manual de operación Español Unidad condensadora Inverter Manuale d'uso Italiano Unità di condensazione a inverter ERQ100A7V1B Manual de operações ERQ125A7V1B...
Page 151 UNIT NO. OTES : http://splitoff.ru/tehn-doc.html...
Page 152: Safety Cautions
Be sure to use only accessories made by Daikin which are specifically designed for use with the equipment and have them installed by a professional. ■...
Page 153: Important Information Regarding The Refrigerant Used
■ Do not operate the air conditioner when using a room fumigation Cautions - type insecticide. Failure to observe could cause the chemicals to become ■ Do not use the air conditioner for other purposes. deposited in the unit, which could endanger the health of those In order to avoid any quality deterioration, do not use the unit for who are hypersensitive to chemicals.
Page 154: Remote Controller
In case a remote controller is installed, the remote controller displays For systems with Daikin remote controller and without cool/ . It may take some time before the fan starts. This is not a heat changeover remote control switch (See figure 4) malfunction.
Page 155: Energy Saving And Optimum Operation
AINTENANCE ■ The heating capacity drops when the outside NOTE temperature falls. If this happens, use another heating device together with the unit. (When using Pay attention to the fan. together with appliances that produce open fire, It is dangerous to inspect the unit while the fan is running. ventilate the room constantly.) Be sure to turn off the main switch and to remove the fuses Do not place appliances that produce open fire in...
Page 156: Troubleshooting
Symptom 3: Fan operation is possible, but cooling and heating do not Symptom 12: The inside of an outdoor unit is warm even when the unit work. has stopped ■ Immediately after the power is turned on. ■ This is because the crankcase heater is warming the The micro computer is getting ready to operate.
Page 157: After-Sales Service And Warranty
■ The system operates but cooling or heating is insufficient Recommended inspection and maintenance cycles ■ Check if air inlet or outlet of outdoor or air handling unit is not Be aware that the mentioned maintenance and replacement cycles blocked by obstacles. do not relate to the warranty period of the components.
Page 158 ■ Recommended replacement cycle of wear parts OTES Table 2: "Replacement Cycle" list Maintenance cycle (replacements and/ Component Inspection cycle or repairs) Air filter 5 years High efficiency filter (Optional) 1 year 1 year Fuse 10 years Crankcase heater 8 years Table 2 indicates main components.
Page 159: Part 9 Troubleshooting
ESIE09-05 Part 9 Troubleshooting 1. Symptom-based Troubleshooting ............151 2. Troubleshooting by Remote Controller ..........154 2.1 The INSPECTION / TEST Button............154 2.2 Self-diagnosis by Wired Remote Controller .........155 2.3 Remote Controller Service Mode ............156 2.4 Remote Controller Self-Diagnosis Function .........158 3. Troubleshooting by Indication on the Remote Controller ....165 3.1 “A0”...
Page 160 ESIE09-05 3.31 “L1” Outdoor Unit: Malfunction of PC Board.........200 3.32 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise ......................201 3.33 “L5” Outdoor Unit: Inverter Compressor Abnormal ......202 3.34 “L8” Outdoor Unit: Inverter Current Abnormal ........203 3.35 “L9” Outdoor Unit: Inverter Start up Error..........204 3.36 “LC”...
Page 161: Symptom-Based Troubleshooting
ESIE09-05 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 162 Symptom-based Troubleshooting ESIE09-05 Symptom Supposed Cause Countermeasure The airflow rate Even pressing the AIRFLOW In heating operation, when the Normal operation. is not RATE SET button makes no room temperature reaches the set reproduced changes in the airflow rate. degree, the outdoor unit will stop according to the while the AHU is brought to fan LL setting.
Page 163 ESIE09-05 Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure 15 LCD display "88" Immediately after turning ON The reason is that the system is Normal operation. appears on the the power supply checking to be sure the remote This code is displayed for a period remote controller is normal.
Page 164: Troubleshooting By Remote Controller
Troubleshooting by Remote Controller ESIE09-05 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. Press Inspection/Test Operation button for more than 4 seconds. AHU settings can be made Service data can be obtained.
Page 165: Self-Diagnosis By Wired Remote Controller
ESIE09-05 Troubleshooting by Remote Controller Self-diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.
Page 166: Remote Controller Service Mode
Troubleshooting by Remote Controller ESIE09-05 Remote Controller Service Mode How to Enter the Service Mode Service Mode 1. Select the mode No. Operation Set the desired mode No. with the button. 2. Return to the normal operation mode. Method Push the button one time.
Page 167 ESIE09-05 Troubleshooting by Remote Controller Mode Function Contents and operation method Remote controller display example Malfunction history Display malfunction history. display The history No. can be changed with the Unit 1 button. Malfunction code 2-U4 Malfunction code Hystory No: 1 - 9 1: Latest (VE007) Display of sensor...
Page 168: Remote Controller Self-Diagnosis Function
Troubleshooting by Remote Controller ESIE09-05 Remote Controller Self-Diagnosis Function The remote controller switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No. let you know the contents and location of the malfunction.
Page 169 ESIE09-05 Troubleshooting by Remote Controller : ON : OFF : Blink Malfunction Operation Malfunction contents Page code lamp Referred Error of external protection device PC board defect, E PROM defect Malfunction of drain level control system (S1L) — Fan motor (M1F) lock, overload Abnormal power supply voltage Malfunction of moving part of electronic expansion valve (Y1E) Drain level above limit...
Page 170 Troubleshooting by Remote Controller ESIE09-05 : ON : OFF : Blink Malfunction Operation Malfunction contents Page code lamp Referred Outdoor Unit Malfunction of power unit — Malfunction of transmission between inverter and control PC board High voltage of capacitor in main inverter circuit. System Low pressure drop due to refrigerant shortage or electronic expansion valve failure...
Page 171 ESIE09-05 Troubleshooting by Remote Controller Malfunction code indication by outdoor unit PC board <Monitor mode> Contents of malfunction Malfunction To enter the monitor mode, push the code MODE (BS1) button when in In-phase malfunction of DIII Net Detection of DIII Net “Setting mode 1”.
Page 172 Troubleshooting by Remote Controller ESIE09-05 : ON : OFF : Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 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 x c c c x c c w x x c w w x...
Page 173 ESIE09-05 Troubleshooting by Remote Controller <Monitor mode> Contents of malfunction Malfunction code To enter the monitor mode, push the MODE (BS1) button when in Open phase/Power supply imbalance Imbalance of inverter power supply voltage “Setting mode 1”. Faulty temperature sensor of inverter Faulty thermistor of inverter fin radiation fin Refrigerant shortage...
Page 174 Troubleshooting by Remote Controller ESIE09-05 : ON : OFF : Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 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 x c c ∗1 x c x...
Page 175: Troubleshooting By Indication On The Remote Controller
ESIE09-05 Troubleshooting by Indication on the Remote Controller 3. Troubleshooting by Indication on the Remote Controller “ ” AHU: Error of External Protection Device Remote Controller Display Applicable All AHU models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Actuation of external protection device Causes Improper field set...
Page 176: A1" Ahu: Pc Board Defect
Troubleshooting by Indication on the Remote Controller ESIE09-05 “ ” AHU: PC Board Defect Remote Controller Display Applicable All AHU models Models Method of Check data from E²PROM. Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.
Page 177: A6" Ahu: Fan Motor (M1F) Lock, Overload
ESIE09-05 Troubleshooting by Indication on the Remote Controller “ ” AHU: Fan Motor (M1F) Lock, Overload Remote Controller Display Applicable All AHU models Models Method of Detection by failure of signal for detecting number of turns to come from the fan motor Malfunction Detection Malfunction...
Page 178: Abnormal Power Supply Voltage
Troubleshooting by Indication on the Remote Controller ESIE09-05 Abnormal Power Supply Voltage Remote Controller Display Applicable FXMQ40~125P Models Method of Detect malfunction checking the input voltage of fan motor. Malfunction Detection Malfunction When the input voltage of fan motor is 150V and below, or 386V and above. Decision Conditions Supposed...
Page 179: A9" Ahu: Malfunction Of Moving Part Of Electronic Expansion Valve (Y1E)
ESIE09-05 Troubleshooting by Indication on the Remote Controller “ ” AHU: Malfunction of Moving Part of Electronic Expansion Valve (Y1E) Remote Controller Display Applicable All AHU models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of moving part of electronic expansion valve Causes Defect of AHU PC board Defect of connecting cable...
Page 180 Troubleshooting by Indication on the Remote Controller ESIE09-05 ∗1: Coil check method for the moving part of the electronic expansion valve Discount the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1.
Page 181: Aj" Ahu: Malfunction Of Capacity Determination Device
ESIE09-05 Troubleshooting by Indication on the Remote Controller “ ” AHU: Malfunction of Capacity Determination Device Remote Controller Display Applicable All AHU models Models Method of Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the IC memory on the AHU PC board, and whether the value is normal or abnormal is Malfunction determined.
Page 182: C1" Ahu: Failure Of Transmission (Between Ahu Pc Board And Fan Pc Board)
Troubleshooting by Indication on the Remote Controller ESIE09-05 “ ” AHU: Failure of Transmission (Between AHU PC Board and Fan PC Board) Remote Controller Display Applicable FXMQ40~125P Models Method of Check the condition of transmission between indoor PC board (A1P) and PC board for fan Malfunction (A2P) using computer.
Page 183 ESIE09-05 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the connector between indoor PC board (A1P) and Connect the connector PC board for fan (A2P) accurately connected? accurately.
Page 184: C4" Ahu: Malfunction Of Thermistor (R2T) For Heat Exchanger
Troubleshooting by Indication on the Remote Controller ESIE09-05 “ ” AHU: Malfunction of Thermistor (R2T) for Heat Exchanger Remote Controller Display Applicable All AHU models Models Method of Malfunction detection is carried out by temperature detected by heat exchanger thermistor. Malfunction Detection Malfunction...
Page 185: C5" Ahu: Malfunction Of Thermistor (R3T) For Gas Pipes
ESIE09-05 Troubleshooting by Indication on the Remote Controller “ ” AHU: Malfunction of Thermistor (R3T) for Gas Pipes Remote Controller Display Applicable All AHU models Models Method of Malfunction detection is carried out by temperature detected by gas pipe thermistor. Malfunction Detection Malfunction...
Page 186: Board)
Troubleshooting by Indication on the Remote Controller ESIE09-05 3.10 “ ” AHU: Failure of Combination (Between AHU PC Board and Fan PC Board) Remote Controller Display Applicable FXMQ40~125P Models Method of Conduct open line detection with PC board for fan (A2P) using indoor PC board (A1P). Malfunction Detection Malfunction...
Page 187: C9" Ahu: Malfunction Of Thermistor (R1T) For Suction Air
ESIE09-05 Troubleshooting by Indication on the Remote Controller 3.11 “ ” AHU: Malfunction of Thermistor (R1T) for Suction Remote Controller Display Applicable AII AHU models Models Method of Malfunction detection is carried out by temperature detected by suction air temperature Malfunction thermistor.
Page 188: Ca" Ahu: Malfunction Of Thermistor For Discharge Air
Troubleshooting by Indication on the Remote Controller ESIE09-05 3.12 “ ” AHU: Malfunction of Thermistor for Discharge Air Remote Controller Display Applicable AII AHU models Models Method of Malfunction detection is carried out by temperature detected by discharge air temperature thermistor.
Page 189: Cc" Ahu: Malfunction Of Humidity Sensor System
ESIE09-05 Troubleshooting by Indication on the Remote Controller 3.13 “ ” AHU: Malfunction of Humidity Sensor System Remote Controller Display Applicable FXFQ Models Method of Even if a malfunction occurs, operation still continues. Malfunction Malfunction is detected according to the moisture (output voltage) detected by the moisture Detection sensor.
Page 190: Cj" Ahu: Malfunction Of Thermostat Sensor In Remote Controller
Troubleshooting by Indication on the Remote Controller ESIE09-05 3.14 “ ” AHU: Malfunction of Thermostat Sensor in Remote Controller Remote Controller Display Applicable AII AHU models Models Method of Malfunction detection is carried out by temperature detected by remote controller air Malfunction temperature thermistor.
Page 191: E1" Outdoor Unit: Pc Board Defect
Troubleshooting by Indication on the Remote Controller 3.15 “ ” Outdoor Unit: PC Board Defect Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.
Page 192: E3" Outdoor Unit: Actuation Of High Pressure Switch
ESIE09-05 3.16 “ ” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction Error is generated when the HPS activation count reaches the number specific to the operation Decision mode.
Page 193 ESIE09-05 Troubleshooting by Indication on the Remote Controller 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 stop valve open? 2 Is the HPS connector properly connected to the main PC board? 3 Does the high pressure switch have continuity?
Page 194: E4" Outdoor Unit: Actuation Of Low Pressure Sensor
ESIE09-05 3.17 “ ” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure.
Page 195 ESIE09-05 Troubleshooting by Indication on the Remote Controller 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. 2 Connect the Service Checker.
Page 196: E5" Inverter Compressor Motor Lock
Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Inverter PC board 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 197: E7" Malfunction Of Outdoor Unit Fan Motor
” Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction of fan motor system is detected according to the fan speed detected by hall IC when the fan motor runs.
Page 198: E9" Outdoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (Y1E, Y3E)
3.20 “ ” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y3E) Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Check disconnection of connector Malfunction Check continuity of expansion valve coil Detection Malfunction Error is generated under no common power supply when the power is on.
Page 199 ESIE09-05 Troubleshooting by Indication on the 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 200: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature
ESIE09-05 3.21 “ ” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Abnormality is detected according to the temperature detected by the discharge pipe Malfunction temperature sensor. Detection Malfunction When the discharge pipe temperature rises to an abnormally high level...
Page 201: F6" Outdoor Unit: Refrigerant Overcharged
Troubleshooting by Indication on the Remote Controller 3.22 “ ” Outdoor Unit: Refrigerant Overcharged Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Excessive charging of refrigerant is detected by using the heat exchanging deicer temperature during a check operation. Malfunction Detection...
Page 202: H9" Outdoor Unit: Malfunction Of Thermistor (R1T) For Outdoor Air
3.23 “ ” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Detection Malfunction When the outside air temperature thermistor has short circuit or open circuit.
Page 203: J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R2T)
Troubleshooting by Indication on the Remote Controller 3.24 “ ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T) Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature Malfunction thermistor. Detection Malfunction When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Page 204: J5" Outdoor Unit: Malfunction Of Thermistor (R3T, R5T) For Suction Pipe 1, 2
” Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for Suction Pipe 1, 2 Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2. Malfunction Detection Malfunction When a short circuit or an open circuit in the thermistor for suction pipe 1, 2 are detected.
Page 205: J6" Outdoor Unit: Malfunction Of Thermistor (R6T)
Troubleshooting by Indication on the Remote Controller 3.26 “ ” Outdoor Unit: Malfunction of Thermistor (R6T) Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the heat exchange thermistor is detected.
Page 206: J7" Outdoor Unit: Malfunction Of Thermistor (R7T) For Outdoor Unit Liquid Pipe
3.27 “ ” Outdoor Unit: Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected from the temperature detected by the liquid pipe thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the heat exchange thermistor is detected.
Page 207: J9" Outdoor Unit: Malfunction Of Thermistor (R4T)
Troubleshooting by Indication on the Remote Controller 3.28 “ ” Outdoor Unit: Malfunction of Thermistor (R4T) Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor. Malfunction Detection Malfunction When the subcooling heat exchanger gas pipe thermistor is short circuited or open.
Page 208: Ja" Outdoor Unit: Malfunction Of High Pressure Sensor
ESIE09-05 3.29 “ ” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models 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.
Page 209: Jc" Outdoor Unit: Malfunction Of Low Pressure Sensor
Troubleshooting by Indication on the Remote Controller 3.30 “ ” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected from pressure detected by low pressure sensor. Malfunction Detection Malfunction When the low pressure sensor is short circuit or open circuit.
Page 210: L1" Outdoor Unit: Malfunction Of Pc Board
” Outdoor Unit: Malfunction of PC Board Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Detect malfunctions by current value during waveform output before compressor startup. Detect malfunctions by current sensor value during synchronized operation at the time of Malfunction startup.
Page 211: L4" Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise
3.32 “ ” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction When the temperature of the inverter radiation fin increases above 83°C.
Page 212: L5" Outdoor Unit: Inverter Compressor Abnormal
ESIE09-05 3.33 “ ” Outdoor Unit: Inverter Compressor Abnormal Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When an excessive current flows in the power transistor.
Page 213: L8" Outdoor Unit: Inverter Current Abnormal
Troubleshooting by Indication on the Remote Controller 3.34 “ ” Outdoor Unit: Inverter Current Abnormal Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected.
Page 214: L9" Outdoor Unit: Inverter Start Up Error
ESIE09-05 3.35 “ ” Outdoor Unit: Inverter Start up Error Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected during startup...
Page 215: Lc" Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board
” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Check the communication state between inverter PC board and control PC board by micro- Malfunction computer.
Page 216: P1" Outdoor Unit: High Voltage Of Capacitor In Main Inverter Circuit
” Outdoor Unit: High Voltage of Capacitor in Main Inverter Circuit Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Malfunction is detected according to the voltage waveform of main circuit capacitor built in the Malfunction inverter.
Page 217: U0" Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure
” Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor and low pressure Malfunction saturation temperature.
Page 218 Troubleshooting by Indication on the Remote Controller ESIE09-05 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Low pressure Cooling is 0.25 MPa Out of gas, closing of stop valve or refrigerant system is or less.
Page 219: U2" Power Supply Insufficient Or Instantaneous Failure
Troubleshooting by Indication on the Remote Controller 3.39 “ ” Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
Page 220 Troubleshooting by Indication on the Remote Controller ESIE09-05 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Have the power supply voltages between L1 and L2, L2 and L3, and L1 and L3 fallen within the range of Correct the power supply 380 to 415V±10% (50 Hz) and between L...
Page 221: U3" Check Operation Not Executed
Troubleshooting by Indication on the Remote Controller 3.40 “ ” Check Operation not Executed Remote Controller Display Applicable ERQ 125 ~ 200 A7V1 Models Method of Check operation is executed or not Malfunction Detection Malfunction Malfunction is decided when the unit starts operation without check operation.
Page 222: U4" Malfunction Of Transmission Between Ahus And Outdoor Units
Remote Controller Display Applicable AII AHU models Models ERQ 125 ~ 200 A7V1 Method of Microcomputer checks if transmission between AHUs and outdoor units is normal. Malfunction Detection Malfunction When transmission is not carried out normally for a certain amount of time...
Page 223 ESIE09-05 Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to tu rn off power switch before connect or disconnect connecto r, Caution or pa rts damage m ay be occurred . the AHU or outdoor unit PC board been replaced, or has the AHU - outdoor Push and hold the RESET or outdoor - outdoor unit...
Page 224: U5" Malfunction Of Transmission Between Remote Controller And Ahu
Troubleshooting by Indication on the Remote Controller ESIE09-05 3.42 “ ” Malfunction of Transmission between Remote Controller and AHU Remote Controller Display Applicable AII AHU models Models Method of In case of controlling with 2-remote controller, check the system using microcomputer is signal Malfunction transmission between AHU and remote controller (main and sub) is normal.
Page 225: Ua" Excessive Number Of Ahus
ESIE09-05 Troubleshooting by Indication on the Remote Controller 3.43 “ ” Excessive Number of AHUs Remote Controller Display Applicable AII AHU models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Excess of connected AHUs Causes Defect of outdoor unit PC board (A1P) Mismatching of the refrigerant type of AHU and outdoor unit.
Page 226: Uf" System Is Not Set Yet
Troubleshooting by Indication on the Remote Controller ESIE09-05 3.44 “ ” System is not Set yet Remote Controller Display Applicable All models of AHUs Models RXYSQ4~6PA Method of On check operation, the number of AHUs in terms of transmission is not corresponding to that of AHUs that have made changes in temperature.
Page 227: Uh" Malfunction Of System, Refrigerant System Address Undefined
ESIE09-05 Troubleshooting by Indication on the Remote Controller 3.45 “ ” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable AII AHU models Models RXYSQ4~6PA Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper connection of transmission wiring between outdoor unit and outdoor unit outside Causes control adaptor Defect of AHU PC board...
Page 228: Troubleshooting By Indication On The Unified On/Off Controller
Troubleshooting by Indication on the Unified ON/OFF Controller ESIE09-05 4. Troubleshooting by Indication on the Unified ON/ OFF Controller Operation Lamp Blinks Remote Operation lamp blinks Controller Display Applicable All models of AHUs Models Unified ON/OFF controller Method of Malfunction Detection Malfunction Decision...
Page 229 ESIE09-05 Troubleshooting by Indication on the Unified ON/OFF Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is a malfunction code displayed on the Diagnose the cause with the remote controller? air conditioner’s failure diagnosis manual.
Page 230: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)
Troubleshooting by Indication on the Unified ON/OFF Controller ESIE09-05 Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink) Remote “under host computer integrated control” (Repeats single blink) Controller Display Applicable Unified ON/OFF controller Models Central controller, Schedule timer Method of Malfunction Detection Malfunction...
Page 231 ESIE09-05 Troubleshooting by Indication on the Unified ON/OFF Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Has a once connected optional controller for centralized Reset power supply control been disconnected simultaneously for all optional or itsaddress...
Page 232 Troubleshooting by Indication on the Unified ON/OFF Controller ESIE09-05 Is the wiring adaptor for Cannot be used in electrical appendices combination with a wiring connected? adaptor for electrical appendices. Remove the wiring adaptor for electrical appendices and reset the power supply for all optional controllers for centralized control simultaneously.
Page 233: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)
ESIE09-05 Troubleshooting by Indication on the Unified ON/OFF Controller Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) Remote “under host computer integrated control” (Repeats double blink) Controller Display Applicable Unified ON/OFF controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed...
Page 234 Troubleshooting by Indication on the Unified ON/OFF Controller ESIE09-05 [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 Conduct visual checks for pipe conditions.
Page 235 ESIE09-05 Troubleshooting by Indication on the Unified ON/OFF 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] Faulty low pressure sensor Are the electrical characteristics normal? (See *1.) Faulty compressor...
Page 236 Troubleshooting by Indication on the Unified ON/OFF Controller ESIE09-05 [CHECK 3] Check for Fan Motor Connector (1) Turn the power supply off. (2) With the fan motor connector on motor side disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table.
Page 237: Part 10 Appendix
ESIE09-05 Part 10 Appendix 1. Piping Diagrams..................228 1.1 Outdoor Unit ..................228 2. Wiring Diagrams..................229 2.1 Outdoor Unit ..................229 2.2 Field Wiring ..................230 3. Option List ...................231 4. Thermistor Resistance / Temperature Characteristics......232 5. Pressure Sensor .................234 6. Method of Replacing the Inverter’s Power Transistors Modules..235 : http://splitoff.ru/tehn-doc.html Appendix...
Page 238: Piping Diagrams
Piping Diagrams ESIE09-05 1. Piping Diagrams Outdoor Unit ERQ 100/125/140 A7V1B : http://splitoff.ru/tehn-doc.html Appendix...
Page 239: Wiring Diagrams
ESIE09-05 Wiring Diagrams 2. Wiring Diagrams Outdoor Unit ERQ 100/125/140 A7V1B : http://splitoff.ru/tehn-doc.html Appendix...
Page 240: Field Wiring
Wiring Diagrams ESIE09-05 Field Wiring ERQ 100/125/140 A7V1B : http://splitoff.ru/tehn-doc.html Appendix...
Page 241: Option List
ESIE09-05 Option List 3. Option List ERQA7V1B Item Type ERQ100 ERQ125 ERQ140 Cool/Heat Selector KRC19-26A6 Fixing Box KJB111A Central drain plug KKPJ5F180 Notes : All options are kits. : http://splitoff.ru/tehn-doc.html Appendix...
Page 242: Thermistor Resistance / Temperature Characteristics
Thermistor Resistance / Temperature Characteristics ESIE09-05 4. Thermistor Resistance / Temperature Characteristics For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air Outdoor unit for fin thermistor For suction pipe 1 For heat exchanger R4T, R6T For suction pipe 2 For Subcooling heat exchanger outlet R6T, R4T For Liquid pipe...
Page 243 ESIE09-05 Thermistor Resistance / Temperature Characteristics Outdoor Unit Thermistors for Discharge Pipe (R2T) (kΩ) T°C T°C T°C 640.44 624.65 72.32 70.96 13.35 13.15 609.31 594.43 69.64 68.34 12.95 12.76 579.96 565.78 67.06 65.82 12.57 12.38 552.00 538.63 64.60 63.41 12.20 12.01 525.63 512.97...
Page 244: Pressure Sensor
Pressure Sensor ESIE09-05 5. Pressure Sensor = 1.38V-0.69 : Detected Pressure [High Side] MPa = 0.57V-0.28 : Detected Pressure [Low Side] MPa : High pressure (MPa) : Output Voltage [High Side] V Detected Pressure : Low pressure (MPa) : Output Voltage [Low Side] V V : Voltage (V) High Pressure (P Low Pressure (P...
Page 245: Method Of Replacing The Inverter's Power Transistors Modules
• Multiple tester : Prepare the digital type of multiple tester with diode check function. <Preparation> • Turn OFF the power supply. Then, after a lapse of 10 minutes or more, make measurement of resistance. • To make measurement, disconnect all connectors and terminals. ERQ 100/125/140 A7V1B C– : http://splitoff.ru/tehn-doc.html Appendix...
Page 246 Method of Replacing the Inverter’s Power Transistors Modules ESIE09-05 Power module checking When using the digital type of multiple tester, make measurement in diode check mode. Tester terminal Criterion Remark Not less than 0.3V It may take time to (including ∞ )* determine the voltage due to capacitor charge or else.
Page 247: Part 11 Precautions For New Refrigerant (R-410A)
ESIE09-05 Part 11 Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........238 1.1 Outline ....................238 1.2 Refrigerant Cylinders................240 1.3 Service Tools..................241 : http://splitoff.ru/tehn-doc.html Precautions for New Refrigerant (R-410A)
Page 248: Precautions For New Refrigerant (R-410A)
Precautions for New Refrigerant (R-410A) ESIE09-05 1. Precautions for New Refrigerant (R-410A) Outline 1.1.1 About Refrigerant R-410A Characteristics of new refrigerant, R-410A 1. Performance Almost the same performance as R-22 and R-407C 2. Pressure Working pressure is approx. 1.4 times more than R-22 and R-407C. 3.
Page 249 ESIE09-05 Precautions for New Refrigerant (R-410A) Thermodynamic characteristic of R-410A Temperature Steam pressure Density Specific heat at constant Specific enthalpy Specific entropy (kPa) (kg/m pressure (kJ/kgK) (kJ/kg) (kJ/KgK) Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor : http://splitoff.ru/tehn-doc.html Precautions for New Refrigerant (R-410A)
Page 250: Refrigerant Cylinders
Precautions for New Refrigerant (R-410A) ESIE09-05 Refrigerant Cylinders Cylinder specifications • The cylinder is painted refrigerant color (pink). • The cylinder valve is equipped with a siphon tube. Cylinder Refrigerant can be charged in liquid state with cylinder in upright position. Caution: Do not lay cylinder on its side during charging, since it cause refrigerant in gas state to enter the system.
Page 251: Service Tools
ESIE09-05 Precautions for New Refrigerant (R-410A) Service Tools R-410A is used under higher working pressure, compared to previous refrigerants (R-22,R-407C). Furthermore, the refrigerating machine oil has been changed from Suniso oil to Ether oil, and if oil mixing is occurred, sludge results in the refrigerants and causes other problems.
Page 252 Precautions for New Refrigerant (R-410A) ESIE09-05 1. Flaring tool Flare gauge Specifications • Dimension A Unit:mm Tube O.D. −0.4 Nominal size Class-2 (R-410A) Class-1 (Conventional) 6.35 9.52 13.2 13.0 12.70 16.6 16.2 15.88 19.7 19.4 19.05 24.0 23.3 Differences • Change of dimension A Dimension A For class-1: R-407C For class-2: R-410A...
Page 253 ESIE09-05 Precautions for New Refrigerant (R-410A) 2. Torque wrench Specifications • Dimension B Unit:mm Nominal size Class-1 Class-2 Previous No change in tightening torque No change in pipes of other sizes Differences • Change of dimension B Only 1/2", 5/8" are extended For class-1: R-407C For class-2: R-410A Dimension B...
Page 254 Precautions for New Refrigerant (R-410A) ESIE09-05 4. Leak tester Specifications • Hydrogen detecting type, etc. • Applicable refrigerants R-410A, R-407C, R-404A, R-507A, R-134a, etc. Differences • Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen. 5.
Page 255 ESIE09-05 Precautions for New Refrigerant (R-410A) • Temperature scale indicates the relationship between pressure and temperature in gas saturated state. Differences • Change in pressure • Change in service port diameter 7. Charge hose for R-410A (Hose with ball valve) Specifications •...
Page 256 Precautions for New Refrigerant (R-410A) ESIE09-05 9. Weigher for refrigerant charge Specifications • High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g • Equipped with pressure-resistant sight glass to check liquid refrigerant charging. •...
Page 257 ESIE09-05 Index Fan PC Board) ..........172 Fan Motor (M1F) Lock, Overload ......167 A0 .................165 Field Setting ............92 A1 .................166 Field Setting from Outdoor Unit ......100 A6 .................167 Field Setting from Remote Controller ....92 A8 .................168 Freeze Prevention ..........
Page 258 ESIE09-05 Malfunction of System, Refrigerant System Address Stopping Operation ..........32 Undefined ............217 Symptom-based Troubleshooting ....... 151 Malfunction of Thermistor (R1T) for Suction Air ...177 System is not Set yet .......... 216 Malfunction of Thermistor (R2T) for Heat Exchanger .............174 Malfunction of Thermistor (R3T) for Gas Pipes ..175 Test Operation Malfunction of Thermistor (R3T, R5T) for Suction...
Page 259 ESIE09-05 Drawings & Flow Charts malfunction of low pressure sensor ..... 199 malfunction of moving part of electronic expansion abnormal discharge pipe temperature ....190 valve (20e) ........... 169 abnormal power supply voltage ......168 malfunction of moving part of electronic expansion actuation of high pressure switch ......182 valve (y1e, y3e) ..........
Page 260 ESIE09-05 thermostat sensor in remote controller ....38 cooling .............38 heating .............39 torque wrench ............243 troubleshooting by remote controller ....154 turn power on ............84 weigher for refrigerant charge ......246 wired remote controller ...........92 wiring diagrams ............229 : http://splitoff.ru/tehn-doc.html Drawings & Flow Charts...

Daikin ERQ Service Manual

Table of Contents

Part 1 General Information

1 Model Names of Outdoor Units, Control Box and Expansion Valve Kit

2 Combination Table

Part 2 Specifications

Part 3 List of Electrical and Functional Parts

Part 4 Refrigerant Circuit

1 Refrigerant Circuit

2 Functional Parts Layout

Part 5 Function

1 Operation Mode

2 Basic Control

3 Special Control

4 Protection Control

5 Other Control

6 Outline of Control

Part 6 Control Box Ekeq - Cbv3

1 Different Systems with Their Control Boxes

2 X, Y, Z Control

3 Wiring Diagram of Control Box

4 Attention Points

5 System A: EKEQF & EKEQD-Box: Installation and Operation Manual.55

6 System B: EKEQM-Box: Installation and Operation Manual

Part 7 Test Operation

1 Test Operation

2 Outdoor Unit PC Board Layout

3 Field Setting

Part 8 Installation and Operation Manual

Installation Manual

1 Safety Considerations

2 Introduction

3 Before Installation

4 Selecting Installation Site

5 Precautions on Installation

6 Installation Servicing Space

7 Refrigerant Pipe Size and Allowable Pipe Length

8 Precautions on Refrigerant Piping

9 Refrigerant Piping

10 Additional Refrigerant Charge

11 Electrical Wiring Work

12 Before Operation

13 Service Mode Operation

14 Caution for Refrigerant Leaks

15 Disposal Requirements

Operation Manual

Part 9 Troubleshooting

Symptom-Based Troubleshooting

Troubleshooting by Remote Controller

Troubleshooting by Indication on the Remote Controller

Troubleshooting by Indication on the Unified ON/OFF Controller

Part 10 Appendix

Part 11 Precautions for New Refrigerant (R-410A)

Quick Links

Service Manual

Chapters

Troubleshooting

Related Manuals for Daikin ERQ

Summary of Contents for Daikin ERQ