Daikin VRV IV+ Service Manual
  1. Manuals
  2. Brands
  3. Daikin Manuals
  4. Heat Pump
  5. VRV IV+
  6. Service manual

Daikin VRV IV+ Service Manual

Hide thumbs Also See for VRV IV+:
Table of Contents

Advertisement

Quick Links

https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin
Service manual
VRV IV+ Heat Pump
RYYQ8U7Y1B*
RYYQ10U7Y1B*
RYYQ12U7Y1B*
RYYQ14U7Y1B*
RYYQ16U7Y1B*
RYYQ18U7Y1B*
RYYQ20U7Y1B*
RYMQ8U7Y1B*
RYMQ10U7Y1B*
RYMQ12U7Y1B*
RYMQ14U7Y1B*
RYMQ16U7Y1B*
RYMQ18U7Y1B*
RYMQ20U7Y1B*
RXYQ8U7Y1B*
RXYQ10U7Y1B*
RXYQ12U7Y1B*
RXYQ14U7Y1B*
RXYQ16U7Y1B*
Service manual
RXYQ18U7Y1B*
English
VRV IV+ Heat Pump
RXYQ20U7Y1B*

Advertisement

Table of Contents
loading

Related Manuals for Daikin VRV IV+

Summary of Contents for Daikin VRV IV+

  • Page 1 Service manual VRV IV+ Heat Pump RYYQ8U7Y1B* RYYQ10U7Y1B* RYYQ12U7Y1B* RYYQ14U7Y1B* RYYQ16U7Y1B* RYYQ18U7Y1B* RYYQ20U7Y1B* RYMQ8U7Y1B* RYMQ10U7Y1B* RYMQ12U7Y1B* RYMQ14U7Y1B* RYMQ16U7Y1B* RYMQ18U7Y1B* RYMQ20U7Y1B* RXYQ8U7Y1B* RXYQ10U7Y1B* RXYQ12U7Y1B* RXYQ14U7Y1B* RXYQ16U7Y1B* Service manual RXYQ18U7Y1B* English VRV IV+ Heat Pump RXYQ20U7Y1B*...
  • Page 2 Disclaimer The present publication is drawn up by way of information only and does not constitute an offer binding upon Daikin Europe N.V.. Daikin Europe N.V. has compiled the content of this publication to the best of its knowledge. No express or implied warranty is given for the completeness, accuracy, reliability or fitness for particular purpose of its content and the products and services presented therein.
  • Page 3 Version log Version log Version code Description Date ESIE18-14 Document release July 2019 RYYQ+RYMQ+RXYQ8~20U7Y1B Service manual VRV IV+ Heat Pump ESIE18-14 – 2019.07...

  • Page 4: Table Of Contents

    Table of contents 2.3.41 J3-18-24-30 – Discharge thermistor R22T open Table of contents circuit................28 2.3.42 J3-19-25-31 – Discharge thermistor R22T short circuit................29 2.3.43 J3-38-42-44 – Compressor body thermistor R9T 1 General operation open circuit..............29 2.3.44 J3-39-43-45 – Compressor body thermistor R9T 2 Troubleshooting short circuit..............
  • Page 5 Table of contents 2.3.86 L9-13-14-15 – Inverter PCB A3P output phase 2.3.130 U7-01 – Transmission abnormality between systems abnormality ..............44 - DTA104A61,62 error..........59 2.3.87 L9-16-17-18 – Inverter PCB A6P output phase 2.3.131 U7-02 – Transmission abnormality between systems abnormality ..............
  • Page 6 Table of contents 2.4.8 Symptom: White mist comes out of a unit (Indoor 3.16.1 Checking procedures ...........126 unit, heat exchanger unit) ........... 73 3.16.2 Repair procedures ............127 2.4.9 Symptom: The user interface display reads "U4" or 3.17 Thermistors ................128 "U5"...

  • Page 7: General Operation

    1 General operation General operation The VRV IV+ hp outdoor unit is a heat pump used for cooling or heating in commercial applications. Outdoor units The outdoor unit consists of: ▪ 1 or 2 inverter compressor(s) ▪ A switchbox containing necessary PCBs ▪...
  • Page 8 1 General operation Indoor Units The below illustration does not reflect allowed combinations or compatibility. The intention is to give an overview on piping installation for different types of units. VRV IV+ hp outdoor unit Refnet BHFQ22P for Outdoor multi connection...

  • Page 9: Troubleshooting

    2 Troubleshooting Troubleshooting To access push buttons and 7- segment display 1 Remove the service plate, see "3.13 Plate work" on page 118. Result: The push buttons and 7-segment display are located on A1P behind the service plate. 2 Press the middle button (b) to return to the home screen.

  • Page 10: Via The Outdoor Unit

    For more details on the Madoka Assistant please refer to the BRC1H In case of an error or warning, the operation lamp on the ON/OFF training course material which is available on the Daikin Business Button (a) will blink and an error message (b) or warning (c) will be Portal.

  • Page 11: Via The Wireless Controller Brc4/7

    2 Troubleshooting “UP” button “DOWN” button 8 Continue to change until the matching buzzer sound*** is 4 Choose “RC Error History” or “Indoor Unit Error History” and generated. confirm with the Menu/Enter button (d). Result: Possible buzzer sounds***: ▪ Continuous buzzer; both digits (f and g) match with the error code.

  • Page 12: Error Based Troubleshooting

    2 Troubleshooting 7 While in field settings mode, press TEST button (d) for 5 2.3.2 E1-02 – Outdoor unit main PCB A1P error seconds. Trigger Effect Reset Result: Mode 40 is accessed. Defected main PCB. Unit will stop Manual reset via user 8 Push the temperature set button (f) to change the History No.

  • Page 13: E2-06-07-08 - Open Circuit On Earth Leakage

    2 Troubleshooting Possible cause: Humidity in the refrigerant circuit. Trigger Effect Reset High pressure switch Unit will stop If field setting 2-15=1 INFORMATION opens due to high operating. (default): When If all procedures listed above have been performed and the pressure >safety...

  • Page 14: E3-02-04-06 - High Pressure Error

    2 Troubleshooting 2.3.6 E3-02-04-06 – High pressure error INFORMATION If all procedures listed above have been performed and the Main error code Sub error code Unit problem is still present, contact the helpdesk. Main Sub 1 2.3.7 E3-07 – High pressure switch reset error...

  • Page 15: E3-18 - Actuation Of High Pressure Switch During Test Run

    2 Troubleshooting 5 Check if the refrigerant circuit is clogged. See "4.2  Refrigerant Possible cause: Closed stop valve in the refrigerant circuit. circuit" on page 133. 2 Perform a check of the refrigerant high pressure sensor. See Possible cause: Clogged refrigerant circuit.

  • Page 16: E5-01-02-03 - Compressor Overload Error

    2 Troubleshooting 11 Check the F1‑F2 transmission line between the indoor units and INFORMATION outdoor unit. See "4.1 Electrical circuit" on page 130. Main, Sub 1 and Sub 2 indications are relevant in multiple Possible cause: Faulty or interruption in transmission line outdoor unit configurations.

  • Page 17: E5-07-08-09 - Compressor Overload Error

    2 Troubleshooting 10 Perform a check of the 4‑way valve. See "3.1 4-way valve" on 7 Perform a check of the compressor. See "3.2  Compressor"  on page 77. page 82. Possible cause: Faulty 4‑way valve. Possible cause: Faulty compressor. 11 Perform a check of the discharge pipe thermistor. See 8 Check liquid back issue.

  • Page 18: E6-18-20-22 - Inverter Overcurrent Error

    2 Troubleshooting 2 Perform a check of the refrigerant low pressure sensor. See 3 Connect a pressure gauge to both high and low pressure "3.16 Refrigerant low pressure sensor" on page 126 service ports and read the high and low refrigerant pressure.

  • Page 19: E7-02-14-26 - Outdoor Unit Fan Motor M2F Error

    2 Troubleshooting INFORMATION Trigger Effect Reset Overcurrent detected Unit will stop Manual reset via user If all procedures listed above have been performed and the on outdoor unit fan operating. interface. problem is still present, contact the helpdesk. motor M1F.

  • Page 20: E7-10-22-34 - Fan Inverter Pcb A7P (Integrated Power Module) Overheated

    2 Troubleshooting Possible cause: Insufficient air flow or air by‑pass due to INFORMATION required space specifications not met. Main, Sub 1 and Sub 2 indications are relevant in multiple outdoor unit configurations. Main outdoor unit is the unit to 3 Clean the outdoor heat exchanger.

  • Page 21: E9-03-06-09 - Expansion Valve Y2E Abnormality

    2 Troubleshooting Possible cause: Possible cause: ▪ Faulty or disturbance of the power supply (imbalance ▪ Faulty or disturbance of the power supply (imbalance >10%), >10%), ▪ Power drop, ▪ Power drop, ▪ Short circuit. ▪ Short circuit. 7 Perform a power reset. If the error disappears and is raised 7 Perform a power reset.

  • Page 22: E9-20-21-22 - Failure Detection On Y1E

    2 Troubleshooting Possible cause: Possible cause: ▪ Faulty or disturbance of the power supply (imbalance ▪ Faulty or disturbance of the power supply (imbalance >10%), >10%), ▪ Power drop, ▪ Power drop, ▪ Short circuit. ▪ Short circuit. 7 Perform a power reset. If the error disappears and is raised 7 Perform a power reset.

  • Page 23: E9-26-27-28 - Expansion Valve Y4E Abnormality

    2 Troubleshooting 6 Check if the power supply is conform with the regulations. See Possible cause: "4.1 Electrical circuit" on page 130. ▪ Faulty or disturbance of the power supply (imbalance >10%), Possible cause: ▪ Power drop, ▪ Faulty or disturbance of the power supply (imbalance ▪...

  • Page 24: E9-51-52-53 - Expansion Valve Thermal Cutting Error

    2 Troubleshooting Possible cause: Possible cause: ▪ Faulty or disturbance of the power supply (imbalance ▪ Faulty or disturbance of the power supply (imbalance >10%), >10%), ▪ Power drop, ▪ Power drop, ▪ Short circuit. ▪ Short circuit. 7 Perform a power reset. If the error disappears and is raised 7 Perform a power reset.

  • Page 25: F3-01-03-05 - Compressor Discharge Temperature Too High

    2 Troubleshooting Possible cause: Possible cause: Faulty main expansion valve. ▪ Faulty or disturbance of the power supply (imbalance 7 Perform a check of the expansion valve(s) of the indoor unit(s). >10%), See service manual of the respective indoor unit(s) for more ▪...

  • Page 26: F4-01 - Wet Operation Caution

    2 Troubleshooting 2.3.34 F6-02 – Refrigerant overcharge detection INFORMATION during test-run If all procedures listed above have been performed and the problem is still present, contact the helpdesk. Trigger Effect Reset Discharge superheat Unit will stop test run. Push BS3 (return) 2.3.33...

  • Page 27: A3P

    2 Troubleshooting To solve the error code 2.3.35 H3-02-04-06 – Transmission error on inverter PCB A3P INFORMATION It is recommended to perform the checks in the listed Main error code Sub error code Unit order. Main 1 Check transmission wire between connector X61A on main Sub 1 PCB and connector X6A on inverter PCB A6P.

  • Page 28: Defrost Fail Alarm

    2 Troubleshooting 2 Perform a check of the main PCB. See "3.9  Main PCB"  on 2.3.38 HA-00 – Defrost fail alarm page 106. Trigger Effect Reset Possible cause: Faulty main PCB. When outdoor unit Unit keeps running. Auto reset. INFORMATION judges defrost is not completed.

  • Page 29: J3-19-25-31 - Discharge Thermistor R22T Short Circuit

    2 Troubleshooting 2.3.43 J3-38-42-44 – Compressor body Trigger Effect Reset thermistor R9T open circuit Compressor (M2C) Unit will stop Manual reset via user discharge thermistor operating. interface. Main error code Sub error code Unit R22T open circuit or Automatic reset when out of range.

  • Page 30: J3-47-49-51 - Compressor Body Thermistor R8T Open Circuit

    2 Troubleshooting 1 Perform a check of the compressor body thermistors. See Trigger Effect Reset "3.17 Thermistors" on page 128. Compressor (M1C) Unit will stop Manual reset via user Possible cause: Faulty compressor body thermistor or body temperature operating. interface. connector fault.

  • Page 31: J3-59-60-61 - Discharge Thermistor Crosswired

    2 Troubleshooting 5 Perform a check of the main PCB. See "3.9  Main PCB"  on Trigger Effect Reset page 106. Suction (accumulator) Unit will stop Manual reset via user Possible cause: Faulty main PCB. temperature operating. interface. thermistor R3T short/ Automatic reset when 6 Check if the refrigerant circuit is correctly charged.

  • Page 32: J7-06-07-08 - Liquid Thermistor R5T Abnormality

    2 Troubleshooting To solve the error code 2.3.51 J7-06-07-08 – Liquid thermistor R5T abnormality INFORMATION It is recommended to perform the checks in the listed Main error code Sub error code Unit order. Main Perform a check of the refrigerant liquid thermistor of the Sub 1 outdoor heat exchanger.

  • Page 33: Ja-07-09-11 - High Pressure Sensor S1Nph Malfunction

    2 Troubleshooting INFORMATION INFORMATION Main, Sub 1 and Sub 2 indications are relevant in multiple If all procedures listed above have been performed and the outdoor unit configurations. Main outdoor unit is the unit to problem is still present, contact the helpdesk.

  • Page 34: L1-01-07-11 - Inverter Pcb A3P Abnormality

    2 Troubleshooting To solve the error code 2.3.59 L1-02-08-12 – Inverter PCB A3P current detection primary circuit INFORMATION It is recommended to perform the checks in the listed Main error code Sub error code Unit order. Main 1 Perform a check of the refrigerant low pressure sensor. See Sub 1 "3.16 Refrigerant low pressure sensor" on page 126...

  • Page 35: L1-04-10-14 - Power Transistor Error On Inverter Pcb A3P

    2 Troubleshooting Possible cause: Faulty inverter PCB A3P or non‑compatible Trigger Effect Reset inverter PCB. Main PCB detects Unit will stop Manual reset via user voltage/current errors operating. interface. 3 Perform a check of the compressor. See "3.2  Compressor"  on on output waveform page 82.

  • Page 36: L1-17-22-42 - Inverter Pcb A6P Abnormality

    2 Troubleshooting 2.3.63 L1-17-22-42 – Inverter PCB A6P Trigger Effect Reset abnormality Main PCB detects Unit will stop Manual reset via user voltage/current errors operating. interface. Main error code Sub error code Unit on output waveform Power reset at or current read-out.

  • Page 37: L1-20-25-45 - Power Transistor Error On Inverter Pcb A6P

    2 Troubleshooting Possible cause: Faulty inverter PCB A6P or non‑compatible 2.3.67 L1-21-26-46 – Inverter PCB A6P hardware inverter PCB. fault 3 Perform a check of the compressor. See "3.2  Compressor"  on Main error code Sub error code Unit page 82.

  • Page 38: L1-29-33-35 - Fan Inverter Pcb A7P Eeprom Error

    2 Troubleshooting Trigger Effect Reset INFORMATION Fan inverter PCB Unit will stop Manual reset via user Main, Sub 1 and Sub 2 indications are relevant in multiple A4P fails reading/ operating. interface. outdoor unit configurations. Main outdoor unit is the unit to writing memory which F1‑F2 IN transmission line is connected.

  • Page 39: L1-47-49-51 - Inverter Pcb A3P 16 V Dc Abnormal

    2 Troubleshooting 2.3.72 L1-47-49-51 – Inverter PCB A3P 16 V DC Trigger Effect Reset abnormal Main PCB detects Unit will stop Manual reset via user voltage/current errors operating. interface. Main error code Sub error code Unit on output waveform Power reset at or current read-out.

  • Page 40: L2-04-05-06 - Power Supply Abnormality During Normal Operation

    2 Troubleshooting Possible cause: Faulty main PCB. INFORMATION Main PCB checks L1‑N on connector X1A for sinus 3 Perform a check of the inverter PCB(s). See "3.8  Inverter waveform each time crossing the zero‑line. Interval PCB" on page 99. between each zero‑crossing is 10  miliseconds when the Possible cause: Faulty inverter PCB(s).

  • Page 41: L4-07-19-21 - Fan Inverter Pcb A7P High Fin Temperature

    2 Troubleshooting Possible cause: Faulty main PCB. Trigger Effect Reset Fan inverter PCB Unit will stop Manual reset via user 5 Check that the silicon grease is applied properly on the A4P detects high fin operating. interface. radiation fin of the outdoor unit PCB. Adjust if needed.

  • Page 42: L5-03-05-07 - Output Overcurrent Detection On Inverter Pcb A3P

    2 Troubleshooting 2.3.80 L5-03-05-07 – Output overcurrent INFORMATION detection on inverter PCB A3P Main, Sub 1 and Sub 2 indications are relevant in multiple outdoor unit configurations. Main outdoor unit is the unit to Main error code Sub error code Unit which F1‑F2 IN transmission line is connected.

  • Page 43: L8-11-12-13 - Overcurrent On Inverter Pcb A6P Except Start-Up

    2 Troubleshooting To solve the error code Trigger Effect Reset Inverter PCB A3P Unit will stop Manual reset via user INFORMATION detects overcurrent to operating. interface. It is recommended to perform the checks in the listed compressor except order.

  • Page 44: L9-10-11-12 - Stall Prevention By Inverter Pcb A6P

    2 Troubleshooting Possible cause: INFORMATION ▪ Faulty or disturbance of the power supply (imbalance If all procedures listed above have been performed and the >10%), problem is still present, contact the helpdesk. ▪ Power drop, ▪ Short circuit. 2.3.86 L9-13-14-15 –...

  • Page 45: Transmission Abnormality

    2 Troubleshooting Trigger Effect Reset INFORMATION When inverter PCB Unit will stop Manual reset via user If all procedures listed above have been performed and the A6P detects phase operating. interface. problem is still present, contact the helpdesk. loss to compressor on U, V, W.

  • Page 46: Lc-24-25-26 - Transmission Abnormality Main Pcb

    2 Troubleshooting INFORMATION Trigger Effect Reset No transmission Unit will stop Automatic reset. Main, Sub 1 and Sub 2 indications are relevant in multiple between main PCB operating. outdoor unit configurations. Main outdoor unit is the unit to and fan inverter PCB which F1‑F2 IN transmission line is connected.

  • Page 47: P1-01-02-03 - Open Phase Or Unbalanced Power Supply Detection By Inverter Pcb A3P

    2 Troubleshooting 1 Check if the power supply is conform with the regulations. See Trigger Effect Reset "4.1 Electrical circuit" on page 130. No transmission Unit will stop Automatic reset. between main PCB operating. Possible cause: and inverter PCB ▪ Faulty or disturbance of the power supply (imbalance A6P .

  • Page 48: P4-01-04-05 - Fin Thermistor Abnormality On Inverter Pcb A3P

    2 Troubleshooting To solve the error code INFORMATION If all procedures listed above have been performed and the INFORMATION problem is still present, contact the helpdesk. It is recommended to perform the checks in the listed order. 2.3.97 P4-02-15-17 – Fin thermistor abnormality...

  • Page 49: P4-06-07-08 - Fin Thermistor Abnormality On Inverter Pcb A6P

    2 Troubleshooting 2 Perform a check of the liquid cooling expansion valve. See Trigger Effect Reset "3.5 Expansion valve" on page 89. Fan inverter PCB Unit will stop Manual reset via user A7P detects high operating. interface. Possible cause: Faulty liquid cooling expansion valve.

  • Page 50: No Refrigerant In Refrigerant Cylinder During Auto-Charge

    2 Troubleshooting 2.3.102 PA-00 – No refrigerant in refrigerant 2.3.105 PJ-04-05-06 – Capacity setting mismatch cylinder during auto-charge for inverter PCB A3P Trigger Effect Reset Main error code Sub error code Unit Main Sub 1 To solve the error code...

  • Page 51: Pj-10-17-18 - Capacity Setting Mismatch For Fan

    2 Troubleshooting To solve the error code 2.3.108 PJ-12-13-14 – Capacity setting mismatch for inverter PCB A6P INFORMATION It is recommended to perform the checks in the listed Main error code Sub error code Unit order. Main 1 Check if the correct spare part is installed for the main PCB.

  • Page 52: 2.3.110 U0-06 - Refrigerant Shortage Detection

    2 Troubleshooting Possible cause: Faulty refrigerant low pressure sensor. Possible cause: Non‑condensables and/or humidity in the refrigerant circuit. 4 Perform a check of the suction pipe thermistor. See "3.17 Thermistors" on page 128. 7 Check if the refrigerant circuit is correctly charged. See "4.2 Refrigerant circuit" on...

  • Page 53: 2.3.112 U1-01-05-07 - Reverse Phase Detection

    2 Troubleshooting 7 Check if the refrigerant circuit is correctly charged. See 2.3.113 U1-04-06-08 – Reverse phase detection "4.2 Refrigerant circuit" on page 133. Main error code Sub error code Unit Possible cause: Refrigerant shortage. Main 8 Perform a check of the refrigerant high pressure sensor. See Sub 1 "3.15 Refrigerant high pressure sensor" on...

  • Page 54: U2-02-09-12 - Inverter Circuit Power Supply Abnormality - Inverter Pcb A3P Phase Loss

    2 Troubleshooting Trigger Effect Reset Trigger Effect Reset Inverter PCB A3P Unit will stop Power reset at Inverter PCB A3P Unit will stop Power reset at detects DC voltage operating. outdoor unit. detects DC voltage operating. outdoor unit. cannot reach or...

  • Page 55: U2-22-25-28 - Inverter Circuit Power Supply Abnormality - Inverter Pcb A6P Abnormal Voltage

    2 Troubleshooting Trigger Effect Reset Trigger Effect Reset Inverter PCB A3P Unit will stop Power reset at Inverter PCB A6P Unit will stop Power reset at detects DC voltage operating. outdoor unit. detects DC voltage operating. outdoor unit. cannot reach or...

  • Page 56: U2-24-27-30 - Inverter Circuit Power Supply Abnormality - Inverter Pcb A6P Dc Circuit Not Charging

    2 Troubleshooting Trigger Effect Reset Trigger Effect Reset Inverter PCB A6P Unit will stop Power reset at Inverter PCB A6P Unit will stop Power reset at detects DC voltage operating. outdoor unit. detects DC voltage operating. outdoor unit. cannot reach or...

  • Page 57: 2.3.121 U3-03 - Test Run Not Performed Yet

    2 Troubleshooting than expected, communication between 1 or more indoor unit(s) Possible cause: Faulty or interruption in transmission line and outdoor unit is NOT correct. Check the F1‑F2 transmission between indoor units and outdoor unit. line between the indoor unit and outdoor unit, see "4.1 Electrical...

  • Page 58: U3-07 - Transmission Abnormality On Test Run

    2 Troubleshooting Possible cause: Faulty or interruption in transmission line Possible cause: Faulty or interruption in transmission line between indoor units and outdoor unit. between indoor units and outdoor unit. 2 Check the F1‑F2 transmission line between the indoor units and 2 Check the F1‑F2 transmission line between the indoor units and...

  • Page 59: U4-15 - Unable To Start Test Run

    2 Troubleshooting To solve the error code 2 Check field setting 1‑10 to count the indoor units, see "6.9 Field settings"  on page  188. If less indoor units detected than it INFORMATION should be, check the indoor unit(s) that have power black‑out or malfunctioning PCB.

  • Page 60: U7-03 - Transmission Abnormality Between Main

    2 Troubleshooting To solve the error code 2.3.133 U7-04 – Transmission abnormality between main outdoor unit and sub 2 INFORMATION outdoor unit It is recommended to perform the checks in the listed order. Trigger Effect Reset 1 Check if multiple units are wired to the same cool/heat zone Main PCB on main Forced stop.

  • Page 61: 2.3.135 U7-06 - Multi System Address Abnormality

    2 Troubleshooting 5 Check that ONLY the master outdoor unit has F1‑F2 IN 2.3.137 U7-11 – Excess indoor units detected on connection. If another outdoor unit has F1‑F2 IN connection, test run correct the installation. Trigger Effect Reset INFORMATION Test run detects more Forced stop.

  • Page 62: 2.3.140 Ua-00 - Combination Abnormality

    2 Troubleshooting To solve the error code To solve the error code INFORMATION INFORMATION It is recommended to perform the checks in the listed It is recommended to perform the checks in the listed order. order. 1 Check the indoor units for error codes other than U9‑01. See 1 Change the installation with ONLY R410A type indoor units.

  • Page 63: Combination Abnormality - Outdoor Unit Not Compatible With Indoor Units (Refrigerant Type)

    2 Troubleshooting To solve the error code 2.3.144 UA-18 – Combination abnormality - Outdoor unit not compatible with indoor INFORMATION units (refrigerant type) It is recommended to perform the checks in the listed order. Trigger Effect Reset 1 Check for improper combination of units. See the combination Main PCB on main Forced stop.

  • Page 64: Combination Abnormality - Altherma Hydro Unit Detected

    2 Troubleshooting 2.3.152 UF-01 – Wiring and piping mismatch - INFORMATION Auto address inconsistency on F1-F2 If all procedures listed above have been performed and the transmission problem is still present, contact the helpdesk. Trigger Effect Reset 2.3.149 UA-38 – Combination abnormality - Minimum 1 indoor Forced stop.

  • Page 65: Wiring And Piping Mismatch - Excess Connection Ratio

    2 Troubleshooting 3 Set field setting 2‑5 of the outdoor unit to 1 to start the indoor INFORMATION units connected to that outdoor unit on forced fan operation, If all procedures listed above have been performed and the "6.9 Field settings" on page 188.

  • Page 66: Refrigerant Leak Check Cannot Be Performed - Indoor Air Temperature Is Out Of Range

    2 Troubleshooting To solve the error code INFORMATION If all procedures listed above have been performed and the INFORMATION problem is still present, contact the helpdesk. It is recommended to perform the checks in the listed order. 2.3.159 E-4 – Refrigerant leak check is interrupted 1 Change field setting 2–14.

  • Page 67: Ok - Refrigerant Leak Check Function Detects No Refrigerant Leak

    2 Troubleshooting 2 Indoor and/or outdoor temperature(s) of test run and latest leak check function should NOT differ too much. Consult the logbook and compare temperatures to auto‑charge time. Perform a new leak test when the indoor and outdoor temperatures do NOT deviate too much compared to the time of test run.

  • Page 68: 2.3.163 Indoor Unit Related Error Codes

    2 Troubleshooting 2.3.163 Indoor unit related error codes Error code Description A0-00 Main PCB error A1-00 EEPROM error on main PCB A3-00 Float switch open during thermo ON in cooling mode A6-01 Fan motor locked A6-10 Fan motor overcurrent...

  • Page 69: 2.3.164 Overview Of Error Codes

    2 Troubleshooting 2.3.164 Overview of error codes Main Sub code Description code Main Sub 1 Sub 2 Outdoor Unit Main PCB [A1P] Error Outdoor Unit Main PCB [A1P] Error Current Leak Detection Open Circuit on Earth Leakage Detection Core...
  • Page 70 2 Troubleshooting Main Sub code Description code Main Sub 1 Sub 2 Gas Temperature Thermistor Malfunction High Pressure Sensor (S1NPH) Open Circuit or Out of Range High Pressure Sensor (S1NPH) Short Circuit or Out of Range Low Pressure Sensor (S1NPL) Open Circuit or Out of Range...
  • Page 71 2 Troubleshooting Main Sub code Description code Main Sub 1 Sub 2 Capacity Setting Mismatch for Inverter PCB A3P Capacity Setting Mismatch for Fan Inverter PCB A4P Capacity Setting Mismatch for Fan Inverter PCB A7P Capacity Setting Mismatch for Inverter PCB A6P...
  • Page 72 2 Troubleshooting Main Sub code Description code Main Sub 1 Sub 2 Refrigerant Leak Check cannot be performed - Indoor Air Temperature is out of range. Refrigerant Leak Check cannot be performed - Outdoor Air Temperature is out of range.

  • Page 73: Symptom Based Troubleshooting

    2 Troubleshooting Symptom based troubleshooting ▪ When the cool/heat changeover remote control switch is installed 2.4.1 Normal operating conditions and the display shows (change-over under centralized Below items are a guideline on how to check normal operating control), this is because cool/heat changeover is controlled by the conditions of the unit.

  • Page 74: Symptom: Noise Of Air Conditioners (Indoor Unit, Outdoor Unit)

    2 Troubleshooting ▪ A continuous low "shah" sound is heard when the system is in cooling operation or at a stop. When the drain pump (optional accessories) is in operation, this noise is heard. ▪ A "pishi-pishi" squeaking sound is heard when the system stops after heating operation.

  • Page 75: Symptom: Unit Operation Problems

    2 Troubleshooting 2.4.20 Symptom: Unit operation problems Symptom Possible failure Root cause Repair Unit(s) do not operate Unit(s) do not operate Missing or abnormal power supply Check Power Supply. See (reverse phase, missing phase, "4.1 Electrical circuit" on page 130 abnormal voltage…) to the outdoor...

  • Page 76: Other Symptoms

    2 Troubleshooting Symptom Possible failure Root cause Repair Disturbing operation noise and Faulty Inverter PCB output Instable output voltage from Check Power Supply, see vibration inverter PCB to compressor(s) "4.1 Electrical circuit" on page 130. Restore the power supply in conform with the requirements.

  • Page 77: Components

    3 Components Result: The measured voltage MUST be 230 V AC. Components 7 De-activate Heating and activate Cooling operation via the Cool/Heat master user interface. 4-way valve 8 Measure the voltage on the 4‑way valve connection on the PCB. 3.1.1 Main 4-way valve Result: The measured voltage MUST be 0 V AC.
  • Page 78 3 Components 6 Check with a contact thermometer (or by touching) if the flow RYYQ-U units: through the 4-way valve corresponds with the flow shown in the ▪ Cooling mode flow diagram. (See "6.3 Piping diagram" on page 148). ▪ Oil return operation in cooling mode...
  • Page 79 3 Components Prerequisite: Remove the required plate work, see "3.13  Plate CAUTION work" on page 118. Overheating the valve will damage or destroy it. Prerequisite: If needed, remove any parts to create more space for the removal of the 4‑way valve coil.

  • Page 80: Sub 4-Way Valve

    3 Components 3.1.2 Sub 4-way valve Is the measured voltage Action correct? Checking procedures Perform a position check of the 4-way valve, see "Checking INFORMATION procedures" on page 77. It is recommended to perform the checks in the listed Perform a check the main PCB, order.
  • Page 81 3 Components 5 Wait for the 4‑way valve to switch to another operation mode (service monitoring tool) with opposite 4‑way valve energizing conditions as the current operation mode and again perform an electrical check and a position check of the 4‑way valve, see "Checking procedures" on...

  • Page 82: Compressor

    3 Components A mechanical lock is present Action on the compressor? Replace the compressor, see "3.2.2 Repair procedures" on page 84. Perform an mechanical check of the compressor, see "3.2.1 Checking procedures" on page 82. To perform a mechanical check of the compressor 1 First perform an auditive check of the compressor, see "3.2.1 Checking procedures" on...
  • Page 83 3 Components DANGER: RISK OF ELECTROCUTION Unit Compressor Winding resistance value (at Confirm rectifier voltage is below 10  V  DC before temperature of proceeding. 20°C) 4 Remove the cover of the compressor wire terminals. RYYQ8~12, 0.26 Ω±5% RXYQ8~12, RYMQ8~12 RYYQ14~16, M1C + M2C 0.77 Ω±5%...

  • Page 84: Repair Procedures

    3 Components 3.2.2 Repair procedures To remove the transportation stay Only for 14~20 HP NOTICE If the unit is operated with the transportation stay attached, abnormal vibration or noise may be generated. The transportation stay installed over the compressor leg for protecting the unit during transport must be removed.
  • Page 85 3 Components 3 Disconnect the Faston connectors from the compressor wire To install the compressor terminals U, V and W. 1 Check the state of the dampers. Replace if worn. 2 Install the 3 dampers in the correct location on the unit.
  • Page 86 3 Components Strip 2 Detach the strip (b) of the top jacket (c). Faston connectors 3 Remove the top jacket (c). 9 Install the cover of the compressor wire terminals. 4 Remove the body jacket (d) from the compressor (e).

  • Page 87: Crankcase Heater

    3 Components To perform an insulation check of the crankcase heater Prerequisite: Stop the unit operation (via the user interface, central controller, operation switch, …). Prerequisite: Turn OFF the respective circuit breaker. 1 Remove the required plate work, see "3.13 ...

  • Page 88: Current Sensor

    3 Components Current sensor 3.4.1 Checking procedures To perform an electrical check of the current sensor Prerequisite: Stop the unit operation (via the user interface, central controller, operation switch, …). Prerequisite: Turn OFF the respective circuit breaker. Prerequisite: Remove the required plate work, see "3.13 ...

  • Page 89: Expansion Valve

    3 Components Current sensor Current sensor Tie wrap Tie wrap Ferrite core Ferrite core Screw connections Screw connections Power wiring Power wiring 2 Remove the necessary tie wraps from the wiring of the current sensor and the power wiring.

  • Page 90: Repair Procedures

    3 Components 1 Turn ON the power of the unit. To perform an electrical check of the expansion valve INFORMATION Prerequisite: First perform a mechanical check of the expansion When power is switched ON, PCB checks all expansion valve, see "3.5.1 Checking procedures" on...
  • Page 91 3 Components To install the expansion valve body 1 Install the expansion valve body in the correct location and correctly oriented. 2 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT exceed 0.02 MPa. 3 Wrap a wet rag around the expansion valve body and solder the refrigerant pipes to the expansion valve body.

  • Page 92: Fan Inverter Pcb

    3 Components To install the expansion valve motor with clip 1 Install the expansion valve motor on the expansion valve body. INFORMATION The expansion valve motor is equipped with a pipe retention clip. Install the pipe retention clip over the pipe to lock the expansion valve motor.
  • Page 93 3 Components Is the measured voltage on the Action Is the wiring on the fan inverter Action PCB correct? PCB correct? Return to "Checking Return to "Checking procedures" on page 92 of the procedures" on page 92 of the PCB and continue with the next fan inverter PCB and continue procedure.
  • Page 94 3 Components Connector X1A, pin U Connector X1A, pin V Connector X1A, pin W X1A, pin X1A, pin 0,45 X1A, pin X1A, pin 0,45 X1A, pin X1A, pin X1A, pin 0,45 X1A, pin X1A, pin 0,45 X1A, pin X1A, pin...

  • Page 95: Double Fan Outdoor Unit

    3 Components 3.6.2 Double fan outdoor unit Checking procedures INFORMATION It is recommended to perform the checks in the listed order. To perform a power check of the fan inverter PCB 1 Measure the voltage between pins 1 and 3 of connector X5A The measured voltage MUST be 18 V DC.
  • Page 96 3 Components Prerequisite: Remove the required plate work, see "3.13  Plate To check if the correct spare part is installed work" on page 118. 1 Visit your local spare parts webbank. 1 Set the multimeter to diode measurement. 2 Enter the model name of your unit and check if the installed...

  • Page 97: High Pressure Switch

    3 Components Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure. Repair procedures To remove the fan inverter PCB Prerequisite: Stop the unit operation (via the user interface, central controller, operation switch, …).

  • Page 98: Repair Procedures

    3 Components 5 Measure the resistance between the pins 1‑2 of the high 6 Measure the resistance between the pins 1‑2 of the high pressure switch connector to check if it is open or closed. pressure switch connector. The switch MUST be open.

  • Page 99: Inverter Pcb

    3 Components 8 Heat the end of the high pressure switch pipe using an oxygen To perform a power check of the inverter PCB acetylene torch and remove the high pressure switch pipe end. 1 Measure the voltage between the following wires on the inverter 9 Stop the nitrogen supply when the piping has cooled down.
  • Page 100 3 Components Does the HAP LED blink in Action Any blown fuses on the Action regular intervals inverter PCB? (approximately 1 Hz)? Return to "3.8.1 Checking Return to "3.8.1 Checking procedures" on page 99 of the procedures" on page 99 of the inverter PCB and continue with inverter PCB and continue with the next procedure.
  • Page 101 3 Components Is the measured voltage Action approximately 560 V DC? Perform a diode module and power module check, see "3.8.1 Checking procedures" on page 99. To perform a diode module and power module check Prerequisite: Stop the unit operation (via the user interface, central controller, operation switch, …).
  • Page 102 3 Components Prerequisite: Stop the unit operation (via the user interface, central CAUTION controller, operation switch, …). Power transistor check mode is activated ONLY on the Prerequisite: Turn OFF the respective circuit breaker. main PCB of the main outdoor unit. When there is more Prerequisite: Remove the required plate work, see "3.13 ...

  • Page 103: Repair Procedures

    3 Components 12 Loosen and remove the screw (i) that fixes the thermistor clamp Are the test results OK? Action (j). Replace the inverter PCB, see "3.8.2 Repair procedures" on 13 Loosen and remove the 2 screws (k) that fix the heat pipe (l).
  • Page 104 3 Components 21 Lift and slightly tilt the compressor inverter PCB assembly (d), guide the compressor cable (e) into the switch box. 22 Put the compressor inverter PCB assembly (d) in horizontal position. 23 Remove the 4 screws (f) that fix the compressor inverter PCB (d).
  • Page 105 3 Components Fan inverter PCB 9 Connect connectors X3 (f) and X5 (g) from to fan inverter PCB (h). 10 Move the power terminal assembly (e) to the left. 11 Install the screw (d) to fix the power terminal assembly (e).

  • Page 106: Main Pcb

    3 Components 22 Install the 2 screws (c) to fix the cable clamps (d). Is the problem solved? Action 23 Install the screws (a) to fix the power terminal assembly (b). No further actions required. Return to "3.8.1 Checking For double fan units procedures" on page 99...
  • Page 107 3 Components 2 Check that no connectors or wires are damaged. Is the measurement correct? Action Return to "3.9.1 Checking 3 Check that the wiring corresponds with the wiring diagram, see procedures" on page 106 of the "6.2 Wiring diagram" on page 146. main PCB and continue with the 4 Check that the bridge connector X4A is plugged in, see next procedure.

  • Page 108: Repair Procedures

    3 Components Problem solved? After all checking procedures listed above have been performed: Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure. 3.9.2 Repair procedures...
  • Page 109 3 Components Applicable models Position of DIP switches RXYQ14 DS1-2, DS1-4, DS2-1 and DS2-3 are set as RXYTQ14 RXYQQ14 RXYQ16 DS1-2, DS1-4, DS2-2 and DS2-3 are set as RXYTQ16 RXYQQ16 RXYQ18 DS1-2, DS1-4, DS2-1, DS2-2 and RXYQQ18 DS2-3 are set as ON.

  • Page 110: Noise Filter Pcb

    3 Components (*) For RXYQQ8~20 models it is necessary to judge if an additional CAUTION parameter setting is required, depending on the indoor unit type: Make sure the fuse is plugged‑in correctly (contact with the ▪ All indoor units are R410A type indoor units: no additional setting fuse holder).
  • Page 111 3 Components 3 Check the power supply to the unit, see "4.1.1  Checking procedures" on page 130. Does the unit receive power? Action Correct the wiring from the main power supply terminal to the noise filter PCB, see "3.10.2 Repair procedures" on page 112.

  • Page 112: Repair Procedures

    3 Components 3.10.2 Repair procedures To correct the wiring from the main power supply terminal to the noise filter PCB 1 Make sure that all wires are firmly and correctly connected, see "6.2 Wiring diagram" on page 146. 2 Check the continuity of all wires.
  • Page 113 3 Components 11 Connect the service monitoring tool to the unit and check the Is the oil return valve coil Action pressure difference between the high and low pressure. Once firmly fixed and not visually the pressure difference between the high and low pressure damaged? exceeds 0,3 MPa and the compressor is running, Y3S and Y4S...

  • Page 114: Repair Procedures

    3 Components 3.11.2 Repair procedures To install the oil return valve body 1 Install the oil return valve in the correct location. To remove the oil return valve coil 2 Supply nitrogen to the refrigerant circuit. The nitrogen pressure Prerequisite: Stop the unit operation (via the user interface, central MUST NOT exceed 0.02 MPa.

  • Page 115: Outdoor Unit Fan Motor

    3 Components 2 Check that the DC fan motor connector X1A is properly Is the problem solved? Action connected to the PCB. Return to "3.11.1 Checking procedures" on page 112 of the 3 Measure the resistance between the pins 1–2, 1–3, and 2–3 of oil return valve and continue with the DC fan motor connector.

  • Page 116: Double Fan Outdoor Unit

    3 Components 5 To install the propeller fan blade assembly, see "Repair 3 Install and tighten the screw using an Allen key to fix the procedures" on page 115. propeller fan blade assembly. To remove the DC fan motor assembly 1 Remove the propeller fan blade assembly from the DC fan motor assembly, see "Repair procedures" on...
  • Page 117 3 Components 3 Remove the axle cover. To perform a mechanical check of the DC fan motor assembly 4 Pull the propeller fan blade from the fan motor axle. Prerequisite: First perform a mechanical check of the propeller fan blade assembly, see "Checking procedures" on...

  • Page 118: Plate Work

    3 Components 8 Remove the DC fan motor assembly from the unit. DANGER: RISK OF ELECTROCUTION 9 To install motor assembly, "Repair Confirm rectifier voltage is below 10  V  DC before procedures" on page 117. proceeding. To install the DC fan motor assembly 1 Install the DC fan motor assembly in the correct location.

  • Page 119: To Access The Switch Box On Double Fan Units

    3 Components 5 Loosen and remove the screw (d) that fixes the Thermistor R1T mounting bracket. 6 Using a screwdriver, carefully separate both heat sinks from the inverter PCB’s. WARNING Thermal grease is applied to the heat sinks. Use gloves when separating the heat sinks from the inverter boards.
  • Page 120 3 Components To remove the upper front plate Screw Switchbox cover Screw 9 Loosen and remove the 2 screws (a) that fix the switchbox Upper front plate cover. 5 Loosen and remove the 7 screws (a) that fix the upper front 10 Remove the switchbox cover (b) from the unit.

  • Page 121: To Remove The Plate Work On Double Fan Units

    3 Components To remove the side plate To remove the top plate Screw Top plate Screw Side plate 17 Loosen and remove the 12 screws (a) that fix the top plate assembly. 13 Loosen and remove the 7 screws (a) that fix the side plate assembly.
  • Page 122 3 Components To remove the upper front plate Screw Switchbox cover 9 Loosen and remove the 5 screws (a) that fix the switchbox Screw cover. Upper front plate 10 Remove the switchbox cover (b) from the unit. 5 Loosen and remove the 7 screws (a) that fix the upper front plate assembly.

  • Page 123: Reactor

    3 Components To remove the side plate To remove the top plate Screw Top plate 17 Loosen and remove the 12 screws (a) that fix the top plate assembly. Screw 18 Remove the top plate (b) from the unit.

  • Page 124: Repair Procedures

    3 Components 6 Measure the continuity of the reactor. Is the continuity measurement Action correct? Screw Reconnect the wiring to the Faston connector reactor. Screw Return to the troubleshooting of 2 Install the 4 screws that fix the reactor to the switch box.

  • Page 125: Repair Procedures

    3 Components 51.0 V (DC) Detected pressure kg/cm 47.12 45.9 48.55 40.8 4 Measure the voltage on X32A: pins 1–3 (= refrigerant pressure sensor output signal). 35.7 5 Check that the measured voltage is in line with the expected voltage through the read refrigerant pressure.

  • Page 126: Refrigerant Low Pressure Sensor

    3 Components Is the problem solved? Action No further actions required. Return to the troubleshooting of the specific error and continue with the next procedure. 3.16 Refrigerant low pressure sensor 3.16.1 Checking procedures To perform an electrical check of the refrigerant...

  • Page 127: Repair Procedures

    3 Components 3.16.2 Repair procedures V (DC) Detected pressure kg/cm 8.77 To remove the refrigerant pressure sensor 9.35 Prerequisite: Stop the unit operation (via the user interface, central 9.93 controller, operation switch, …). 10.51 Prerequisite: Turn OFF the respective circuit breaker.

  • Page 128: Thermistors

    3 Components Is the thermistor correctly Action installed (thermal contact between the thermistor and the piping)? Perform an electrical check of the specific thermistor, see "Checking procedures" on page 128. Correctly install the thermistor, "Repair procedures" on page 129. To perform an electrical check of the specific thermistor Prerequisite: First perform a mechanical check of the thermistor, "Checking procedures" on...
  • Page 129 3 Components Type 1 thermistor ▪ E.g. R3T thermistor: ▪ Measured temperature with contact thermometer: 23.1°C, T °C kΩ T °C kΩ T °C kΩ T °C kΩ ▪ Resistance value determined through temperature (using the –20 197.81 10 39.96...

  • Page 130: Other Thermistors

    4 Third party components Thermistor WARNING 3 Slide the insulation aside. When reconnecting a connector to the PCB, do NOT apply force, as this may damage the connector or connector pins 4 Pull the clip that fixes the thermistor.
  • Page 131 4 Third party components Is the measured voltage Action (power supply) correct? Return to the troubleshooting of the specific error and continue with the next procedure. Adjust the power supply, see "4.1.2 Repair procedures" on page 133. To check if the power supply is conform with the...
  • Page 132 4 Third party components 5 Measure on the F1 and F2 terminals. Result: 16 V DC should be read. Faulty Waveform. To measure the F1-F2 transmission with an oscilloscope: Possible reasons: ▪ Transmission circuit failure on INFORMATION a PCB. Ensure that probes are securely connected to F1-F2 terminals.

  • Page 133: Repair Procedures

    4 Third party components Time 3 Check that the wiring corresponds with the wiring diagram, see "6.2 Wiring diagram" on page 146. Is all wiring between the Action outdoor unit and the indoor unit correct? Return to the troubleshooting of the specific error and continue with the next procedure.
  • Page 134 4 Third party components Refrigerant overcharge diagnosis 1 High pressure rises. Consequently, overload control is conducted to cause insufficient cooling capacity. 2 The superheated degree of suction gas lowers (or the wet operation performed). Consequently, compressor becomes lower in discharge pipe temperature despite of pressure loads.
  • Page 135 4 Third party components The opening degree of the indoor unit 4 If the measured pressure is higher than the expected pressure Fan control, i.e., electronic expansion valve comes larger. (at outdoor temperature), other non‑condensables are mixed in actually hunting to...

  • Page 136: Repair Procedures

    4 Third party components To recuperate the refrigerant Is the refrigerant field piping Action conform with the regulations? Prerequisite: Stop the unit operation (via the user interface, central Adjust the refrigerant field piping, controller, operation switch, …). "4.2.2 Repair procedures" on 1 Necessary tools: page 136.
  • Page 137 4 Third party components For RYMQ-U units Liquid service port Gas service port Flexible hose Manifold Recovery unir Vacuum pump Scale Recovery cylinder Vacuum setup Equalizing pipe service port For RXYQ-U and RYYQ-U units Liquid service port Gas service port...

  • Page 138: External Factors

    4 Third party components 4 Activate refrigerant recovery / vacuum mode by setting field ▪ Pipe expansion / flare making: setting mode 2-21 to 1 (see "6.9 Field settings" on page 188). ▪ Remove any burrs on the cut surface using the correct tool...

  • Page 139: Repair Procedures

    4 Third party components To create sufficient space around the outdoor unit Is the outdoor temperature Action within the operating range? heat exchanger Return to the troubleshooting of 1 Create sufficient space around the outdoor unit heat exchanger. the specific error and continue See installation manual for the required space specifications.

  • Page 140: Maintenance

    5 Maintenance 3 Check if any other equipment interferes with the operation of Maintenance the outdoor unit (other device exhaust to outdoor unit heat exchanger, chimney exhaust to outdoor unit, corrosive or explosive ambient, electrical equipment such as antennas, Maintenance shedule GSM towers, etc…).

  • Page 141: To Clean The Outdoor Unit Heat Exchanger

    5 Maintenance 5.2.3 To clean the outdoor unit heat exchanger 1 Straighten the hair fins. 2 Clear the outdoor unit heat exchanger from dust, leaves,… using a fin-comb or compressed air/N CAUTION Avoid bending or damaging the hair fins of the outdoor unit heat exchanger during the cleaning process.

  • Page 142: Maintenance Procedures For Indoor Units

    5 Maintenance Maintenance procedures for INFORMATION indoor units Depending on the setting of parameter 20-0 on the indoor unit remote controller, a filter sign is indicated on the remote controller (or central controller if present). This 5.3.1 To check the general status of the unit indicates that the time that was set by the parameter has passed and filter cleaning is required.

  • Page 143: Direct Expansion: Maintenance - Vrv

    Direct expansion: Maintenance – VRV Installer General info Company name One time maintenance Contractual maintenance Contact person Performed by End customer Company Name Technician Street – N° Certificate Zip code – City Date Country Maintenance Outdoor unit (air cooled)
  • Page 144 Air curtain Hydrobox Air filter Clean Cleaned/replaced Filter water circuit Clean Cleaned Not OK Not OK Heat exchanger Clean Cleaned Unit outside state Clean Cleaned Not OK Unit inside state Clean Cleaned Fan motor/blades Clean Cleaned Not OK Tighten electrical connections...

  • Page 145: Technical Data

    6 Technical data Technical data Detailed information setting mode 6.1.1 Detailed information setting mode: Outdoor unit See the installer reference guide on business portal for more information. 6.1.2 Detailed information setting mode: Remote controller See the installer reference guide on business portal for more information.

  • Page 146: Wiring Diagram

    6 Technical data Wiring diagram 6.2.1 Wiring diagram: Outdoor unit DS1, DS2 DIP switch (A1P) Refer to the wiring diagram sticker on the unit. The abbreviations E1HC Crankcase heater used are listed below: Drain pan heater (option) INFORMATION F1U, F2U Fuse (T 3.15 A / 250 V)
  • Page 147 6 Technical data Electronic expansion valve (storage vessel) R24 (A4P, Resistor (current sensor) A7P) Solenoid valve (main) R300 (A3P, Resistor (current sensor) Solenoid valve (accumulator oil return) A6P) Solenoid valve (oil 1) Thermistor (air) Solenoid valve (subcool) Thermistor (accumulator)

  • Page 148: Piping Diagram

    6 Technical data Piping diagram 6.3.1 Piping diagram: Outdoor unit Piping diagram: RYMQ8~12 INFORMATION For a legend explaining the figures below, refer to the end of this topic. Piping diagram: RYYQ8~12 (S1NPL) (S1NPH) (S1PH) R21T (S1NPL) (S1NPH) (S1PH) R21T...
  • Page 149 6 Technical data Piping diagram: RXYQ8~12 (S1NPL) (S1NPH) (S1PH) R21T Piping diagram: RXYQ14~20 (S1NPL) (S1NPH) (S1PH) (S2PH) R22T R21T Compressor (M1C) Compressor (M2C) Heat exchanger Fan motor (M1F, M2F) Accumulator Expansion valve, main (Y1E) Expansion valve, subcool heat exchanger (Y2E)
  • Page 150 6 Technical data Component functionalities Symb Component Major function Symb Component Major function R21T Thermistor (M1C Detects discharge temperature of the discharge) compressor Compressor Inverter driven compressor operates in multi-steps according to T for cooling R22T Thermistor (M2C Detects discharge temperature of the and T for heating.

  • Page 151: Refrigerant Flow Diagram: Outdoor Unit

    6 Technical data 6.3.2 Refrigerant flow diagram: Outdoor unit RYYQ-U / Cooling mode S1NPL S1NPH S1PH S2PH R21T R22T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control • Indoor unit 2: Operation OFF, Fan OFF, Expansion valve: closed (0 pulse) •...
  • Page 152 6 Technical data RYYQ-U / Oil return operation in cooling mode S1NPL S1NPH S1PH S2PH R21T R22T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control • Indoor unit 2: Operation OFF, Fan OFF, Expansion valve: 224 pulses •...
  • Page 153 6 Technical data RYYQ-U / Heating mode and oil return operation in heating mode S1NPL S1NPH S1PH S2PH R22T R21T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control • Indoor unit 2: Operation OFF, Fan OFF, Expansion valve: average subcool control •...
  • Page 154 6 Technical data RYYQ-U / Defrost operation S1NPH S1NPL S1PH S2PH R21T R22T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control • Indoor unit 2: Operation OFF, Fan OFF, Expansion valve: closed (0 pulse) •...
  • Page 155 6 Technical data RXYQ-U / Cooling mode S1NPL S1NPH S1PH S2PH R21T R22T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control • Indoor unit 2: Operation OFF, Fan OFF, Expansion valve: closed (0 pulse) •...
  • Page 156 6 Technical data RXYQ-U / Oil return operation in cooling mode S1NPH S1NPL S1PH S2PH R22T R21T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control • Indoor unit 2: Operation OFF, Fan OFF, Expansion valve: 224 pulses •...
  • Page 157 6 Technical data RXYQ-U / Heating mode S1NPL S1NPH S1PH S2PH R21T R22T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control • Indoor unit 2: Operation OFF, Fan OFF, Expansion valve: average subcool control •...
  • Page 158 6 Technical data RXYQ-U / Oil return operation and defrost operation in heating mode S1NPL S1NPH S1PH S2PH R22T R21T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: 416 pulses • Indoor unit 2: Operation OFF, Fan OFF, Expansion valve: 256 pulses •...
  • Page 159 6 Technical data RYMQ-U / Cooling mode S1NPL S1NPH S1NPL S1NPH S1PH S2PH S1PH S2PH R21T R21T R22T R22T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control • Indoor unit 2: Operation OFF, Fan OFF, Expansion valve: closed (0 pulse) •...
  • Page 160 6 Technical data RYMQ-U / Oil return operation in cooling mode S1NPL S1NPH S1NPL S1NPH S1PH S2PH S1PH S2PH R21T R21T R22T R22T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control •...
  • Page 161 6 Technical data RYMQ-U / Heating mode and oil return in heating mode S1NPL S1NPH S1NPL S1NPH S1PH S1PH S2PH S2PH R21T R21T R22T R22T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control •...
  • Page 162 6 Technical data RYMQ-U / Defrost operation S1NPL S1NPH S1NPL S1NPH S1PH S2PH S1PH S2PH R21T R21T R22T R22T Indoor units conditions: • Indoor unit 1: Operation ON, Thermo ON, Fan ON, Expansion valve: normal control • Indoor unit 2: Operation OFF, Fan OFF, Expansion valve: closed (0 pulse) •...
  • Page 163 6 Technical data Red Lines High pressure, high temperature gas Green Lines High pressure, high temperature liquid Blue Lines Low pressure, low temperature gas Orange Lines Oil return line Indoor unit 1 Indoor unit 2 Indoor unit 3 Field piping (liquid)

  • Page 164: Component Overview

    6 Technical data Component overview 6.4.1 Component overview: RXYQ8~12U units Switchbox, for details see "6.5 Switchbox overview" on 4-way valve Y1S Accumulator inlet thermistor R3T page 182. Refrigerant high pressure sensor S1NPH Fan motor High pressure switch S1PH Liquid cooling expansion valve Y3E...
  • Page 165 6 Technical data Switchbox, for details see "6.5 Switchbox overview" on 4-way valve Y1S Accumulator inlet thermistor R3T page 182. Refrigerant high pressure sensor S1NPH Fan motor High pressure switch S1PH Liquid cooling expansion valve Y3E Compressor (M1C ) discharge thermistor R21T...

  • Page 166: Component Overview: Rxyq14~16U Units

    6 Technical data 6.4.2 Component overview: RXYQ14~16U units Switchbox, for details see "6.5 Switchbox overview" on Sub‑cool expansion Valve Y2E Main expansion valve Y1E page 182. Low pressure sensor S1NPL Fan motor M1F 4-way valve Y1S Fan motor M2F High pressure switch S2PH...
  • Page 167 6 Technical data Switchbox, for details see "6.5 Switchbox overview" on Sub‑cool expansion Valve Y2E Main expansion valve Y1E page 182. Low pressure sensor S1NPL Fan motor M1F 4-way valve Y1S Fan motor M2F High pressure switch S2PH Liquid cooling expansion valve Y3E...

  • Page 168: Component Overview: Rxyq18~20U Units

    6 Technical data 6.4.3 Component overview: RXYQ18~20U units Switchbox, for details see "6.5 Switchbox overview" on Sub‑cool expansion Valve Y2E Main expansion valve Y1E page 182. Low pressure sensor S1NPL Fan motor M1F 4-way valve Y1S Fan motor M2F High pressure switch S2PH...
  • Page 169 6 Technical data Switchbox, for details see "6.5 Switchbox overview" on Sub‑cool expansion Valve Y2E Main expansion valve Y1E page 182. Low pressure sensor S1NPL Fan motor M1F 4-way valve Y1S Fan motor M2F High pressure switch S2PH Liquid cooling expansion valve Y3E...

  • Page 170: Component Overview: Rymq8~12U Units

    6 Technical data 6.4.4 Component overview: RYMQ8~12U units ad v Switchbox, for details see "6.5 Switchbox overview" on 4-way valve Y1S Accumulator inlet thermistor R3T page 182. Refrigerant high pressure sensor S1NPH Fan motor High pressure switch S1PH Liquid cooling expansion valve Y3E...
  • Page 171 6 Technical data Switchbox, for details see "6.5 Switchbox overview" on 4-way valve Y1S Accumulator inlet thermistor R3T page 182. Refrigerant high pressure sensor S1NPH Fan motor High pressure switch S1PH Liquid cooling expansion valve Y3E Compressor (M1C ) discharge thermistor R21T...

  • Page 172: Component Overview: Rymq14~16U Units

    6 Technical data 6.4.5 Component overview: RYMQ14~16U units Switchbox, for details see "6.5 Switchbox overview" on Main expansion valve Y1E Low pressure sensor S1NPL page 182. 4-way valve Y1S Fan motor M1F High pressure switch S2PH Fan motor M2F Refrigerant high pressure sensor S1NPH...
  • Page 173 6 Technical data Switchbox, for details see "6.5 Switchbox overview" on Main expansion valve Y1E Low pressure sensor S1NPL page 182. 4-way valve Y1S Fan motor M1F High pressure switch S2PH Fan motor M2F Refrigerant high pressure sensor S1NPH Liquid cooling expansion valve Y3E...

  • Page 174: Component Overview: Rymq18~20U Units

    6 Technical data 6.4.6 Component overview: RYMQ18~20U units Switchbox, for details see "6.5 Switchbox overview" on Main expansion valve Y1E Low pressure sensor S1NPL page 182. 4-way valve Y1S Fan motor M1F High pressure switch S2PH Fan motor M2F Refrigerant high pressure sensor S1NPH...
  • Page 175 6 Technical data Switchbox, for details see "6.5 Switchbox overview" on Main expansion valve Y1E Low pressure sensor S1NPL page 182. 4-way valve Y1S Fan motor M1F High pressure switch S2PH Fan motor M2F Refrigerant high pressure sensor S1NPH Liquid cooling expansion valve Y3E...

  • Page 176: Component Overview: Ryyq8~12U Units

    6 Technical data 6.4.7 Component overview: RYYQ8~12U units Switchbox, for details see "6.5 Switchbox overview" on Accumulator inlet thermistor R3T Refrigerant high pressure sensor S1NPH page 182. High pressure switch S1PH Fan motor Compressor (M1C ) discharge thermistor R21T Liquid cooling expansion valve Y3E...
  • Page 177 6 Technical data Switchbox, for details see "6.5 Switchbox overview" on Accumulator inlet thermistor R3T Refrigerant high pressure sensor S1NPH page 182. High pressure switch S1PH Fan motor Compressor (M1C ) discharge thermistor R21T Liquid cooling expansion valve Y3E Compressor (M1C ) body thermistor R8T...

  • Page 178: Component Overview: Ryyq14~16U Units

    6 Technical data 6.4.8 Component overview: RYYQ14~16U units Switchbox, for details see "6.5 Switchbox overview" on Low pressure sensor S1NPL 4-way valve Y1S page 182. High pressure switch S2PH Fan motor M1F Refrigerant high pressure sensor S1NPH Fan motor M2F Accumulator inlet thermistor R3T...
  • Page 179 6 Technical data Switchbox, for details see "6.5 Switchbox overview" on Low pressure sensor S1NPL 4-way valve Y1S page 182. High pressure switch S2PH Fan motor M1F Refrigerant high pressure sensor S1NPH Fan motor M2F Accumulator inlet thermistor R3T Liquid cooling expansion valve Y3E...

  • Page 180: Component Overview: Ryyq18~20U Units

    6 Technical data 6.4.9 Component overview: RYYQ18~20U units Switchbox, for details see "6.5 Switchbox overview" on Low pressure sensor S1NPL 4-way valve Y1S page 182. High pressure switch S2PH Fan motor M1F Refrigerant high pressure sensor S1NPH Fan motor M2F Accumulator inlet thermistor R3T...
  • Page 181 6 Technical data Switchbox, for details see "6.5 Switchbox overview" on Low pressure sensor S1NPL 4-way valve Y1S page 182. High pressure switch S2PH Fan motor M1F Refrigerant high pressure sensor S1NPH Fan motor M2F Accumulator inlet thermistor R3T Liquid cooling expansion valve Y3E...

  • Page 182: Switchbox Overview

    6 Technical data Switchbox overview 6.5.1 Single fan units Switchbox Front view Fan motor (M1F) Rear view Compressor (M1C) Main PCB (A1P) Optional cool/heat selector PCB (A5P) Rectifier voltage check connector (X3A) Main supply connection terminal (X1M) M1F (X1A)

  • Page 183: Safety Devices

    6 Technical data Safety devices Wiring Component Description Trigger Error Action type symbol Current sensor Earth leakage protection T1A > 75 mA (± 25%) Drop control S1PH, High pressure switch High pressure protection High pressure >4.0 MPa (+0.00, -0.15) Forced stop S2PH Reset: high pressure <3.0 MPa±0.15...

  • Page 184: Field Information Report

    6 Technical data Field information report See next page. Service manual RYYQ+RYMQ+RXYQ8~20U7Y1B VRV IV+ Heat Pump ESIE18-14 – 2019.07...
  • Page 185 In case a problem occurred on the unit which could not be resolved by using the content of this service manual or in case you have a problem which could be resolved but of which the manufacturer should be notified, we advise you to contact your distributor.
  • Page 186 Application information Application (house, apartment, office,…): New project or reimbursement: Piping layout / Wiring layout (simple schematic): Unit / Installation information Model name: Serial number: Installation / commissioning date: Software version user interface: Software version outdoor PCB: Provide pictures of the field settings overview (viewable on the user interface).

  • Page 187: Service Tools

    6 Technical data Service tools 1 For an overview of the available service tools, check the Business Portal: http://www.mydaikin.eu. 2 Go to the tab After-sales support on the left navigation pane and select Technical support. 3 Click the button Service tools. An overview of the available service tools for the different products is shown.

  • Page 188: Field Settings

    6 Technical data Result: Mode  1 setting 10 is addressed and selected, return Field settings value (e.g. 15) is monitored information (15 indoor units connected to the system). 6.9.1 To access mode 1 or 2 5 To leave the monitoring function, push BS1 one time.

  • Page 189: Mode 1: Field Settings

    6 Technical data 6.9.4 Mode 1: Field settings In mode 1 you can make field settings to configure the system. The LEDs give a binary representation of the setting/value number. This column shows the number of times you have to push the SET button (BS2) to access the field setting.
  • Page 190 6 Technical data N° Item Display Content Software id lower code 1.22 Displays lower code for software ID Latest retry 1.23 Displays latest reason causing retry 2nd latest retry 1.24 Displays 2nd latest reason causing retry 3rd latest retry 1.25...

  • Page 191: Mode 2: Field Settings

    6 Technical data 6.9.5 Mode 2: Field settings In mode 2 you can make field settings to configure the system. The LEDs give a binary representation of the setting/value number. This column shows the number of times you have to push the SET button (BS2) to access the field setting.
  • Page 192 6 Technical data N° Item Display Content Nighttime low noise operation stop time setting 2.27 6h00 (combined with 2-22) 7h00 8h00 Power transistor check mode 2.28 Capacity priority in low noise operation mode 2.29 Level setting for demand control step 1 2.30...
  • Page 193 6 Technical data N° Item Display Content Cooling comfort setting 2.81 Mild Quick Powerful Heating comfort setting 2.82 Mild Quick Powerful Cool/heat master allocation in case VRV + RA 2.83 installed together BP initial EV opening in heating mode 2.84...

  • Page 194: Overview Of Field Settings For Indoor Units

    6 Technical data 6.9.6 Overview of field settings for indoor units The overview lists all possible settings for the indoor units. The availability of the setting depends on the indoor unit type, see "Field settings as per type indoor unit". Bold content is default setting.
  • Page 195 6 Technical data Mode code Description function code Description selection 12(22) Optional board KRP1A… output X1X2 Indoor unit turned ON by thermostat Operation output Malfunction output T1T2 input signal Forced OFF ON/OFFcontrol External protection device input Forced OFF - multi tenant Thermostat differential to set point 1.0°C (FXFQ, FXZQ, FXCQ, FXKQ,...
  • Page 196 6 Technical data Mode code Description function code Description selection 13(23) Air flow amount setting (ceiling height) Standard High Extra high Number of air outlet 4-blow panel 4-blow directions 3-blow directions 2-blow directions Swing pattern setting if 4 swing motors...

  • Page 197: Field Settings As Per Type Of Indoor Unit

    6 Technical data 6.9.7 Field settings as per type of indoor unit The overview lists all possible settings for the indoor units. The availability of the setting depends on the indoor unit type, see "Field settings as per type indoor unit".
  • Page 198 https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin...
  • Page 199 https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin...
  • Page 200 ESIE18-14 2019.07...

This manual is also suitable for:

Ryyq8u7y1bRyyq10u7y1bRyyq12u7y1bRyyq14u7y1bRyyq16u7y1bRyyq18u7y1b ... Show all

Table of Contents