Daikin R50GAV1A User Manual

Pocket
Manual
Service Diagnosis
Si20 - 701_B

Daikin R50GAV1A Specifications

General

Brand	Daikin
Model	R50GAV1A
Category	Air Conditioner
Language	English

Summary

2. Symptom-based Troubleshooting

2.2 Equipment does not Operate

Details troubleshooting steps for when the equipment fails to start or operate.

2.3 Indoor Unit Fan Operates, but Compressor does not Operate

Addresses issues where the indoor fan runs, but the compressor does not engage.

2.4 Cooling / Heating Operation Starts but Stops Immediately

Troubleshooting for systems that start and then stop operation shortly after.

2.5 After Unit Shuts Down, It cannot be Restarted for a While

2.6 Equipment Operates but does not Provide Cooling

Troubleshooting steps for when the unit operates but fails to cool effectively.

2.7 Equipment Operates but does not Provide Heating

Troubleshooting steps for when the unit operates but fails to heat effectively.

3. Troubleshooting by Remote Controller

3.1 Procedure of Self-diagnosis by Remote Controller

Outlines the steps for performing self-diagnosis using the remote controller.

3.2 Error Codes and Description

Comprehensive list and description of error codes for indoor and outdoor units.

3.2.1 Indoor Unit

3.2.2 Outdoor Unit, System NON-Inverter Series

3.2.2 Outdoor Unit, System Inverter Series

3.4 Error of External Protection Device

3.3 Detailed Error Codes

Detailed descriptions and diagnostic procedures for specific error codes.

3.5 Indoor Unit PCB Abnormality

Troubleshooting for indoor unit PCB failures and abnormalities.

3.6 Drain Water Level System Abnormality

3.7 Indoor Unit Fan Motor Abnormality

Troubleshooting for indoor unit fan motor malfunctions or abnormalities.

3.8 Fan Motor (M1F) Lock, Overload

Diagnosing and resolving fan motor lock or overload conditions.

3.10 Abnormal Power Supply Voltage

3.11 Electronic Expansion Valve Coil (Y1E) Abnormality

Troubleshooting for abnormalities in the electronic expansion valve coil.

3.12 Drain System Abnormality

3.13 Drain Level above Limit

3.15 Transmission Error (between Indoor Unit PCB and Fan PCB)

Troubleshooting transmission errors between indoor unit and fan PCB.

3.16 Transmission Error (between Indoor Unit PCB and Adaptor PCB)

Troubleshooting transmission errors between indoor unit PCB and adaptor PCB.

3.17 Thermistor Abnormality (C4, C5, C9)

3.21 Actuation of Safety Device (E0)

3.22 Activation of Outdoor Unit Protection Device (E0)

3.23 Outdoor Unit PCB Abnormality (E1)

Troubleshooting for outdoor unit PCB abnormalities.

3.24 High Pressure System Abnormality (E3)

Troubleshooting for high pressure system abnormalities.

3.25 Abnormally High Pressure Level (HPS) (E3)

Diagnosing abnormally high pressure levels (HPS) in the system.

3.26 High Pressure Abnormality (HPS) (E3)

Troubleshooting for high pressure abnormalities indicated by HPS.

3.27 Actuation of High Pressure Switch (E3)

Troubleshooting for actuation of the high pressure switch.

3.28 Low Pressure System Abnormality (E4)

Troubleshooting for low pressure system abnormalities.

3.29 Actuation of Pressure Sensor (E4)

Troubleshooting for pressure sensor actuation.

3.30 Actuation of Low Pressure Sensor (E4)

Troubleshooting for low pressure sensor actuation.

3.31 Low Pressure System Abnormality (E4)

Troubleshooting for low pressure system abnormalities.

3.32 Compressor Motor Lock (E5)

Troubleshooting for compressor motor lock conditions.

3.33 Compressor Overcurrent (E6)

Troubleshooting for compressor overcurrent faults.

3.34 Outdoor Unit Fan Motor Abnormality (E7)

Troubleshooting for outdoor unit fan motor abnormalities.

3.35 Electronic Expansion Valve Abnormality (E9)

Troubleshooting for electronic expansion valve abnormalities.

3.36 Electronic Expansion Valve Coil Abnormality (E9)

Troubleshooting for electronic expansion valve coil abnormalities.

3.37 Discharge Pipe Temperature Abnormality (F3)

3.38 Discharge Pipe Temperature Control (F3)

3.40 Refrigerant Overcharged (F6)

3.41 High Pressure Switch Abnormality (H3)

Troubleshooting for high pressure switch abnormalities.

3.42 High Pressure Switch System Abnormality (H3)

Troubleshooting for high pressure switch system abnormalities.

3.43 Low Pressure Sensor System Abnormality (H4)

Troubleshooting for low pressure sensor system abnormalities.

3.44 Outdoor Unit Fan Motor Signal Abnormality (H7)

3.45 Thermistor System Abnormality (H9, J3, J5, J6, J7, J8)

3.47 Pressure Sensor Abnormality (J1)

3.48 Current Sensor System Abnormality (J2)

3.49 Discharge Pipe Thermistor System Abnormality (J3)

3.50 Suction Pipe Thermistor Abnormality (J5)

3.54 High Pressure Sensor Abnormality (JA)

3.55 Suction Pipe Pressure Sensor Abnormality (JC)

3.56 Outdoor Unit PCB Abnormality (L1)

Troubleshooting for outdoor unit PCB abnormalities.

3.57 Outdoor Inverter PCB Abnormality (L1)

Troubleshooting for outdoor inverter PCB abnormalities.

3.58 Outdoor Unit PCB Abnormality (L1)

Troubleshooting for outdoor unit PCB abnormalities.

3.59 Overcurrent of DC Output (Instantaneous) (L4)

3.61 Overcurrent of DC Output (Instantaneous) (L5)

3.62 Momentary Overcurrent of Inverter Compressor (L5)

3.63 Output Overcurrent Detection (L5)

3.64 Inverter Compressor Abnormality (L5)

3.65 Output Overcurrent Detection (L5)

3.66 Electronic Thermal Switch (Time Lag) (L8)

3.67 Inverter Current Abnormality (L8)

3.68 Inverter Compressor Overcurrent (L8)

3.69 Electronic Thermal (Time Lag) (L8)

3.72 Transmission Error Between Inverter and Control PCB (LC)

3.73 Transmission Error (between Control PCB and Inverter PCB) (LC)

3.74 Inverter Over-Ripple Protection (P1)

3.75 Open Phase or Power Supply Voltage Imbalance (P1)

3.83 Refrigerant Shortage (U0)

Troubleshooting for refrigerant shortage issues.

3.84 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure (U0)

Diagnosing low pressure drops due to refrigerant shortage or EV failure.

3.85 Refrigerant Shortage (U0)

Troubleshooting for refrigerant shortage.

3.86 Reverse Phase (U1)

3.87 Insufficient Voltage (U2)

3.88 Power Supply Voltage Abnormality (U2)

3.89 Power Supply Insufficient or Instantaneous Failure (U2)

3.90 Power Supply Voltage Abnormality (U2)

3.92 Transmission Error (Between Indoor Unit and Outdoor Unit) (U4 or UF)

3.93 Transmission Error (Between Indoor Unit and Outdoor Unit) (U4)

3.94 Transmission Error (Between Indoor Unit and Outdoor Unit) (U4)

3.95 Transmission Error Between Outdoor Units (U7)

3.96 Transmission Error Between Main Remote Controller and Sub Remote Controller (U8)

3.104 Transmission Error between Centralized Controller and Indoor Unit (UE)

3.105 Mis-connection of Field Wiring (UF)

3.107 Transmission Error between Indoor and Outdoor Unit / Piping and Wiring Mismatch / Refrigerant Shortage (UF)