Daikin RR125MY1 User Manual

Pocket
Manual
Service Diagnosis
Si20 - 701_B

Daikin RR125MY1 Specifications

General

Brand	Daikin
Model	RR125MY1
Category	Air Conditioner
Language	English

Summary

Symptom-based Troubleshooting

2.2 Equipment does not Operate

Troubleshooting steps for when the air conditioning unit fails to operate.

2.3 Indoor Unit Fan Operates, but Compressor does not Operate

Diagnosing issues where the indoor fan runs but the compressor is not operating.

2.4 Cooling / Heating Operation Starts but Stops Immediately

Troubleshooting for operations that start briefly and then stop immediately.

Troubleshooting by Remote Controller

3.2 Error Codes and Description

3.4 A0 Error of External Protection Device

Troubleshooting for error code A0 related to external protection device actuation.

3.5 A1 Indoor Unit PCB Abnormality

Diagnosing abnormalities related to the Indoor Unit PCB (Error A1).

3.11 A9 Electronic Expansion Valve Coil (Y1E) Abnormality

3.23 E1 Outdoor Unit PCB Abnormality

Diagnosing abnormalities related to the Outdoor Unit PCB (Error E1).

3.28 E4 Low Pressure System Abnormality

3.32 E5 Compressor Motor Lock

Diagnosing issues related to compressor motor lock (Error E5).

3.40 F6 Refrigerant Overcharged

3.43 H4 Low Pressure Sensor System Abnormality

3.56 L1 Outdoor Unit PCB Abnormality

Troubleshooting for abnormalities in the Outdoor Unit PCB (Error L1).

3.75 P1 Open Phase or Power Supply Voltage Imbalance

Troubleshooting for open phase or power supply voltage imbalance (Error P1).

3.83 U0 Refrigerant Shortage

3.86 U1 Reverse Phase

3.87 U2 Insufficient Voltage

3.99 UA Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller

3.105 UF Mis-connection of Field Wiring

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