Daikin RZQ125B8W1B Service Manual

Pocket
Manual
Service Diagnosis
Si20 - 701_B

Daikin RZQ125B8W1B Specifications

General

Brand	Daikin
Model	RZQ125B8W1B
Category	Air Conditioner
Language	English

Summary

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

Guides on diagnosing issues when the indoor fan runs but the compressor does not.

2.4 Cooling / Heating Operation Starts but Stops Immediately

Outlines troubleshooting for operations that start and then stop abruptly.

2.6 Equipment Operates but does not Provide Cooling

Provides steps to resolve cases where the unit operates but fails to cool.

Troubleshooting by Remote Controller

3.2 Error Codes and Description

Lists common error codes and their general descriptions for indoor units.

3.4 A0 Error of External Protection Device

Details troubleshooting for errors related to external protection devices.

3.5 A1 Indoor Unit PCB Abnormality

Covers troubleshooting steps for abnormalities detected in the indoor unit's PCB.

3.7 A6 Indoor Unit Fan Motor Abnormality

3.11 A9 Electronic Expansion Valve Coil (Y1E) Abnormality

3.21 E0 Actuation of Safety Device

3.28 E4 Low Pressure System Abnormality

3.33 E6 Compressor Overcurrent

3.40 F6 Refrigerant Overcharged

3.56 L1 Outdoor Unit PCB Abnormality

3.72 LC Transmission Error Between Inverter and Control PCB

3.83 U0 Refrigerant Shortage

3.86 U1 Reverse Phase

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

3.97 U9 Transmission Error Between Indoor and Outdoor Units in the Same System

3.100 UA Field Setting Switch Abnormality

3.102 UC Centralized Address Setting Error

3.105 UF Mis-connection of Field Wiring

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

3.109 UH System Error, Refrigerant System Address Undefined