Daikin RZR125KUV1 User Manual

Pocket
Manual
Service Diagnosis
Si20 - 701_B

Daikin RZR125KUV1 Specifications

General

Brand	Daikin
Model	RZR125KUV1
Category	Air Conditioner
Language	English

Summary

Service Diagnosis

2. Symptom-based Troubleshooting

Provides a comprehensive guide to diagnosing issues based on observed symptoms.

2.2 Equipment does not Operate

Details supposed causes and troubleshooting steps for when the equipment fails to start.

2.3 Indoor Unit Fan Operates, but Compressor does not Operate

Troubleshooting steps for scenarios where the indoor fan runs but the compressor is inactive.

2.4 Cooling / Heating Operation Starts but Stops Immediately

Addresses issues where the AC operation starts briefly and then stops unexpectedly.

2.6 Equipment Operates but does not Provide Cooling

Troubleshooting guide for when the unit runs but fails to deliver cooling.

2.7 Equipment Operates but does not Provide Heating

Troubleshooting guide for when the unit runs but fails to deliver heating.

3. Troubleshooting by Remote Controller

Guides on troubleshooting issues using the remote controller and interpreting error codes.

3.1 Procedure of Self-diagnosis by Remote Controller

Explains how to perform self-diagnosis using the remote controller to identify errors.

3.2 Error Codes and Description

Lists and describes various error codes displayed on the remote controller for indoor units.

3.5 A1 Indoor Unit PCB Abnormality

Details troubleshooting for an abnormality detected in the indoor unit's Printed Circuit Board (PCB).

3.7 A6 Indoor Unit Fan Motor Abnormality

Troubleshooting guide for abnormalities related to the indoor unit's fan motor.

3.11 A9 Electronic Expansion Valve Coil (Y1E) Abnormality

Troubleshooting steps for an abnormality in the electronic expansion valve coil (Y1E).

3.12 AF Drain System Abnormality

Guidance for diagnosing and resolving abnormalities in the drain system.

3.15 C1 Transmission Error (between Indoor Unit PCB and Fan PCB)

3.21 E0 Actuation of Safety Device

3.23 E1 Outdoor Unit PCB Abnormality

3.24 E3 High Pressure System Abnormality

3.32 E5 Compressor Motor Lock

3.33 E6 Compressor Overcurrent

3.35 E9 Electronic Expansion Valve Abnormality

3.40 F6 Refrigerant Overcharged

3.41 H3 High Pressure Switch Abnormality

3.43 H4 Low Pressure Sensor System Abnormality

3.44 H7 Outdoor Unit Fan Motor Signal Abnormality

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

3.47 J1 Pressure Sensor Abnormality

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)

3.94 U5 Transmission Error Between Indoor Unit and Remote Controller

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

3.98 UA Defective Field Setting Switch

3.100 UA Field Setting Switch Abnormality

3.102 UC Centralized Address Setting Error

3.104 UE Transmission Error between Centralized Controller and Indoor Unit

3.105 UF Mis-connection of Field Wiring

3.106 UF System is not Set yet

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

3.108 UF Transmission System Abnormality (between Indoor and Outdoor Units)

3.109 UH System Error, Refrigerant System Address Undefined