Daikin RZQ125HY4A User Manual

Pocket
Manual
Service Diagnosis
Si20 - 701_B

Daikin RZQ125HY4A Specifications

General

Brand	Daikin
Model	RZQ125HY4A
Category	Air Conditioner
Language	English

Summary

Pocket Manual

Service Diagnosis

Guide for diagnosing service issues with the SkyAir system.

Symptom-based Troubleshooting

Equipment does not Operate

Cooling / Heating Operation Starts but Stops Immediately

Equipment Operates but does not Provide Cooling

Equipment Operates but does not Provide Heating

Equipment Produces Loud Noise or Vibration

Remote Controller LCD Displays "88"

Troubleshooting by Remote Controller

Procedure of Self-diagnosis by Remote Controller

Steps for performing self-diagnosis using the remote controller.

Error Codes and Description

List and description of error codes for indoor units.

Detailed Error Codes

Detailed information and diagnosis for specific error codes.

Specific Error Code Troubleshooting

A1 Indoor Unit PCB Abnormality

Troubleshooting for abnormalities in the indoor unit PCB.

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

Troubleshooting transmission errors between indoor unit PCB and fan PCB.

E3 High Pressure System Abnormality

L1 Outdoor Unit PCB Abnormality

Troubleshooting for abnormalities in the outdoor unit PCB.

U0 Refrigerant Shortage

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

Troubleshooting transmission errors between indoor and outdoor units.

UA Defective Field Setting Switch

UF System is not Set yet