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Daikin FHC24NUV2S User Manual

Daikin FHC24NUV2S
501 pages
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Pocket
Manual
Service Diagnosis
Si20 - 701_B

Table of Contents

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Daikin FHC24NUV2S Specifications

General IconGeneral
Indoor Unit Dimensions (W x H x D)990 x 298 x 234 mm
Outdoor Unit Dimensions (W x H x D)845 x 695 x 300 mm
InverterYes
TypeSplit AC
RefrigerantR32
Star Rating3

Summary

List of Applicable Models

Symptom-based Troubleshooting

2.2 Equipment does not Operate

Troubleshooting steps for when the equipment fails to operate, including potential causes like fuse issues or component failures.

2.3 Indoor Unit Fan Operates, but Compressor does not Operate

Diagnostic steps for when the indoor fan works, but the compressor remains inactive, indicating potential PCB or switch failures.

2.4 Cooling / Heating Operation Starts but Stops Immediately

Troubleshooting for operation that starts and then stops immediately, potentially due to pressure switches or refrigerant issues.

2.6 Equipment Operates but does not Provide Cooling

Steps to resolve issues where the unit runs but does not provide cooling, possibly due to refrigerant shortage or airflow problems.

2.9 Equipment Produces Loud Noise or Vibration

Guides on identifying and resolving issues related to excessive noise or vibration from the unit, often caused by installation or component contact.

Troubleshooting by Remote Controller

3.1 Procedure of Self-diagnosis by Remote Controller

Details on using the remote controller's inspection/test functions to diagnose errors and clear error history.

3.2 Error Codes and Description

A comprehensive table listing error codes, descriptions, and applicable model series for indoor units.

3.5 A1 Indoor Unit PCB Abnormality

Guidance for 'A1' errors indicating indoor unit PCB issues, including checks for E²PROM data and external factors.

3.11 A9 Electronic Expansion Valve Coil (Y1E) Abnormality

Troubleshooting for 'A9' errors related to the electronic expansion valve coil, involving checks for connection and resistance.

3.24 E3 High Pressure System Abnormality

Diagnosing 'E3' errors for high pressure issues, including checks on switches, refrigerant, and PCB.

3.32 E5 Compressor Motor Lock

Steps for 'E5' errors indicating compressor motor lock, covering wiring, PCB, and pressure conditions.

3.43 H4 Low Pressure Sensor System Abnormality

Troubleshooting for 'H4' errors concerning the low pressure sensor system, checking connections, continuity, and PCB.

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

Diagnosing 'LC' errors for transmission issues between control PCB and inverter PCB, checking wiring and PCB.

3.83 U0 Refrigerant Shortage

Guidance for 'U0' errors indicating refrigerant shortage, involving checks on refrigerant levels and piping.

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