Daikin FH26NUV1 - User Manual

Pocket
Manual
Service Diagnosis
Si20 - 701_B

Summary

Symptom-based Troubleshooting

2.2 Equipment does not Operate

Details potential causes and troubleshooting steps for when the equipment fails to operate.

2.3 Indoor Unit Fan Operates, but Compressor does not Operate

Troubleshooting guide for scenarios where only the indoor fan is active, but the compressor is not.

2.4 Cooling; Heating Operation Starts but Stops Immediately

Addresses issues where the cooling or heating cycle starts and then stops prematurely.

2.6 Equipment Operates but does not Provide Cooling

Guide for diagnosing issues when the unit runs but fails to deliver cooling.

2.7 Equipment Operates but does not Provide Heating

Troubleshooting steps for when the unit operates but fails to provide heating.

Troubleshooting by Remote Controller

3.2 Error Codes and Description

Provides a list of error codes and their general descriptions for indoor units.

3.3 Detailed Error Codes

Offers in-depth explanations and diagnostic steps for specific indoor unit error codes.

3.7 A6 Indoor Unit Fan Motor Abnormality

Guide for diagnosing abnormalities with the indoor unit fan motor (Error A6).

3.8 A6 Fan Motor (M1 F) Lock, Overload

Specific troubleshooting for fan motor lock or overload conditions (Error A6).

3.17 C4, C5, C9 Thermistor Abnormality

Guide for diagnosing abnormalities in thermistors (Errors C4, C5, C9).

3.23 E1 Outdoor Unit PCB Abnormality

Troubleshooting steps for outdoor unit PCB abnormalities (Error E1).

3.24 E3 High Pressure System Abnormality

Diagnosing high pressure system abnormalities (Error E3).

3.28 E4 Low Pressure System Abnormality

Troubleshooting low pressure system abnormalities (Error E4).

3.32 E5 Compressor Motor Lock

Guide for diagnosing compressor motor lock conditions (Error E5).

3.33 E6 Compressor Overcurrent

Troubleshooting compressor overcurrent issues (Error E6).

3.34 E7 Outdoor Unit Fan Motor Abnormality

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

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

3.47 J1 Pressure Sensor Abnormality

3.56 L1 Outdoor Unit PCB Abnormality

3.59 L4 Overcurrent of DC Output (Instantaneous)

3.61 L5 Momentary Overcurrent of Inverter Compressor

3.64 L5 Inverter Compressor Abnormality

3.75 P1 Open Phase or Power Supply Voltage Imbalance

3.83 U0 Refrigerant Shortage

3.86 U1 Reverse Phase

3.87 U2 Insufficient Voltage

3.105 UF Mis-connection of Field Wiring

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

Daikin FH26NUV1 Specifications

General

Brand	Daikin
Model	FH26NUV1
Category	Air Conditioner
Language	English