Daikin FH42NUV1 - User Manual

Pocket
Manual
Service Diagnosis
Si20 - 701_B

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

Addresses issues where the indoor fan runs but the compressor remains inactive.

2.4 Cooling; Heating Operation Starts but Stops Immediately

Guides on diagnosing and resolving operations that start and then abruptly stop.

2.6 Equipment Operates but does not Provide Cooling

Outlines steps for troubleshooting when the unit runs but fails to cool.

2.7 Equipment Operates but does not Provide Heating

Provides guidance for diagnosing issues when the unit runs but fails to heat.

Troubleshooting by Remote Controller

3.1 Procedure of Self-diagnosis by Remote Controller

Explains how to perform self-diagnosis using the remote controller and interpret error codes.

3.2 Error Codes and Description

Lists and describes various error codes, categorizing them by indoor and outdoor unit system.

3.3 Detailed Error Codes

Provides in-depth explanations and diagnostic procedures for specific error codes.

3.4 A0 Error of External Protection Device

Addresses troubleshooting for error code A0, related to external protection device activation.

3.5 A1 Indoor Unit PCB Abnormality

Covers troubleshooting for error code A1, indicating an issue with the indoor unit PCB.

3.6 A3 Drain Water Level System Abnormality

Details troubleshooting for error code A3, related to drain water level system abnormalities.

3.7 A6 Indoor Unit Fan Motor Abnormality

Guides on diagnosing and resolving issues with the indoor unit fan motor.

3.11 A9 Electronic Expansion Valve Coil (Y1 E) Abnormality

Addresses troubleshooting for error code A9, indicating an abnormality in the electronic expansion valve coil.

3.12 AF Drain System Abnormality

Covers troubleshooting for error code AF, related to drain system abnormalities.

3.14 AJ Capacity Setting Abnormality

Details troubleshooting for error code AJ, indicating an issue with capacity setting.

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

Guides on resolving transmission errors between indoor unit PCB and fan PCB.

3.17 C4, C5, C9 Thermistor Abnormality

Covers troubleshooting for thermistor abnormalities indicated by error codes C4, C5, and C9.

3.21 E0 Actuation of Safety Device

Addresses troubleshooting for error E0, related to the actuation of safety devices.

3.23 E1 Outdoor Unit PCB Abnormality

Details troubleshooting for error E1, indicating an abnormality in the outdoor unit PCB.

3.24 E3 High Pressure System Abnormality

Guides on diagnosing and resolving high pressure system abnormalities indicated by error code E3.

3.28 E4 Low Pressure System Abnormality

Covers troubleshooting for error E4, related to low pressure system abnormalities.

3.32 E5 Compressor Motor Lock

3.33 E6 Compressor Overcurrent

3.34 E7 Outdoor Unit Fan Motor Abnormality

3.35 E9 Electronic Expansion Valve Abnormality

3.37 F3 Discharge Pipe Temperature 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

3.48 J2 Current Sensor System Abnormality

3.50 J5 Suction Pipe Thermistor Abnormality

3.56 L1 Outdoor Unit PCB Abnormality

3.59 L4 Overcurrent of DC Output (Instantaneous)

3.61 L5 Momentary Overcurrent of Inverter Compressor

3.63 L5 Output Overcurrent Detection

3.66 (L8) Electronic Thermal Switch (Time Lag)

3.70 L9 Stall Prevention (Time Lag)

3.71 L9 Inverter Startup Error

3.72 LC Transmission Error Between Inverter and Control PCB

3.75 P1 Open Phase or Power Supply Voltage Imbalance

3.79 PJ Error in Capacity Setting

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

3.95 U7 Transmission Error Between Outdoor Units

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

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

3.98 UA Defective Field Setting Switch

3.99 UA Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller

3.100 UA Field Setting Switch Abnormality

3.101 UA Field Setting Switch and Transmission Line Abnormality

3.102 UC Centralized Address Setting Error

3.103 UC Address Duplication of Centralized Controller

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

Daikin FH42NUV1 Specifications

General

Brand	Daikin
Model	FH42NUV1
Category	Air Conditioner
Language	English