Daikin FHC48NUV2S - User Manual

Pocket
Manual
Service Diagnosis
Si20 - 701_B

Daikin FHC48NUV2S Specifications

General

Model	FHC48NUV2S
Category	Air Conditioner
Refrigerant	R-32
Power Supply	3 Phase, 380-415V, 50Hz
Indoor Unit Noise Level	42 dB(A)
Outdoor Unit Noise Level	52 dB(A)

Summary

Symptom-based Troubleshooting

2.2 Equipment does not Operate

Troubleshooting steps for when the equipment does not operate.

2.3 Indoor Unit Fan Operates, but Compressor does not Operate

Troubleshooting for indoor fan operation without compressor activity.

2.4 Cooling; Heating Operation Starts but Stops Immediately

Troubleshooting for cooling/heating cycles that start and stop quickly.

2.5 After Unit Shuts Down, It cannot be Restarted for a While

Troubleshooting for delayed restart after unit shutdown.

2.6 Equipment Operates but does not Provide Cooling

Troubleshooting for units operating but not providing cooling.

2.7 Equipment Operates but does not Provide Heating

Troubleshooting for units operating but not providing heating.

Troubleshooting by Remote Controller

3.1.1 Wired Remote Controller - BRC1 C61;BRC1 D61

Self-diagnosis procedure for wired remote controller models BRC1C61/BRC1D61.

3.1.2 Wired Remote Controller - BRC1 E61

Self-diagnosis procedure for wired remote controller model BRC1E61.

3.1.3 Wireless Remote Controller

Procedure for self-diagnosis using a wireless remote controller.

3.2 Error Codes and Description

Details error codes and their descriptions for indoor and outdoor units.

3.3 Detailed Error Codes

Provides detailed descriptions and troubleshooting for specific error codes.

3.4 A0 Error of External Protection Device

Troubleshooting for A0 error related to external protection devices.

3.5 A1 Indoor Unit PCB Abnormality

Troubleshooting for A1 error indicating an indoor unit PCB abnormality.

3.6 A3 Drain Water Level System Abnormality

Troubleshooting for A3 error related to drain water level system abnormality.

3.7 A6 Indoor Unit Fan Motor Abnormality

Troubleshooting for A6 error related to indoor unit fan motor abnormality.

3.8 A6 Fan Motor (M1 F) Lock, Overload

Troubleshooting for A6 error related to fan motor lock or overload.

3.9 A7 Swing Flap Motor Abnormality; Lock

Troubleshooting for A7 error related to swing flap motor abnormality or lock.

3.10 A8 Abnormal Power Supply Voltage

Troubleshooting for A8 error indicating abnormal power supply voltage.

3.11 A9 Electronic Expansion Valve Coil (Y1 E) Abnormality

Troubleshooting for A9 error related to electronic expansion valve coil abnormality.

3.12 AF Drain System Abnormality

Troubleshooting for AF error related to drain system abnormality.

3.13 AF Drain Level above Limit

Troubleshooting for AF error indicating drain level is above the limit.

3.14 AJ Capacity Setting Abnormality

Troubleshooting for AJ error related to capacity setting abnormality.

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

Troubleshooting C1 error: Transmission between Indoor PCB and Fan PCB.

3.16 C1 Transmission Error (between Indoor Unit PCB and Adaptor PCB)

Troubleshooting C1 error: Transmission between Indoor PCB and Adaptor PCB.

3.17 C4, C5, C9 Thermistor Abnormality

Troubleshooting C4, C5, C9 errors related to thermistor abnormality.

3.18 C6 Defective Combination (between Indoor Unit PCB and Fan PCB)

Troubleshooting C6 error: Defective combination between Indoor PCB and Fan PCB.

3.19 CC Humidity Sensor System Abnormality

Troubleshooting CC error related to humidity sensor system abnormality.

3.20 CJ Remote Controller Thermistor Abnormality

Troubleshooting CJ error related to remote controller thermistor abnormality.

3.21 E0 Actuation of Safety Device

Troubleshooting E0 error related to safety device actuation.

3.22 E0 Activation of Outdoor Unit Protection Device

Troubleshooting E0 error related to outdoor unit protection device activation.

3.23 E1 Outdoor Unit PCB Abnormality

Troubleshooting E1 error related to outdoor unit PCB abnormality.

3.24 E3 High Pressure System Abnormality

Troubleshooting E3 error related to high pressure system abnormality.

3.25 E3 Abnormally High Pressure Level (HPS)

Troubleshooting E3 error for abnormally high pressure level (HPS).

3.26 E3 High Pressure Abnormality (HPS)

Troubleshooting E3 error for high pressure abnormality (HPS).

3.27 E3 Actuation of High Pressure Switch

Troubleshooting E3 error for actuation of the high pressure switch.

3.28 E4 Low Pressure System Abnormality

Troubleshooting E4 error related to low pressure system abnormality.

3.29 E4 Actuation of Pressure Sensor

Troubleshooting E4 error for actuation of the pressure sensor.

3.30 E4 Low Pressure Sensor System Abnormality

Troubleshooting E4 error related to low pressure sensor system abnormality.

3.31 E4 Low Pressure System Abnormality

Troubleshooting E4 error related to low pressure system abnormality.

3.32 E5 Compressor Motor Lock

Troubleshooting E5 error for compressor motor lock.

3.33 E6 Compressor Overcurrent

3.34 E7 Outdoor Unit Fan Motor Abnormality

3.35 E9 Electronic Expansion Valve Abnormality

3.36 E9 Electronic Expansion Valve Coil Abnormality

3.37 F3 Discharge Pipe Temperature Abnormality

3.38 F3 Discharge Pipe Temperature Control

3.39 F6 Abnormal Heat Exchanging Temperature

3.40 F6 Refrigerant Overcharged

3.41 H3 High Pressure Switch Abnormality

3.42 H3 High Pressure Switch System 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

3.46 H9 Outdoor Air Thermistor System Abnormality

3.47 J1 Pressure Sensor Abnormality

3.48 J2 Current Sensor System Abnormality

3.49 J3 Discharge Pipe Thermistor System Abnormality

3.50 J5 Suction Pipe Thermistor Abnormality

3.51 J6 Heat Exchanger Thermistor System Abnormality

3.52 J7 Liquid Pipe Thermistor Abnormality

3.53 J9 Subcooling Heat Exchanger Gas Pipe Thermistor Abnormality

3.54 JA High Pressure Sensor Abnormality

3.55 JC Suction Pipe Pressure Sensor Abnormality

3.56 L1 Outdoor Unit PCB Abnormality

3.57 L1 Outdoor Inverter PCB Abnormality

3.58 L1 Outdoor Unit PCB Abnormality

3.59 L4 Overcurrent of DC Output (Instantaneous)

3.60 L4 Radiation Fin Temperature Rise

3.61 L5 Overcurrent of DC Output (Instantaneous)

3.62 L5 Momentary Overcurrent of Inverter Compressor

3.63 L5 Output Overcurrent Detection

3.64 L5 Inverter Compressor Abnormality

3.65 L5 Output Overcurrent Detection

3.66 (L8) Electronic Thermal Switch (Time Lag)

3.67 L8 Inverter Current Abnormality

3.68 L8 Inverter Compressor Overcurrent

3.69 L8 Electronic Thermal (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

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

3.74 P1 Inverter Over-Ripple Protection

3.75 P1 Open Phase or Power Supply Voltage Imbalance

3.76 P4 Radiation Fin Thermistor Abnormality

3.77 P4 Radiation Fin Thermistor or Related Abnormality

3.78 PJ Defective Capacity Setting

3.79 PJ Error in Capacity Setting

3.80 PJ Field Setting Error after Replacing Main PCB or Defective Combination of PCB

3.81 PJ Defective Combination of Inverter and Fan Driver

3.82 PJ Defective Capacity Setting

3.83 U0 Refrigerant Shortage

3.84 U0 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure

3.85 U0 Refrigerant Shortage

3.86 U1 Reverse Phase

3.87 U2 Insufficient Voltage

3.88 U2 Power Supply Voltage Abnormality

3.89 U2 Power Supply Insufficient or Instantaneous Failure

3.90 U2 Power Supply Voltage Abnormality

3.91 U3 Check Operation is not Executed

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

3.93 U4 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 and Transmission Line 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