Daikin FDMG26NUV1 User Manual

Pocket
Manual
Service Diagnosis
Si20 - 701_B

Daikin FDMG26NUV1 Specifications

General

Heating Capacity	29000 BTU
Power Supply	220-240V, 50Hz, 1 Phase
Indoor Unit Dimensions (W x H x D)	1280 x 700 x 248 mm
Indoor Unit Weight	32 kg
Outdoor Unit Dimensions (W x H x D)	900 x 770 x 320 mm
Cooling Capacity	2.6 kW

Summary

Symptom-based Troubleshooting

2.2 Equipment does not Operate

Troubleshooting steps for when the equipment fails to start or operate.

2.3 Indoor Unit Fan Operates, but Compressor does not Operate

Diagnosing issues when the indoor fan runs but the compressor does not.

2.4 Cooling / Heating Operation Starts but Stops Immediately

Troubleshooting for operations that start briefly and then stop.

2.6 Equipment Operates but does not Provide Cooling

Troubleshooting for units that run but fail to deliver cooling.

2.7 Equipment Operates but does not Provide Heating

Troubleshooting for units that run but fail to deliver heating.

Troubleshooting by Remote Controller

3.1 Procedure of Self-diagnosis by Remote Controller

Steps for performing self-diagnosis using the remote controller.

3.2 Error Codes and Description

A catalog of error codes and their general descriptions for indoor units.

3.3 Detailed Error Codes

Detailed explanations and diagnostic steps for specific error codes.

3.4 A0 Error of External Protection Device

3.5 A1 Indoor Unit PCB Abnormality

Diagnosing abnormalities with the indoor unit's Printed Circuit Board (PCB).

3.6 A3 Drain Water Level System Abnormality

3.7 A6 Indoor Unit Fan Motor Abnormality

3.10 A8 Abnormal Power Supply Voltage

3.21 E0 Actuation of Safety Device

3.23 E1 Outdoor Unit PCB Abnormality

Troubleshooting abnormalities related to the outdoor unit's PCB.

3.28 E4 Low Pressure System Abnormality

3.32 E5 Compressor Motor Lock

Troubleshooting compressor motor lock issues.

3.33 E6 Compressor Overcurrent

3.34 E7 Outdoor Unit Fan Motor Abnormality

3.35 E9 Electronic Expansion Valve Abnormality

3.41 H3 High Pressure Switch Abnormality

3.43 H4 Low Pressure Sensor System Abnormality

3.47 J1 Pressure Sensor Abnormality

3.54 JA High Pressure Sensor Abnormality

3.56 L1 Outdoor Unit PCB Abnormality

Troubleshooting abnormalities with the outdoor unit's PCB.

3.57 L1 Outdoor Inverter PCB Abnormality

Diagnosing abnormalities with the outdoor inverter PCB.

3.59 L4 Overcurrent of DC Output (Instantaneous)

3.74 P1 Inverter Over-Ripple Protection

3.75 P1 Open Phase or Power Supply Voltage Imbalance

3.83 U0 Refrigerant Shortage

Troubleshooting refrigerant shortage issues.

3.86 U1 Reverse Phase

3.87 U2 Insufficient Voltage

Troubleshooting insufficient voltage conditions.

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

3.94 U5 Transmission Error Between Indoor Unit and Remote Controller

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

3.105 UF Mis-connection of Field Wiring

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