Model reference
Daikin FTXR18TVJUW
Heat Pump
1 document30 error codes6 service modes
Available documentation
Service Manual
- Service Manual Inverter Pair Wall Mounted Type FTXR-T Series144 pg
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Error codes (30)
CodeMeaning
00Normal operation, no fault detected.A1Indoor unit PCB abnormality; the system cannot set the internal settings.A5Freeze-up protection control (cooling) or heating peak-cut control (heating)…A6Indoor fan motor (DC motor) or related abnormality; detected rotation speed…C4Indoor heat exchanger thermistor or related abnormality.C7Front panel open/close fault.C9Room temperature thermistor or related abnormality.E1Outdoor unit PCB abnormality; microprocessor runs out of control or zero-cross…E5OL activation (compressor overload) detected through compressor OL.E6Compressor lock detected by the current waveform when applying high-frequency…E7DC fan lock; the outdoor fan does not start within 15-30 seconds.E8Input overcurrent detection; current exceeds approximately 12.0-12.5 A for 2.5…EAFour way valve abnormality; room and heat exchanger thermistors not functioning…F3Discharge pipe temperature control; discharge pipe thermistor temperature…F6High pressure control in cooling; outdoor heat exchanger thermistor temperature…F8System shutdown due to compressor internal temperature abnormality; discharge…H0Compressor system sensor abnormality; DC current voltage before compressor…H6Position sensor abnormality; compressor start-up failure detected by the…H8DC voltage/current sensor abnormality identified based on compressor running…H9Outdoor temperature thermistor or related abnormality.J3Discharge pipe thermistor or related abnormality; discharge pipe temperature is…J6Outdoor heat exchanger thermistor or related abnormality.L3Electrical box temperature rise detected by radiation fin thermistor with…L4Radiation fin temperature rise detected by radiation fin thermistor with…L5Output overcurrent detection in the inverter DC section.P4Radiation fin thermistor or related abnormality.U0Refrigerant shortage detected.U2Low-voltage detection or over-voltage detection on the DC bus.U4Signal transmission error between indoor unit and outdoor unit.UAUnspecified voltage between indoor unit and outdoor unit; pair type and multi…Service modes (6)
- Forced Cooling Operation (via ON/OFF switch)["Ensure the outdoor unit is not abnormal, not in 3-minute standby, and not operating.","Press…
- Forced Cooling Operation (via remote controller)["Press Mode button and select cooling operation.","Press On/Off button to turn on the…
- Power Transistor Test Mode["Turn the power on.","Select FAN operation with Mode button on the remote controller.","Press the…
- Service Diagnosis Method 1["Hold Timer Cancel button for 5 seconds until 00 is displayed on the temperature display…
- Service Diagnosis Method 2["Press the center of Temp button and Mode button at the same time.","5C is displayed on the…
- Trial Operation["Press On/Off button to turn on the system.","Press the center of Temp button and Mode button at…
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