Daikin FTXS-A Series Technical Manual page 37

Error Codes Error Description
Compressor lock/start-up
E6
error
E7 Outdoor DC fan motor lock
E8 Ac input over current
EA 4-way valve error
F3 Discharge pipe overheat
F6 Heat exchanger overheat
Compressor sensor
H0
system abnormality
Position sensor
H6
abnormality
H8 AC current sensor error
Outdoor air thermistor
H9
short/open
Compressor discharge
J3 pipe thermistor short/open/
misplaced
1. Check with inverter checker.
2. Check the EXV.
1. Check the fan motor connection.
2. Check if foreign matters exist around or in the fan.
1. Measure the input current.
2. Check the main circuit electrolytic capacitor.
3. Check with inverter checker.
4. Check discharge pressure.
5. Check the installation condition.
1. Check 4WV coil connection.
2. Check the continuity of the 4WV coil and harness.
3. Check the 4WV switching output.
4. Check sensor connection.
5. Check sensor resistance value.
6. Check the refrigerant line on blockage or shortage.
1. Check the discharge pipe sensor.
2. Check the EXV.
3. Check the refrigerant line on blockage or shortage.
1. Check the installation space.
2. Check the outdoor fan.
3. Check the EXV.
4. Check the coil sensor.
1. Check the reactor connection.
2. Check the compressor connection.
3. Measure the resistance value between the reactor
terminals.
4. Measure the resistance value between the compressor
terminals.
1. Check for short circuit.
2. Check the electrolytic capacitor voltage.
3. Check compressor harness wire.
4. Check with inverter checker.
1. Restart the system.
2. Check capacitor voltage.
3. Measure the rectifier input voltage.
4. Check compressor harness wire.
5. Check with inverter checker.
1. Check the sensor connection.
2. Check the sensor resistance value.
1. Check the sensor connection.
2. Check the sensor resistance value.
3. Check indoor coil sensor resistance value.
Troubleshooting
Action
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