Daikin RXF50D5V1B, Руководство по установке для специалистов, Страница: 64 / 76

15 | Troubleshooting
Installer reference guide
64
RXF50~71D5V1B
R32 split series
4P519439-15Q – 2021.10
15.3.2 Symptom: The unit is NOT heating or cooling as expected
Possible causes Corrective action
Wrong connection of the electrical
wires Connect the electrical wires correctly.
Gas leakage Check for gas leakage.
15.3.3 Symptom: Water leakage
Possible causes Corrective action
Incomplete thermal insulation (gas and
liquid piping, indoor portions of the
drain hose extension) Make sure the thermal insulation of the
piping and the drain hose is complete.
Improperly connected drainage Secure the drainage.
15.3.4 Symptom: Electrical leakage
Possible causes Corrective action
The unit is NOT earthed correctly Check and correct the connection of the
earth wiring.
15.3.5 Symptom: Unit does NOT function or burn damage
Possible causes Corrective action
The wiring was NOT performed in
accordance with the specifications Correct the wiring.
15.4 Fault diagnosis using LED on outdoor unit PCB
LED is… Diagnosis
flashing Normal.
▪ Check the indoor unit.
ON ▪ Turn the power OFF and back ON, and check the LED
within
approximately 3 minutes.
If the LED is ON again, the outdoor unit PCB is faulty.
OFF 1 Supply voltage (for power saving).
2 Power supply fault.
3 Turn the power OFF and back ON, and check the
LED
within approximately 3 minutes.
If the LED is OFF again, the outdoor unit PCB is
faulty.
DANGER: RISK OF ELECTROCUTION
▪
When the unit is not operating, the LEDs on the PCB are turned off in order to
save power.
▪
Even when the LEDs are OFF, the terminal block and the PCB may be powered.