Symptom: Water Leakage; Symptom: Electrical Leakage; Symptom: Unit Does Not Function Or Burn Damage; Fault Diagnosis Using Led On Outdoor Unit Pcb - Daikin R32 split Series Installer's Reference Manual

11 | Troubleshooting

11.3.3 Symptom: Water leakage

11.3.4 Symptom: Electrical leakage

11.3.5 Symptom: Unit does NOT function or burn damage

11.4 Fault diagnosis using LED on outdoor unit PCB

Installer reference guide
56
Possible causes
Gas leakage
Possible causes
Incomplete thermal insulation (gas and
liquid piping, indoor portions of the
drain hose extension)
Improperly connected drainage
Possible causes
The unit is NOT earthed correctly
Possible causes
The wiring was NOT performed in
accordance with the specifications
LED is...
flashing
ON
OFF
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.
Check for gas leakage.
Make sure the thermal insulation of the
piping and the drain hose is complete.
Secure the drainage.
Check and correct the connection of the
earth wiring.
Correct the wiring.
Diagnosis
Normal.
▪ Check the indoor unit.
▪ Turn the power OFF and back ON, and check the LED
within approximately
If the LED is ON again, the outdoor unit PCB is faulty.
1 Supply voltage (for power saving).
2 Power supply fault.
3 Turn the power OFF and back ON, and check the
LED within approximately
If the LED is OFF again, the outdoor unit PCB is
faulty.
ARXM50~71+RXM42~71N2V1B(9) + RXP50~71M2V1B +
RXA42+50+RXF50+60B2V1B + RXF71A2V1B + RXJ50N2V1B +
Corrective action
Corrective action
Corrective action
Corrective action
3 minutes.
3 minutes.
ARXF50~71A2V1B
R32 split series
4P513661-7H – 2019.12