ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
4/04/17 | Version 1.1 Page 41
RA R32 Split & multi split M-Series
More info:
2.2.3.6. “UF-00” – Wiring and piping mismatch
More info:
2.2.4. Others
Not applicable.
Possible cause Check Corrective action
Improper combination of indoor unit and
outdoor unit.
Check combination. Adjust installation when required.
Wiring abnormality between indoor unit
and outdoor unit.
Check wiring between indoor unit and out-
door unit.
Adjust wiring between indoor unit and out-
door unit when required.
Replace wiring between indoor unit and
outdoor unit when required.
Faulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives
power.
Restore the power to the outdoor main
PCB.
Replace outdoor main PCB when HAP
LED is not blinking in regular intervals.
Faulty indoor unit main PCB. Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check if the indoor main PCB receives
power.
Restore the power to the indoor main
PCB.
Replace indoor main PCB when HAP LED
is not blinking in regular intervals.
Check procedures Replacing procedures
"Main PCB" on page 53 "Replacing main PCB" on page 84
Trigger Effect Reset
When the interunit wiring between indoor
and outdoor unit is incorrect.
Piping abnormality.
Unit will stop operating. Automatic reset.
Possible cause Check Corrective action
Faulty wiring between indoor and outdoor
unit.
Check wiring between indoor and outdoor
unit.
Correct wiring.
Refrigerant shortage (incorrect
charge/leakage).
Check for refrigerant shortage.
Perform a leak test.
If required, repair the leak and charge the
correct amount of refrigerant.
Refrigerant circuit is clogged. Check for possible blockage (Blockages
can be checked by measuring the refriger-
ant/pipe temperature. Sudden drop in
temperature could indicate a blockage.
(Remark: This is not valid for the expan-
sion valve.)).
Check procedures Replacing procedures
"Wiring diagram" on page 98
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