ESIE16-02K
|
Part 2. Troubleshooting
2.2. Error based troubleshooting
31/05/21
|
Version 1.1
Page 43
RA R32 Split & multi split M-Series
More info:
2.2.3.8. “UF-00” – Wiring and piping mismatch
More info:
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.
Standby electricity saving mode is ON but
there is a sky-air indoor installed on the
unit.
If the indoor unit is NOT a sky-air indoor.
This mode is only compatible with split
indoor units.
Put “standby electricity saving function”
OFF (see installation manual).
Check procedures
Replacing procedures
"Replacing main PCB" on page 85
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
Possible cause
Check
Corrective action