ESIE16-02B
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Part 2. Troubleshooting
2.2. Error based troubleshooting
Page 40
4/04/17
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Version 1.1
RA R32 Split & multi split M-Series
More info:
2.2.3.4. “U7-00” – Transmission outdoor unit-outdoor unit abnormality
More info:
2.2.3.5. “UA-00” – Improper combination of indoor unit and outdoor unit
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 outdoor fan motor.
Check the fan motor.
Check fan motor connections and wiring.
Replace fan motor when required.
Adjust wiring when required.
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
"Fan motor" on page 51
"Replacing DC fan motor assembly" on page 79
Trigger
Effect
Reset
Communication abnormality between out-
door unit PCB's.
Unit will stop operating.
Manual reset via user interface.
Possible cause
Check
Corrective action
Faulty wiring between outdoor unit PCBs.
Check wiring between outdoor unit PCBs.
Adjust wiring between outdoor unit PCBs
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.
Adjust the power to the outdoor main
PCB.
Replace outdoor main PCB when HAP
LED is not blinking in regular intervals.
Faulty outdoor inverter PCB.
Check outdoor inverter PCB.
Check if the alive led is blinking in regular
intervals.
Check if the correct spare part is installed.
Adjust the power to the outdoor inverter
PCB.
Replace outdoor inverter PCB.
Check procedures
Replacing procedures
"Replacing main PCB" on page 84
Trigger
Effect
Reset
Signal transmission between indoor unit
and outdoor unit abnormality.
Unit will stop operating.
Power reset via outdoor unit.
Possible cause
Check
Corrective action