Technical Information
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YES
YES
1. Capacity charging malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit)
Main detection point:
• Detect if the voltage of L and N terminal of wiring board is between 210AC-240AC by alternating
voltage meter;
• Is reactor (L) well connected? Is connection wire loosened or pulled out? Is reactor (L) damaged?
Malfunction diagnosis process:
Turn on unit and wait 1 minute
Use DC voltmeter to measure the voltage
on the two ends of electrolytic capacitor
Voltage higher than 200V?
Measure AC voltage between terminal L
and N on wiring board XT(power supply)
Shut down power and wait 20 minutes; or
use DC voltmeter to measure the voltage
on the two ends of capacitor, (test 3) until
the voltage is lower than 20V
Voltage within
210VAC~250VAC?
Check the connection of the reactor
(L in the Electrical Wiring Diagram)
Is the wiring of reactor L is normal?
Replace the control panel AP1
End
Fault with voltage
testing circuit on
control panel AP1
Replace control
panel AP1
Shut down power and
repair the power supply
to restore range
210VAC~250VAC
Power on and
restart unit
Is fault
eliminated?
Connect reactor
L according to
Electrical Wiring
Diagram correctly
Turn on unit
Is the fault
eliminated?
NO
NO
YES
NO
NO
NO
YE
S
YE
S