SERVICE MANUAL
R
−
410A Ductless Split System: DLF4(A/H), DLC4(A/H)
70
421 08 9204 00
(1) Capacitor charging malfunction (outdoor unit malfunction)
D5
D6
D16
D30
Detection:
Detect if the voltage of L and N terminal of wiring board
is between 210AC
~
240AC by AC volt meter;
Is reactor (L) well connected? Is connection wire loose
or disconnected? Is reactor (L) damaged?
Malfunction diagnosis process:
Turn on the unit
and wait 1 minute
Voltage within
210VAC~250VAC?
Measure the AC voltage between
terminal L and N on wiring board
XT(power supply)
Shut down the power
and repair the power
supply to restore the
range
210VAC~250VAC
N
power on and
restart the unit
If the fault is
eliminated?
Shut down the power and wait 20n muties; or
use DC voltmeter to measure the voltage
on the two ends of capacitor (test3), until
the voltage is lower than 20V
Check the
connection of reactor
(L in the Electrical
Wiring Diagram)
If the wiring of
reactor L is normal?
Connect the reactor
Laccording to
Electrical Wiring
Diagram correctly
Re
−
energize and
turn on the unit
If the fault is
eliminated?
Use DC voltmeter
to measure the
voltage on the two
ends of electrolytic
capacitor
Voltage higher than 200V?
Fault with the voltage
testing circuit on
control panel AP1
Replace the control
panel AP1
Replace the control
panel AP1
Y
N
Y
N
Y
End
N
Y
N
Y
