SERVICE MANUAL
R
−
410A Ductless Split System: DLF4(A/H), DLC4(A/H)
60
421 08 9204 00
9.3 Basic System Check
Applicable for 09 & 12K model
(1) Capacitor charge fault (Fault with outdoor unit)(AP1 below refers to the outdoor control panel)
Main Check Points:
Use AC voltmeter to check if the voltage between ter-
minal L and N on the wiring board is within 210 AC
~
240
VAC.
Is the reactor (L) correctly connected? Is the connection
loose of disconnected? Is the reactor (L) damaged?
Fault diagnosis process:
N
Y
N
Y
N
Y
N
Y
N
Y
Turn on the unit
and wait 1 minute
Use DC voltmeter
capacitor
Voltage higher than 200V?
Fault with the voltage
Replace the control
panel AP1
Measure the AC voltage between
terminal L and N on wiring
XT (power supply)
Shut down the power
and repair the power
supply to restore the
range
210VAC~250VAC
power on and
restart the unit
If the fault is
eliminated?
Shut down the power and wait 20 minutes; or
on the two ends of capacitor , until the
voltage is lower than 20V
(L in the Electrical
Wiring Diagram)
If the wiring of reactor
Connect the reactor
according to Elec
−
trical Wiring Diagr
−
am correctly
Re
−
energize and
turn on the unit
If the fault is
eliminated?
End
Replace the control
panel AP1
to measure the
voltage on the two
ends of electrolytic
testing circuit on
control panel AP1
use DC voltmeter to measure the voltage on
Check the
connection of the reactor
L is normal?
Voltage within
210VAC
−
250VAC
