York EVJC 12, Installation Instructions Manual

Page: 175 / 204

247
3
ǃ
How to Check simply the main part
N
Y
N
Y
N
Y
N
Y
N
Y
(1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel)
Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC.
Main Check Points:
If the reactor (L) is correctly connected? If the connection is loose or fallen? If the reactor (L) is damaged?
Fault diagnosis process:
Switch on the unit
and wait 1 minute
Use DC voltmeter
to measure the
voltage on the two
ends of electrolytic
capacitor (test3)
Voltage higher than 200V?
Fault with the voltage
testing circuit on
control panel AP1
Replace the control
panel AP1
Measure the AC voltage between
terminal L and N on wiring board
XT
Voltage within
210VAC~250VAC?
Switch off the power
and repair the supply
power to restore the
voltage to
210VAC~250VAC
Re-energize and
switch on the unit
If the fault is eliminated?
Switch off the power and wait 20 minutes; 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 L
according to Electrical
Wiring Diagram
Re-energize and
switch on the unit
If the fault is eliminated?
End
Replace the control
panel AP1
Troubleshooting Guide