Sinclair ASGE-18AI - 2.2 Typical Troubleshooting for A series Outdoor Unit Drive (Inverter) by Single-phase Motor

DC INVERTER U-MATCH AIR CONDITION MAINTENANCE
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2.2 Typical Troubleshooting for A series Outdoor Unit Drive (Inverter) by Single-phase Motor
(Applicable to
ASGE-18AI, ASGE-24I, ASGE-36AI)
PFC module protection◆
E5 displayed on
wired controlle
r
(overcurrent
protection)
Monitor display
Mainboard indicator
PFC abnorma
Dark Bright Bright
Dark Blink Bright
Cut off the power for 1 minute
or reduce the busbar voltage
to 36V or lower. Then, switch
on the power again and start
the machine to run a period o
f
time. After that, check if the
fault disappears.
If the connection cable
has problem?
Reconnect or
replace the cable
If the DC voltage is
stabilized a
t
380±10V after the
voltage has risen.
PFC board
damaged. Replace
with a new PFC
board
If the power voltage
is too low?
Check if the PFC
module screws are
well tightened?
Normal overcurrent
protection
Overheat protection.
Tighten the screws.
Caused by interference.
Check if the high-current
cables are separated from
low-current cables.
Record and feed back
Yes
Yes
Yes
Yes
Yes
No
No
No
No No