Sinclair ASGE-18AI - 2.3 Typical Troubleshooting for ASGE-xxAI-3 series Outdoor Unit Drive (Inverter) by Three-phase Motor

DC INVERTER U-MATCH AIR CONDITION MAINTENANCE
122
2.3 Typical Troubleshooting for A
SGE-xxAI-3 series Outdoor Unit Drive (Inverter) by Three-phase Motor
Applic
able to (ASGE-36AI-3, ASGE-42AI-3)
◆Driver board module protection
E5 displayed
on
wired
controller
(overcurrent
protection)
Monitor display
Mainboard indicator
Driver board indicator
IPM protection
Bright bright
bright blink
blink bright
Blink Dark
Blink
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 of time.
After that, check if the fault
appears again.
Wrong judgment caused by
interference. Please check i
f
there is source of interference
around or if the cabling inside
the electric box is correct
If the compressor is
started and runnin
g?
I. Check if the cable connection L1, L2, L3 and N
is correct.
II. Use multimeter to test the quality of input
power and observe if there is high fluctuation
between two power cables.
III. If the above is normal, please cut off the
power for 1 minute and then check as follows:
1) Check if the cable connections on driver board
are secure;
2) Check if the screws fixing the IPM module is
properly tightened. If not, it will cause module
overtemperature or IPM protection.
3) Check if the silicate gel beneath IPM module is
coated uniformly;
4) Take special care to check if the U14 module
pins on driver board are correctly connected;
5) Check if the radiator is dirty or blocked. If dirty
or blocked, it may cause poor radiation to the
module and thus result in protection.
6) If the above problems have been eliminated,
please check if the outdoor unit is in good
ventilation. Under cooling mode, outdoo
r
temperature too high may cause poor radiation to
IPM module and thus result in protection.
Cut off the power for 1 minute and then check
according to the procedures below:
1. Measure if IPM module is damaged.
Method: Remove UVW wires on compresso
r
and use the multimeter to measure the
resistance U-N, V-N, W-N, P-U, P-V and P-W
on driver board. It is normal if over 1MΩ. If not,
it indicates that the module is damaged, in
which case it is needed to replace the drive
r
board.
2. Check if the cable connections on drive
r
board are secure;
3. Take special care to check if the U14 module
pins on driver board are correctly connected;
Fault eliminated?
Check if the
compressor is
normal
Record and feed
back
Yes
No
No
No
Yes