Module protection
Normal
Replace the wiring
Replace power module
Replace compressor
Whether the compressor
is blocked or not
Test three-phase resistance
of compressor
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
Replace power module
Remove the obstruction,
clean and wash
Check whether the outdoor
unit heat exchanger radiating
is good or not
Normal
Normal
Normal
Normal
Normal
Evenly coated the
coolant on IPM
module then install
the power module
If the voltage between
PN is abnormal, then
should check the
PFC module
Use new compressor
for trial running, that
the original compressor
blocked
If it blinks 10 times
If it blinks 3 times
If there is malfunction
has been observed,
the power module
malfunction indicator
(RED) blinks for many
times
Firstly use multi-meter to test
DC voltage between power
module P and N, confirm
there is no voltage, pull out
the wire on P,N, U, V, W,
test resistance between
P-N, U-N,V-N, W-N, if there
is any resistance value is
0 that the module damaged
Power module overheat
protection, check whether
the coolant is coated evenly,
is there any obstruction in
installation position, whether
the screws on powre module
is tightened
Are the wire insert is firmed
inserted on power module
P,N,U,V,W or not;If there
is carbonization phenomenon
on the wiring terminal
Confirmed whether is there
any two phase between U,
V, W has voltage output and
balanceable
After unit turned on, test the
voltage between PN, if
compressor dosn’t start up,
the voltage is 310, if compressor
normally start up, the voltage
between PN is 380V
Содержание ACP-24COFM70GEI
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