Haier GE APPLIANCES Connect Series, Service Manual

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CONNECT SERIES SERVICE MANUAL
32
ENGLISH
Troubleshooting
“P7” Driver Module Sensor Error
Error display:
ODU main board LED display
Error judgment condition and method:
If IPM or PFC module temperature is lower than the
set protection value, then it can be judged that driver
module sensor error occurs and system will shut down
for protection.
Possible causes:
• Module temperature sensor is short-circuited or open.
• Drive board current sampling circuit element is
damaged or drive chip current sampling AD terminal
is abnormal.
“P8” Driver Module High Temperature Protection
Error display:
ODU main board LED display
Error judgment condition and method:
If IPM module temperature or PFC module temperature
exceeds the set protection value, then it can be judged
that driver module temperature is too high and system
will shut down for protection.
Possible causes:
• Thermal grease is not applied or not evenly applied to
the module, or there is other substance on the back of
the module.
• The module securing screws are not tight.
• Drive board temperature sampling circuit element
is damaged or drive chip temperature sampling AD
terminal is abnormal.
Start
P7 Driver module sensor error
Replace the drive board
No
Yes
Yes
No
Start
PB Driver module high
temperature protection
Thermal grease is not applied
or not evenly applied to the
module? Is there foreign matter
on the back of the module?
Apply the thermal
grease evenly. Remove
the foreign matter.
The module securing
screws are not
tightened?
Replace the
drive board
Tighten the
screws