Carrier 40QSM009DS Service Manual page 108

High temperature protection of IPM board diagnosis and solution (P2)
High temperature protection of IPM
High temperature protection of IPM
board
board
Check whether the radiator
Check whether the radiator
is fixed well ?
is fixed well ?
Yes
Check whether electronic
Check whether electronic
control box is Installed
control box is Installed
good?
good?
Yes
Check whether thermal
Check whether thermal
grease is no coating or
grease is no coating or
uneven coating?
uneven coating?
Yes
Replace IPM board
Replace IPM board
No
Fix the radiator well
Fix the radiator well
Install the electronic control box
Install the electronic control box
No
correctly
correctly
No
Coat thermal grease again
Coat thermal grease again
105