if sensor terminal is fixed well
no
yes
reconnect
no
yes
replace sensor
if sensor resistor
/characteristic is proper
check if PCB is faulty,
if yes, replace it
[27] protection of oil temperature too high
if sensor terminal is fixed well
no
yes
reconnect
no
yes
replace sensor
if sensor resistor
/characteristic is proper
replace connecting
board
charge refrigerant
if the system is lack of
refrigerant
yes
no
[20~24]
temperature sensor failure
1
5
.
Trouble shooting
78