138
[20] Indoor Thermal Overload
Reconnect
If sensor terminal is
fixed well
If sensor resistor /
characteristic is proper
If indoor air passage is
patency
If system is lack of refrigerant
Replace sensor
Modify air passage
N
N
Y
Y
N
N
Charge refrigerant
Y
If stop valve is open
N
Check the system piping
N
If PMV coil is connection well
Y
Reconnect
N
If ambient
temperature is too
high
Y
Repalce PCB
N