Mitsubishi Electric Mr.Slim PUZ-HA42NKA Service Manual page 53

10-8. EMERGENCY OPERATION
Inspected content
Check code
U4 Open/short of thermistor (TH3/TH6/TH7/TH32/TH8)
Open of pressure sensor (T
–
Communication error other than outdoor unit
(2) Check the following items and cautions for emergency operation
1
2
3
4
5
(3) Emergency operation procedure
1
2
3
4
5
(4) Releasing emergency operation
1
2
3
4
OCH567
)
63HS
SW4
CN31
Heating
ON
1 2 Cooling ON
Shorting pins
OFF
SW4
Heating
ON
1 2 Cooling