Mitsubishi Electric Mr.SLIM PUZ-A42NHA5-BS Service Manual page 47

10-6. HOW TO CHECK THE PARTS
PUZ-A42NHA5
PUY-A42NHA5
Parts name
Thermistor (TH3) Disconnect the connector then measure the resistance with a tester.
<Outdoor pipe>
(At the ambient temperature 10 ~30 , 50°F~86°F)
Thermistor (TH6)
<Outdoor 2-phase pipe>
Thermistor (TH7)
<Outdoor>
Thermistor (TH8)
<Heatsink>
Thermistor (TH32)
<Shell>
Fan motor (MF1,MF2) Refer to next page.
Solenoid valve coil Measure the resistance between the terminals with a tester.
(At the ambient temperature 20 , 68°F)
<Four-way valve>
(21S4)
Measure the resistance between the terminals with a tester.
Motor for compressor
(Winding temperature 20 , 68°F)
(MC) U
V
W
Linear expansion valve
Disconnect the connector then measure the resistance with a tester.
(Winding temperature 20 , 68°F)
(LEV-A)
Gray
M
1
2
Orange
3
Red
4
Yellow
5
Black
6
OCH512
PUZ-A42NHA5-BS
PUY-A42NHA5-BS
Normal
TH32 160k ~410k
TH3
TH6 4.3k ~9.6k
TH7
TH8 39k ~105k
Normal
A42
2350 170
Normal
A42
0.302
Gray - Black Gray - Red
Check points
Abnormal
Open or short
Normal
Gray - Yellow Gray - Orange
46 3
47
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short