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Parts name
Check points
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 10:~30:, 50˚F~86˚F)
Disconnect the connector then measure the resistance with a tester.
(Winding temperature 20:, 68˚F)
Thermistor (TH3)
<Outdoor pipe>
Thermistor (TH4)
<Discharge>
Thermistor (TH6)
<Outdoor 2-phase pipe>
Thermistor (TH7)
<Outdoor>
Thermistor (TH8)
<Heatsink>
Normal
160k"~410k"
4.3k"~9.6k"
39k"~105k"
TH4
TH3
TH6
TH7
TH8
Abnormal
Open or short
Normal
Red - White Red - Orange
Brown - Yellow
Brown - Blue
Abnormal
46±4"
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20
:
, 68˚F)
Solenoid valve coil
<Four-way valve>
(21S4)
Motor for compressor
(MC)
Linear expansion valve
(LEV-A)
For A12, 18
Linear expansion valve
(LEV-A)
For A24-42
Normal
Abnormal
Open or short
A18-36 A42
Open or short
Disconnect the connector then measure the resistance with a tester.
(Winding temperature 20:, 68˚F)
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20:, 68˚F)
Normal
1450±150"
Abnormal
Open or short
Solenoid valve coil
<Bypass valve>
(SV)
For A24-36 only
Refer to next page.
Fan motor(MF1,MF2)
1500±150" 2350±170"
A12, 18
A42
0.320"
A24, 30, 36
0.880"
0.266"
Measure the resistance between the terminals with a tester.
(Winding temperature 20
:
, 68˚F)
Normal Abnormal
Open or short
W
V
U
Red
Brown
Blue
Orange
Yellow
White
Normal
Gray - Black Gray - Red
Gray - Yellow
Gray - Orange
Abnormal
46±3"
Open or short
10-6. HOW TO CHECK THE PARTS
PUZ-A18/24/30/36/42NHA2 PUZ-A18/24/30/36/42NHA2-BS
PUY-A12/18/24/30/36/42NHA2 PUY-A12/18/24/30/36/42NHA2-BS
OCH429--2.qxp 07.11.20 9:18 AM Page 55