Mitsubishi Electric MXZ-2A20NA - 1, Руководство по обслуживанию

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12-5. TROUBLE CRITERION OF MAIN PARTS
MXZ-2A20NA MXZ-2A20NA -
1
MXZ-2A20NA -
2
MXZ-3A30NA MXZ-3A30NA -
1
MXZ-4A36NA
Normal
Discharge temperature
thermistor (RT62)
Fin temperature
thermistor (RT64)
WHT - RED
RED - ORN
Measure the resistance using a tester. (Part temperature: 14°F ~ 104°F)
37.4 Ω ~ 53.9 Ω
Part name Check method and criterion
1.2 k Ω ~1.56 k Ω
Measure the resistance between terminals using a tester.
(Winding temperature: 14°F ~ 104°F)
Compressor
W
U
V
WHT
RED
BLK
LEV
WHT
U
RED
WHT
BLK
V
W
(W)
(V)
(U)
RED
YLW BRN
ORN
BLU
Measure the resistance between lead wires using a tester.
(Part temperature: 14°F ~ 104°F)
Outdoor fan motor
R.V. coil
Measure the resistance using a tester. (Part temperature: 14°F ~ 104°F)
Linear expansion valve
Color of lead wire Normal
YLW - BRN
BRN - BLU
Normal (Each phase)
13.4 Ω ~ 16.4 Ω
Pressure Normal
HPS
537 ± 22 PSIG
696 PSIG Open
Close
High pressure switch
(HPS)
MXZ-3A30NA
MXZ-4A36NA
MXZ-3A30NA -
1
Defrost thermistor (RT61)
Ambient temperature
thermistor (RT65)
Outdoor heat exchanger
temperature thermistor
(RT68)
Gas pipe temperature
thermistor (RT6A~C)
MXZ-2A20NA
MXZ-3A30NA
Measure the resistance with a tester.
Refer to 12-7. “Test point diagram and voltage”,1. “Outdoor electronic control P. C.
board”, or 3. “Outdoor power board” , for the chart of thermistor.
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
Refer to 12-7. “Test point diagram and voltage”,1. “Outdoor electronic control P. C.
board”, for the chart of thermistor.
+ 7
-
15
MXZ-2A20NA-
1 2 ,
MXZ-2A20NA
0.39 Ω ~ 0.49 Ω 0.86 Ω ~ 1.06 Ω 1.29 Ω ~ 1.49 Ω
Normal (Each phase)
MXZ-3A30NA
MXZ-4A36NA
MXZ-3A30NA -
1