Mitsubishi Electric Mr. Slim PKA Series Service Manual page 31

9-6. HOW TO CHECK THE PARTS
PKA-M35HA
PKA-M35HA-ER
Parts name
Room temperature
thermistor (TH1)
Pipe temperature
thermistor/liquid(TH2)
Condenser/evaporator
temperature thermistor (TH5)
Vane motor (MV)
2
RD
M
4
YE
1
BN
OG GN
Connect pin No.
3 5
Fan motor (MF)
9-6-1. Thermistor
<Thermistor Characteristic Graph>
Thermistor for
lower temperature
Thermistor R =15k" ± 3%
0
Fixed number of B=3480 ± 2%
1
Rt=15exp { 3480(
273+t
0: 15 k"
10: 9.6 k"
20: 6.3 k"
25: 5.4 k"
30: 4.3 k"
40: 3.0 k"
OCH660A
PKA-M50HA
PKA-M50HA-ER
Disconnect the connector then measure the resistance with a tester.
Refer to "9-6-1. Thermistor".
Measure the resistance between the terminals using a tester. (Coil temperature 25:)
1-2 1-3
Brown-Red Brown-Orange
350" ± 7%
Refer to "9-6-2. DC Fan motor (fan motor/indoor controller circuit board)".
Room temperature thermistor (TH1)
Pipe temperature thermistor/liquid (TH2)
Condenser/evaporator temperature ther-
mistor (TH5)
1
) }
273
PKA-M35HAL
PKA-M35HAL-ER
Check points
Normal
1-4 1-5
Brown-Yellow Brown-Green
31
PKA-M50HAL
PKA-M50HAL-ER
< Thermistor for lower temperature >
50
40
30
20
10
0
-20 -10 0 10 20 30 40 50
Temperature (:)