Mitsubishi Lossnay LGH-150RVXT-E Handbook page 34

(6) Temperatures and thermistor resistance table
Temperature Resistance
(°C) value (kΩ)
-30 53.9 to ∞
-20 32.8
-19 31.2
-18 29.8
-17 28.4
-16 27.1
-15 25.8
-14 24.7
-13 23.6
-12 22.5
-11 21.5
-10 20.6
-9 19.7
-8 18.8
* Measure the indoor air (RA) thermistor resistance across pin No. 1 and 2 of CN5, and the outdoor air (OA)
thermistor resistance across pin No. 1 and 2 of CN22.
(7) Motor resistance table
Cautions:
• Before disconnecting the motor connectors, make sure that the power is turned OFF and the circuit board is
discharged adequately. Disconnecting the live-line connectors will cause a motor malfunction.
• Even after the power supply is cut off, the capacitor is charged. Therefore, high voltage is applied to the mo-
tor for a while. Make sure that the LEDs on the circuit board are turned OFF before starting work.
• Never touch the circuit board while the power is ON. It causes electric shock and failure of the unit.
Replace the motor in the following cases.
1 If it is hard to rotate the motor shaft by hand
2 If the resistance between the motor leads is significantly different from the values specified in the table below
*Before measuring the resistance, the motor connectors must be disconnected from the circuit board.
Lead color
Normal resistance
Lead color
Normal resistance
Temperature Resistance Temperature
(°C) value (kΩ)
-7 18.0
-6 17.2
-5 16.5
-4 15.7
-3 15.1
-2 14.5
-1 13.8
0 13.3
1 12.8
2 12.2
3 11.7
4 11.2
5 10.7
6 10.3
7 10.0
LGH-150RVXT-E, LGH-200RVXT-E
Black-Red
∞ Ω
LGH-250RVXT-E
Black-Red
About 1 MΩ
Resistance Temperature
(°C) value (kΩ)
8 9.5
9 9.2
10 8.8
11 8.5
12 8.1
13 7.8
14 7.6
15 7.3
16 7.0
17 6.7
18 6.5
19 6.3
20 6.0
21 5.8
22 5.6
Black-White Black-Yellow
About 50 kΩ About 150 kΩ
Black-White Black-Yellow
About 48 kΩ About 155 kΩ
─ 34 ─
Resistance Temperature
(°C) value (kΩ) (°C)
23 5.4
24 5.1
25 5.0
26 4.8
27 4.7
28 4.5
29 4.3
30 4.2
31 4.0
32 3.9
33 3.7
34 3.6
35 3.5
36 3.4
37 3.2
Black-Blue
∞ Ω
Black-Blue
∞ Ω
Resistance
value (kΩ)
38 3.1
39 3.1
40 3.0
41 2.8
42 2.7
43 2.7
44 2.6
45 2.5
46 2.4
47 2.3
48 2.2
49 2.2
50 2.1
90 0 to 0.7