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4. Troubleshooting
Issue
Sensor reads 1kΩ or less
Sensor or wires are shorted together or to ground.
Sensor reads 13kΩ or more Sensor or wires have been damaged and are open.
Loose wire connection or possibly moisture on the
Erratic readings
wires/sensor.
5. Setting Indoor Units
When the sensor is connected to the indoor unit and room temperature detection
position is changed, reset the setting of "Set temp 4-deg. Up" in the heating mode as
shown below:
• K control models
DIP switch Nos. 1-6 on the control PCB of the indoor unit
• M-NET control models DIP switch Nos. 3-8 on the control PCB of the indoor unit
• A control models
Refer to A-control air conditioner Service Technical Guide
6. Thermistor Calibration Table
Temperature
Resistance
[C °]
[Ω]
-20
42586.59
-19
40350.58
-18
38248.13
-17
36270.38
-16
34409.10
-15
32656.66
-14
31005.98
-13
29450.47
-12
27984.03
-11
26600.98
Thermistor Calibration Table (continued)
Temperature
Resistance
[C °]
[Ω]
48
2337.71
49
2260.60
50
2186.49
51
2115.25
52
2046.74
53
1980.85
54
1917.47
55
1856.48
56
1797.79
57
1741.29
58
1686.89
59
1634.50
60
1584.04
61
1535.43
62
1488.58
63
1443.43
64
1399.91
Specifications are subject to change without notice.
Possible Cause
Temperature
Resistance
[C °]
[Ω]
-10
25296.02
-9
24064.24
-8
22901.06
-7
21802.22
-6
20763.75
-5
19781.95
-4
18853.35
-3
17974.74
-2
17143.10
-1
16355.64
Temperature
Resistance
[C °]
[Ω]
65
1357.94
66
1317.47
67
1278.43
68
1240.77
69
1204.42
70
1169.35
71
1135.49
72
1102.80
73
1071.23
74
1040.74
75
1011.28
76
982.82
77
955.32
78
928.74
79
903.04
80
878.19
Thermistor Calibration Table (continued)
Temperature
Resistance
[C °]
[Ω]
0
15609.72
1
14902.90
2
14232.87
3
13597.50
4
12994.77
5
12422.81
6
11879.86
7
11364.26
8
10874.47
9
10409.03
10
9966.60
11
9545.90
12
9145.71
13
8764.93
14
8402.49
15
8057.40
16
7728.72
17
7415.58
18
7117.14
19
6832.64
20
6561.34
21
6302.55
22
6055.61
23
5819.92
This device is designed and intended for use in the residential,
commercial and light-industrial environment.
Please be sure to put the installer's contact address/telephone number on
this manual before handing it to the customer.
Manufactured for:
MITSUBISHI ELECTRIC US, INC.
www.mitsubishielectric-usa.com
Toll Free: 800-433-4822
MEUS DOC# MD-2222-K001, Ver. 1, April 2022
Temperature
Resistance
[C °]
[Ω]
24
5594.90
25
5380.00
26
5174.71
27
4978.54
28
4791.04
29
4611.78
30
4440.34
31
4276.33
32
4119.40
33
3969.20
34
3825.40
35
3687.69
36
3555.79
37
3429.40
38
3308.28
39
3192.17
40
3080.84
41
2974.07
42
2871.63
43
2773.34
44
2679.01
45
2588.44
46
2501.48
47
2417.95
© 2022 Mitsubishi Electric US, Inc.
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