Error code
Remote controller:
7-segment display:
LED
Green
Red
Indoor
Outdoor
Content
–
342
–
E28
Remote controller
temperature thermistor anomaly
Keeps flashing Stays Off
Keeps flashing Stays Off
1. Applicable model
5. Troubleshooting
All models
Diagnosis
Countermeasure
NO
YES
NO
YES
Is the remote
controller temperature thermistor
connected properly?
Are the
characteristics of remote
controller temperature thermistor OK?
Is the sensor wire OK?
Correct.
Defective remote controller
temperature thermistor
Replace.
Defective remote controller
PCB
Replace.
(Defective remote
controller temperature
thermistor input circuit)
2. Error detection method
Detection of anomalously low
temperature (resistance) of
remote controller temperature
thermistor (Thc)
3. Condition of error displayed
• When the temperature
thermistor detects -50°
C or lower for 5 seconds
continuously, the compressor
stops. After 3-minutes delay,
the compressor starts again
automatically, but if this
anomaly occurs again within
60 minutes after the initial
detection.
4. Presumable cause
• Faulty connection of remote
controller temperature
thermistor
• Defective remote controller
temperature thermistor
• Defective remote controller
PCB
Note:
After 10 seconds has passed since remote controller thermistor was switched from valid to invalid, E28 will not be displayed even if
the thermistor harness is disconnected. At same time the thermistor is switched from remote controller thermistor to indoor intake air
temperature thermistor.
Even though the remote controller thermistor is set to be Valid, the intake air temperature displayed on remote controller for checking still
shows the value detected by indoor intake air temperature thermistor, not by remote controller thermistor.
Resistance-temperature characteristics of remote controller temperature sensor (ThC)
Temperature (°C) Resistance value (kΩ) Temperature (°C) Resistance value (kΩ) Temperature (°C) Resistance value (kΩ) Temperature (°C) Resistance value (kΩ)
-30
88.05
-2
18.11
26
4.786
54
1.542
-29
82.81
-1
17.20
27
4.582
55
1.486
-28
77.90
0
16.33
28
4.388
56
1.432
-27
73.32
1
15.52
29
4.203
57
1.380
-26
69.03
2
14.76
30
4.027
58
1.330
-25
65.02
3
14.03
31
3.859
59
1.283
-24
61.27
4
13.35
32
3.699
60
1.237
-23
57.75
5
12.70
33
3.546
61
1.193
-22
54.46
6
12.09
34
3.401
62
1.151
-21
51.37
7
11.51
35
3.262
63
1.111
-20
48.48
8
10.97
36
3.130
64
1.072
-19
45.77
9
10.45
37
3.004
65
1.035
-18
43.22
10
9.956
38
2.883
66
0.9991
-17
40.83
11
9.490
39
2.768
67
0.9648
-16
38.59
12
9.050
40
2.658
68
0.9318
-15
36.48
13
8.632
41
2.553
69
0.9001
-14
34.50
14
8.235
42
2.453
70
0.8697
-13
32.63
15
7.860
43
2.357
71
0.8404
-12
30.88
16
7.503
44
2.266
72
0.8122
-11
29.23
17
7.164
45
2.178
73
0.7852
-10
27.68
18
6.843
46
2.094
74
0.7591
-9
26.22
19
6.538
47
2.014
75
0.7341
-8
24.85
20
6.248
48
1.938
76
0.7100
-7
23.55
21
5.973
49
1.864
77
0.6868
-6
22.33
22
5.711
50
1.794
78
0.6645
-5
21.18
23
5.462
51
1.727
79
0.6430
-4
20.10
24
5.225
52
1.663
80
0.6223
-3
19.07
25
5.000
53
1.601
81
0.6024
Summary of Contents for FDC112KXEN6
Page 116: ... 112 4 Sensible heat capacity ...
Page 117: ... 113 ...
Page 118: ... 114 ...
Page 119: ... 115 ...
Page 120: ... 116 ...
Page 121: ... 117 ...
Page 122: ... 118 ...
Page 123: ... 119 ...
Page 124: ... 120 ...
Page 125: ... 121 ...
Page 126: ... 122 ...
Page 127: ... 123 ...
Page 128: ... 124 ...
Page 129: ... 125 ...
Page 130: ... 126 ...
Page 131: ... 127 ...
Page 132: ... 128 ...
Page 133: ... 129 ...
Page 134: ... 130 ...
Page 135: ... 131 ...
Page 136: ... 132 ...
Page 137: ... 133 ...
Page 138: ... 134 ...
Page 139: ... 135 ...
Page 140: ... 136 ...
Page 141: ... 137 ...
Page 142: ... 138 ...
Page 143: ... 139 ...
Page 144: ... 140 ...
Page 145: ... 141 ...
Page 146: ... 142 ...
Page 147: ... 143 ...
Page 148: ... 144 ...
Page 149: ... 145 ...
Page 150: ... 146 ...
Page 151: ... 147 ...
Page 152: ... 148 ...
Page 153: ... 149 ...
Page 154: ... 150 ...
Page 155: ... 151 ...
Page 156: ... 152 ...
Page 157: ... 153 ...
Page 158: ... 154 ...
Page 159: ... 155 ...
Page 160: ... 156 ...
Page 161: ... 157 ...
Page 162: ... 158 ...
Page 163: ... 159 ...
Page 164: ... 160 ...
Page 165: ... 161 ...
Page 166: ... 162 ...
Page 167: ... 163 ...
Page 168: ... 164 ...
Page 169: ... 165 ...
Page 170: ... 166 ...
Page 171: ... 167 ...
Page 172: ... 168 ...
Page 173: ... 169 ...