-
472
-
E28
Remote control
temperature thermistor anomaly
–
–
Keeps flashing
Stays OFF
1. Applicable model
5. Troubleshooting
All models
Diagnosis
Countermeasure
NO
YES
NO
YES
Is the remote
control temperature thermistor
connected properly?
Are the
characteristics of
remote control temperature
thermistor OK?
Is the thermistor wire
OK?
Resistance-temperature characteristics of remote control temperature thermistor (ThC)
0
1
2
4
6
8
10
12
Temperature (°C)
65
62
59
53
48
44
40
36
14
16
18
20
22
24
26
28
33
30
27
25
23
21
19
18
30
32
34
36
38
40
42
44
16
15
14
13
12
11
9.9
9.2
46
48
50
52
54
56
58
60
8.5
7.8
7.3
6.7
6.3
5.8
5.4
5.0
Resistance value (k
Ω
)
Temperature (°C) Resistance value (k
Ω
)
Correct.
Defective remote control
temperature thermistor
➞
Replace.
Defective remote control
PCB
➞
Replace.
(Defective remote control
temperature thermistor
input circuit)
2. Error detection method
Detection of anomalously low
temperature (resistance) of
remote control 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 error
occurs again within 60 minutes
after the initial detection.
4. Presumable cause
• Faulty connection of remote
control temperature thermistor
• Defective remote control
temperature thermistor
• Defective remote control PCB
Note:
After 10 seconds has passed since remote control thermistor was switched from valid to invalid, E28 will not be displayed even if the thermistor
harness is disconnected. At same time the thermistor, which is effective, is switched from remote control thermistor to indoor return air
temperature thermistor. Even though the remote control thermistor is set to be Effective, the return air temperature displayed on remote control for
checking still shows the value detected by indoor return air temperature thermistor, not by remote control temperature thermistor.
NO
YES
NO
YES
Is the remote
control temperature thermistor
connected properly?
Are the
characteristics of
remote control temperature
thermistor OK?
Is the thermistor wire
OK?
Resistance-temperature characteristics of remote control temperature thermistor (ThC)
0
1
2
4
6
8
10
12
Temperature (°C)
65
62
59
53
48
44
40
36
14
16
18
20
22
24
26
28
33
30
27
25
23
21
19
18
30
32
34
36
38
40
42
44
16
15
14
13
12
11
9.9
9.2
46
48
50
52
54
56
58
60
8.5
7.8
7.3
6.7
6.3
5.8
5.4
5.0
Resistance value (k
Ω
)
Temperature (°C) Resistance value (k
Ω
)
Error code
Remote control:
Indoor
display
RUN light TIMER light
Green LED Red LED
Outdoor
control PCB
Content
-
472
-
'13 • PAC-T-197
Summary of Contents for V Multi 100VNX
Page 98: ... 97 13 PAC T 197 Models FDT100VF1 125VF 140VF H H H H H C B A F G D G PJF000Z285 A ...
Page 101: ... 100 13 PAC T 197 Models FDEN60VF 71VF1 C2 C1 A B A B D C1 C2 C1 C2 E G F C PFA003Z817 ...
Page 116: ... 115 13 PAC T 197 b Wireless remote control RCN E1R 60 17 150 Unit mm ...
Page 291: ... 290 13 PAC T 197 261 12 PAC T 173 ー K ...
Page 590: ... 589 13 PAC T 197 3 8 SUPER LINK E BOARD SC ADNA E F ...
Page 591: ... 590 13 PAC T 197 ...
