-
258
-
11
Error display :
E28
[Defective remote controller thermistor.]
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
Stays OFF
Keeps flashing
Outdoor unit
YES
NO
NO
YES
Remote controller PCB is
defect. Replace it.
Remote controller thermistor is
defect. Replace it.
Are characteristics of
remote controller therm-
istor OK?
Is the remote controller
thermistor connector co-
nnection OK?
Correct it
Temperrature( ˚C)
0
1
2
4
6
8
10
12
Resistance value (k
Ω
)
65
62
59
53
48
44
40
36
Temperrature( ˚C)
14
16
18
20
22
24
26
28
Temperrature( ˚C)
30
32
34
36
38
40
42
44
Temperrature( ˚C)
46
48
50
52
54
56
58
60
Resistance value (k
Ω
)
33
30
27
25
23
21
19
18
Resistance value (k
Ω
)
16
15
14
13
12
11
9.9
9.2
Resistance value (k
Ω
)
8.5
7.8
7.3
6.7
6.3
5.8
5.4
5.0
Resistance-temperature characteristic of remote controller thermister
