66
Installation and Maintenance
Service Manual
Temp Drift Protection
PE
/
/
/
PE
PE
Drive Error
Drive Board Ambient
Temp Sensor Error
PF
/
/
/
PF
PF
Drive Error
Charging Circuit Error
PU
/
/
Flash 17
times
PU
PU
Drive Error
Unit n communication
error
See
Table 16 Flash 6 times
/
/
E6
E6
Indoor
Unit n indoor pipe
midway temperature
sensor error
See
Table 16
/
Flash twice
/
E2
E2
Indoor
Indoor Evaporator
Temp Sensor Short/
Open-Circuit
See
Table 16
/
Flash twice
/
F2
F2
Indoor
(Air Valve) Unit n
indoor unit pipe outlet
temperature sensor
error
See
Table 16
/
Flash 22 times
/
b7
b7
Indoor
(Liquid Valve) Unit
n indoor pipe inlet
temperature sensor
error
See
Table 16
/
Flash 19 times
/
b5
b5
Indoor
See
Table 16
/
Flash once
/
F1
F1
Indoor
See
Table 16 Flash 7 times
/
/
E7
E7
Indoor
Error
Code
Error Description
Error
Code
Error Description
Error
Code
Error Description
13
11
12
Unit A indoor unit pipe
Unit A communication
error
Unit A indoor pipe midway
temperature sensor error
outlet temperature sensor
error
23
22
21
Unit B communication
error
Unit B indoor pipe midway
temperature sensor error
Unit B indoor unit pipe
outlet temperature sensor
error
33
32
31
Unit C communication
error
Unit C indoor pipe midway
temperature sensor error
Unit C indoor unit pipe
outlet temperature sensor
error
14
Unit A indoor pipe inlet
temperature sensor error
24
Unit B indoor pipe inlet
temperature sensor error
34
Unit C indoor pipe inlet
temperature sensor error
15
Unit A indoor ambient
temperature sensor error
25
Unit B indoor ambient
temperature sensor error
35
Unit C indoor ambient
temperature sensor error
16
26
36
17
Unit A anti-freezing
protection
27
Unit B anti-freezing
protection
37
Unit C anti-freezing
protection
41
Unit D communication
error
46
54
Unit E indoor pipe inlet
temperature sensor error
42
Unit D indoor pipe midway
temperature sensor error
47
Unit D anti-freezing
protection
55
Unit E indoor ambient
temperature sensor error
43
Unit D indoor unit pipe
outlet temperature sensor
error
51
Unit E communication
error
56