INSTALLER
TROUBLESHOOTING
22
Code
Description
Error Type
11
Unit A comunication error
12
Unit A indoor pipe midway temperature sensor error (Indoor RT2 or RT4)
13
Unit A indoor unit pipe outlet temperature sensor error (RT7)
14
Unit A indoor pipe inlet temperatue sensor error (RT6)
15
Unit A indoor ambient temperature sensor error (Indoor RT1)
16
Unit A mode conflict
17
Unit A anti-freezing protection
21
Unit B comunication error
22
Unit B indoor pipe midway temperature sensor error (Indoor RT2 or RT4)
23
Unit B indoor unit pipe outlet temperature sensor error (RT9)
24
Unit B indoor pipe inlet temperatue sensor error (RT8)
25
Unit B indoor ambient temperature sensor error (Indoor RT1)
26
Unit B mode conflict
27
Unit B anti-freezing protection
31
Unit C comunication error
32
Unit C indoor pipe midway temperature sensor error (Indoor RT2 or RT4)
33
Unit C indoor unit pipe outlet temperature sensor error (RT11)
34
Unit C indoor pipe inlet temperatue sensor error (RT10)
35
Unit C indoor ambient temperature sensor error (Indoor RT1)
36
Unit C mode conflict
37
Unit C anti-freezing protection
41
Unit D comunication error
42
Unit D indoor pipe midway temperature sensor error (Indoor RT2 or RT4)
43
Unit D indoor unit pipe outlet temperature sensor error (RT13)
44
Unit D indoor pipe inlet temperatue sensor error (RT12)
45
Unit D indoor ambient temperature sensor error (Indoor RT1)
46
Unit D mode conflict
47
Unit D anti-freezing protection
51
Unit E comunication error
Indoor A
Indoor B
Indoor C
Indoor D
51
Unit E comunication error
52
Unit E indoor pipe midway temperature sensor error (Indoor RT2 or RT4)
53
Unit E indoor unit pipe outlet temperature sensor error (RT15)
54
Unit E indoor pipe inlet temperatue sensor error (RT14)
55
Unit E indoor ambient temperature sensor error (Indoor RT1)
56
Unit E mode conflict
57
Unit E anti-freezing protection
C5
Jumper terminal error
-
Indoor E
L
M1
C1
QF
XT1
C2
AP1
LED88
AP1
M2
Fig. Outdoor Unit: MUEX-42-H3.5
(Note: Refer to the real products for the exact position of each component.)
Once errors are displayed on the controller, please shut off the air conditioning unit and contact
the professionally skilled personnel for troubleshooting.
