IVT 09LR-N Service Manual page 43

Malfunction indications due to erroneous wiring during air conditioner installation
Inter-unit wiring error mode
1
1 1
Indoor Outdoor
N N
unit
2 2
2
1 1
Indoor Outdoor
N N
unit
2 2
3
1 1
Indoor Outdoor
N N
unit
2 2
4
1 1
Indoor Outdoor
N N
unit
2 2
5
1 1
Indoor Outdoor
N N
unit
2 2
Malfunction diagnosis display
unit
Malfunction diagnosis display
unit
Malfunction diagnosis display
unit
Malfunction diagnosis display
unit
Malfunction diagnosis display
unit
Symptom
"18-1"
None
(Displays "18-0" when malfunction code is called out.)
None
(Displays "18-0" when malfunction code is called out.)
"18-1"
"18-1"
3 – 21
12LRN