Si39-303 Appendix
General Information 145
7.12.2 Example 2: Mismatch between cables connecting indoor and
outdoor units and corresponding piping. (all model)
Situation
The remote controller is not showing any malfunction and the system is operating but there is no flow of
warm air from the indoor unit (in heating mode).
Source of
Problem and
Remedial Action
The connecting cables and the corresponding piping were not correctly matched.
Recabling was carried out and the fault disappeared.
Main Points
!
Special care must be taken when the pipework and cabling are carried out by different people.
!
Run each indoor unit in turn to check that the system is correctly matched.
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