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Split system single phase type
Clear 36: No voltage on outdoor unit
Probable causes:
•
Power supply fault.
•
External cause.
•
Faulty electrical components.
Check:
2. Check for external causes on the Hydraulic Unit and outdoor unit (noise or voltage drop) :
-
Check for any other electrical device on the same electric circuit which might cause a drop in
voltage.
-
Check for any current leaks.
Check for any equipment generating electromagnetic waves which interfere with the
-
communication between the Hydraulic Unit and the outdoor unit.
3. Check the electrical components:
-
Check that a voltage between AC 198 and AC 264 V exists at outdoor terminal L N.
Check Fuse in Main PCB
-
-
If fuse is open, check if the wiring between Terminal and Main PCB il loose, and replace
Fuse.
-
Check Active Filter Module and IPM (PARTS INFORMATION 6 and 7)
If Active Filter Module or IPM is abnormal, replace it.
-
If all of these checks are unsuccessful, replace Main PCB.
28
1. Check the installation
- Is the circuit breaker cut off?
- Check the wiring.
YES
YES
OK
OK
OK
NO
Maintenance Document 1589-3
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