Samsung AQ09VFUAGM/CV, Service Manual

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Samsung Electronics 12-36
12-2-4 T ot al c urr e n t t r i p e rr o r
1. Checklist :
1) Is the input power voltage proper?
2) Is the refrigerant charged properly?
3) Does the compressor rotate normally?(Reverse rotation, Locking etc.)
4) Does the outdoor fan operate normally?(Fan propeller loss, Motor error ect.)
5) Is the installation condition of outdoor unit good?(Piping, Space etc.)
6) Is there no ventilation obstruction at the surrounding of outdoor unit?(Outdoor unit cover, Fan front obstruction etc.)
7) Is there no ventilation obstruction at the surrounding of indoor unit?(Overload condition in heating mode)
2. Troubleshooting procedure
No
Yes
Yes
Are the service valves full opened?
Yes
Yes
Check AC power source
No
No
Reinstall and remove the obstruction Is the installation of outdoor unit good?
Reinstall and remove the obstruction
No
Is the installation of indoor unit good?
Exchange the compressor
No
Does the compressor rotate normally?
Open valve screw to the end.
Is AC power voltage normal during the
compressor in operation?
Exchange INVERTER PCB
Yes