Samsung AQ18VBA, Service Manual

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Samsung Electronics
12-2-5 Total current Trip error
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) Dose the outdoor fan operate normally? (Fan propeller loss, Motor error etc.)
5) Is the installation condition of outdoor unit good? (Piping, Space etc.)
6) Is there no ventilation obstruction at the surrounding of outdoor? (Outdoor unit cover, Fan front obstruction etc.)
2. Troubleshooting procedure
No
Exchange the PCB.
No
Exchange the PCB.
No
Exchange the compressor.
No
Reinstall and remove the obstruction.
Yes
Yes
Yes
Yes
Is the installation of outdoor unit good?
Dose the compressor rotate normally?
Is the assembly of R418, R413, IC41, C437
and the peripheral part good?
Pull out the power cord and exchange
the PCB from the case after 30 seconds.
Is the assembly of Micom and
peripheral circuit part good?
Check again after assembly of PCB.
Troubleshooting
12-6