Ac Zero Cross Signal Error - Samsung AC026MNJDKH/EU Service Manual

4-4-17 AC zero cross signal error

1.Checklist :
1) Check the power condition at customer's house (Is there any power noise?)
2) Have been there power failure?
2. Troubleshooting procedure
Restart after power off
Is the AC line zero cross signal error appeared
again?
Exchange the Outdoor PBA
4-42
Yes
No
Terminate the service
Samsung Electronics