Set Appliance State:

Mains Power Off
Ensure NO demands are present
Ensure appliance is cool
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Press the reset button once then release.
Does the appliance reset ?
Note:
If after appliance reset the error code changes from the original to a different error code, then CLICK HERE