Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove knob from CH Potentiometer on Main PCB
Measurement:
Measure across left and right terminals of DHW Burner Pressure Potentiometer.
Resistance should be approximately 4.5 kOhms.
Note: Do Not Adjust this Potentiometer.
Resistance should be approximately 4.5 kOhms.
Note: Do Not Adjust this Potentiometer.

Isolate as per TOPs P4
and refit as necessary