Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Observation:
Is the system pressure approximately 1 - 1.5bar when cold?
Allow a small amount of water into the system via the filling loop.
Does the gauge respond to the increase in pressure?
Allow a small amount of water into the system via the filling loop.
Does the gauge respond to the increase in pressure?
