Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Observation:
Inspect the flow and return isolation valves to ensure they are fully open.
INSPECTION FLOW AND RETURN ISOLATION VALVES
Note:
The flow and return isolation valves are fully open when the screwdriver slot is in line with the pipe.
The flow and return isolation valves are fully open when the screwdriver slot is in line with the pipe.