Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Remove the DHW flow switch from the return manifold
Observation:
Using a screwdriver detect the magnetic pull on the blade.
This can be felt most strongly by moving the blade across the face of the return manifold where the DHW flow switch attaches.
Turn hot water tap Off.
The flow switch magnet should move back and the magnetic pull on the screwdriver blade should cease.
This can be felt most strongly by moving the blade across the face of the return manifold where the DHW flow switch attaches.
Turn hot water tap Off.
The flow switch magnet should move back and the magnetic pull on the screwdriver blade should cease.
Isolate as per TOPs P4
and refit as necessary