Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Drain boiler primary circuit
Unclip pump proving switch
Unclip pump proving switch
Observation:
Remove the 4 screws from the pump proving spindle housing and inspect the diaphragm, spring and spindle for signs of wear or damage.
Inspect the main inlet inside the diverter valve and the weep tube for blockages or restrictions, a small Allen key will fit into the diverter valve side of the weep tube.
Inspect the main inlet inside the diverter valve and the weep tube for blockages or restrictions, a small Allen key will fit into the diverter valve side of the weep tube.
Isolate as per TOPs P4
and refit as necessary