Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect the wires from the water pressure switch
(pressure switch may be located on flow pipe as shown or
on the left hand manifold below the diverter valve)
Note: Ensure that the system is pressurised before undertaking this test
(pressure switch may be located on flow pipe as shown or
on the left hand manifold below the diverter valve)
Note: Ensure that the system is pressurised before undertaking this test
Measurement:
Measure the resistance between the exposed
terminals of the Water Pressure Switch.
terminals of the Water Pressure Switch.
Isolate as per TOPs P4
and refit as necessary