Isolate Mains Power to appliance as per TOPs P4
Drain primary circuit of boiler
Remove pressure sensor from pump block
Drain primary circuit of boiler
Remove pressure sensor from pump block
Observation:
1. Inspect pressure sensor for restrictions / blockages.
2. Inspect pump block for restrictions / blockages where the pressure sensor is located.
2. Inspect pump block for restrictions / blockages where the pressure sensor is located.
