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Andrew Smith
Andrew Smith, Engineer
Category: UK Plumbing
Satisfied Customers: 3591
Experience:  Domestic Gas, Commercial Gas, LPG, Unvented Hot Water, Part P Electrical, Commercial Catering
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I have a Ravenheat CSI Primary. The fan & pump run

Customer Question

I have a Ravenheat CSI Primary. The fan & pump run continuosly with no demand. I think the sensor is at fault. I have checked with a meter and the top sensor (clipped in place) seems to be resistive, value 11k reducing if I warm it. The lower screwed in sensor is closed.
Submitted: 1 year ago.
Category: UK Plumbing
Expert:  Andrew Smith replied 1 year ago.

Can you check if the air pressure switch has 3 wires on your model, also you need to check the hot water flow switch.

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