Ravenheat CSI 120 fault 28

[elbistan]

Hello everyone,
Just been called to this boiler with no heating or hot water. My first Ravenheat boiler. When there is demand for DHW boiler sees the demand the pump runs for several second and then the fault code 28 is displayed.
Looking at manual it states: Failed Flow Water Pressure Switch, or Pump.
I have removed the pressure switch and checked with a screw. There is continuity when slightly pressed with a screw. System pressure is 1.2 bars. Pump runs.
Will call customer service in the morning. Just wondered if anyone came accross this fault.
Merry Christmas and happy new year to everyone.

 

[Scott_D]

Never seen a ravenheat in the flesh
Jhon Wilson from the tech lines is a bit of a Facebook hero though

 

[Deleted member 32524]

28 low water pressure switch. Try bridging out the low water pressure switch. Get a screwdriver or a bit of wire or take em off and hold them with long nose pliers or the like (the wires i mean) If it fires then it's a faulty switch. If not look at the pump. Is it easy to stop with a flat driver or does it kick out strongly?

 

[elbistan]

Thankyou DuncanM will do that.