Mend > Home Heating Systems

Ravenheat 820/20 cut out?

My 820/20 runs at full pelt no matter hat the water flow. I have been told its not modulating ie not reducing gas as the water flow eases. Is this correct? The boiler heats fine but cuts out the pilot only after running a long hot bath. Why and are they related problems. The Timer no longer works and has been bypassed.

Gary Heiss
January 2005

Ravenheat Heating, Home Heating Systems Full Water Flow

I have the same problem. I've been living with it, but its getting worse - hot water is scalding hot and then the overheat shutdown operates. Did you find out if the problem was with the modulator? it seems to me that the modulator will only modulate if the DHW thermostat is operating.

Jeremy
April 2006

Automatic Answer

While you wait for answers, we may have found some information which could help you.

Click here for Full Water Flow

Mend repair fix Ravenheat home heating systems

ravenheat csi 120 no hot water?

csi 85t ravenheat no power at fan?

Faulty Worscester 35 CDi loosing pressure?

how can i ignite the pilot light on a ravenheat boiler?

pressure dropping on openning the hot water in my ravenheat csi 85 aboiler?

minimal hot water ?

Faulty Ravenheat condensing boiler?

Ravenheat CSI 85 Red Light?

What is wrong with my ravenheat white star combination boiler,?

ravenheat csi 85 b (t) hot water no central heating?

ravenheat csi 85(t) 780 series red light flashing?

Central heating but no hot water?

Mend Ravenheat Home Heating Systems

Related Categories

Mend > Home Heating Systems

Ravenheat 820/20 cut out?

Automatic Answer

Ravenheat 820/20 cut out?

I can answer this question ...

Ravenheat 820/20 cut out?

How to mend ...

Mend home heating systems ...

Worcester boiler dripping water?

Vaillant ecotec 831 plus?

Remove boiler cover?

Siemens RDJ10RF thermostat problem?

Boiler cycle?