Hi! I've had a series of problems with my Ravenheat RSF 100ET combi boiler. It's about 6 yrs old and ran perfectly for 4 yrs or so. I have had to 'thump' it from time to time (at the top) to get it going, then the clock went haywire - solved by installing a new one.
Then the boiler would 'click' fire up and go out again when the hot hot tap is used - wiggling the thermister on the DHW sorts this out, but I haven't changed it yet.
Now, when I run the domestic hot water the central heating gets warm at the same time.
I installed a new diaphragm in the 3-way diverter valve, but it didn't help. The diaphragm spindle actuates the microswitches as it is supposed to do, but when the hot water tap is used the CH still gets warm.
Is there another shunt or valve inside the body of the 3-way diverter that could be stuck? I'm tempted to put in a complete new valve, but am a bit stumped by the three types that are available (types D, E and F) - all of which have the two smaller feeds (non CH) at right angles to each other, whereas mine has one at the top and one at the bottom, with the flow adjustment screw at the top (all the valves i've seen for sale seem to have the flow adjustment screw at the bottom).
I wondered if anyone has any practical experience of this and can guide me?
Thanks,
Neil.
Then the boiler would 'click' fire up and go out again when the hot hot tap is used - wiggling the thermister on the DHW sorts this out, but I haven't changed it yet.
Now, when I run the domestic hot water the central heating gets warm at the same time.
I installed a new diaphragm in the 3-way diverter valve, but it didn't help. The diaphragm spindle actuates the microswitches as it is supposed to do, but when the hot water tap is used the CH still gets warm.
Is there another shunt or valve inside the body of the 3-way diverter that could be stuck? I'm tempted to put in a complete new valve, but am a bit stumped by the three types that are available (types D, E and F) - all of which have the two smaller feeds (non CH) at right angles to each other, whereas mine has one at the top and one at the bottom, with the flow adjustment screw at the top (all the valves i've seen for sale seem to have the flow adjustment screw at the bottom).
I wondered if anyone has any practical experience of this and can guide me?
Thanks,
Neil.