I replaced the expansion vessel today in my Baxi 105HE Combi Instant boiler. All went fairly smoothly but I did have to disconnect it from the wall in order to access the expansion chamber.
Having got it all back together again and refitted back on to its frame and all the gas and wet...
I can supply a brand new kit for £40.25 plus postage or you can pick it up if you are anywhere close to the central belt in Scotland.
The kit includes D Valve Head with seal, D Valve base with seal and retainer, pre assembled top valve with spring and seal, lower valve with seal and mid spring...
Nath
In case I misunderstood your question - The vertical push rod in the diverter valve does seem to rise when DHW is demanded but there is little resistance in it when pushed. I was going to attempt to pull this rod up but cannot really get a good grip on it whilst it is in situ. I did get...
Hi Nath
With the Diverter Valve Operating Head spring clip removed, the head only seems to rise when CH is demanded. It does not rise when DHW is demanded, although the tap icon lights and the boiler fires. The Plate Heat Exchanger does not get hot at all. I've found that if I run the hot...
Thanks maxil
I've taken the microswitch off and the push rod has a good resistance when pushed in and pops out immediately when released which makes me think the diaphragm is OK. Not a hard job to take it off and have a look though. I've tried testing everything I can and all seems to work as...
I'd be very grateful for some advice.
I have a Baxi Combi Instant 105 HE and today it gave up supplying domestic hot water. The CH circuit is pumping away fine. When I turn the DHW taps on, it just flows cold. The boiler recognises the demand and the tap icon lights and the boiler fires but...
I got mine from ebay. It was for a 105HE Instant Combi.
You might want to follow up on the repair suggestions. I couldn't dismantle mine and lost the will to try particularly had when I had removed it. It must be possible to get into the valve body.
Good luck
Steven
Useful to know but all a bit too late for me. I sourced the complete valve for £35 so I am quite happy. The water I drained off was very grotty indeed, supporting gordongas's theory on cause. I flushed the full system opening each rad in turn for 4 minutes and have put in some cleaner to run...
Hi tj123
The leak got steadily worse and I replaced the Diverter Valve body. Not too bad a job but I had to go out and get fibre washers that did not come with the valve. The operating head valve rod gland was definitely at fault and seems unrepairable even with the old diverter valve...
Hi Folks
I'm new to this forum but hoping you can help me.
My Baxi Combi Instant 105 HE boiler is leaking central heating water from under the Operating Head of the Diverter Valve assembly. I've removed the Operating Head and it was full of central heating water! The leak stops with the...