Baxi Combi 100HE plus.
Hot tap water but no heating. Checked water pressure etc and pump appears to be running when hot tap is run.
I suspect the actuator valve is faulty it is a Honeywell VC4012 actuator.
How can I confirm this, and is it an easy DIY fix. The part is readily available on ebay.
Hot tap water but no heating. Checked water pressure etc and pump appears to be running when hot tap is run.
I suspect the actuator valve is faulty it is a Honeywell VC4012 actuator.
How can I confirm this, and is it an easy DIY fix. The part is readily available on ebay.