After experiencing issues with luke warm hot water and reading about the relative simplicity of refurbishing the diverter valve in the Baxi he I went ahead and did the job with some trepidation To my relief the boiler is now working much better, however it is also leaking a fair bit. The refurb kit came with a small pouch of grease and I applied this as well as I could where it seemed sensible to do so. Mainly on the actuator pins that contact the microswitches. Clearly it was insufficient though as the leak is not one that can be ignored.
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Baxi e Instant repair — hot water problems Posted on 22 Aug This time we are looking at Baxi e Instant combination boiler repair. This particular boiler has a preheat function which stores preheated hot water in a store build into expansion vessel. This boiler has a DHW pressure differential valve and 3 way diverter operated by electric actuator. This pointed to stuck 3 way diverter valve or faulty actuator — boiler does not fire up on hot water, although it provides some hot water when set to preheat function.
This pointed to stuck DHW differential valve or perished membrane. After removing the cover and micro switch from DHW differential valve I noticed that spindle on the valve does not move out.
I also noticed leaks from sensing tubes to DHW differential valve and scaled up automatic air vent pictures below Repair consisted of: — replacement of DHW pressure differential valve — replacement of 3 way valve actuator — replacement of auto air vent Boiler being drained down, side and front panel removed for parts replacement. New pressure differential and new washers on sensing tubes. New auto air vent below. Hot water performance has been restored and flow switch operates now on hot water demand.
During the repair I also noticed damaged combustion chamber insulating pads and order new ones for replacement.
Baxi Combi 80E, 105E Diverter Valve 248061
Baxi 7224344 Diverter Valve Repair Kit
Baxi combi instant 105e boiler. Water pressure/hot water issues....need advice.