Baxi 105 HE Issue

[DIY_Guy]

Currently have a 10 year old Baxi 105HE which seems to have developed a fault

When HW is requested the CH radiators also seem to get warm too

HW stays hot for about 5 minutes and then goes cold and then warm again (intermittent)

I've also noticed one of the red temperature lights flashing when the HW is requested

I replaced the diaphragm but think it could be the whole diverter valve that needs replacing?

Any help appreciated

 

[picasso]

Replace the diverter valve and clean or replace the plate heat exchanger.

 

[durhamplumber]

Waste of time trying to clean the hw exchanger

 

[dilalio]

Not economically viable, I agree.

 

[picasso]

Cleaned loads and only had a couple that gave problems.

 

[durhamplumber]

Cleaned loads and only had a couple that gave problems.

How long does it take?how long does it last?..still need to change seals.must take at least 1 hour to do half sensibly then you just guessing. Then you offer a warranty ..then you called back? To save a few quid...Bizarre way to do business

 

[gas112]

takes 20 mins to clean a baxi plate heat exchanger and as for seals only ever had to change one despite cleaning over 100. leave it soaking whilst stripping and cleaning divertor , it comes up like brand new and gives you one call fix and saves customer cost of a new plate ..no brainer

 

[DIY_Guy]

Currently have a 10 year old Baxi 105HE which seems to have developed a fault

When HW is requested the CH radiators also seem to get warm too

HW stays hot for about 5 minutes and then goes cold and then warm again (intermittent)

I've also noticed one of the red temperature lights flashing when the HW is requested

I replaced the diaphragm but think it could be the whole diverter valve that needs replacing?

Any help appreciated

Thanks - diverter valve ordered and will be replaced

 

[Deleted member 221031]

How long does it take?how long does it last?..still need to change seals.must take at least 1 hour to do half sensibly then you just guessing. Then you offer a warranty ..then you called back? To save a few quid...Bizarre way to do business

I’ve cleaned loads too. Takes no time, never had an issues. Always sorts the problem.

 

[ReganAndCarter]

How long does it take?how long does it last?..still need to change seals.must take at least 1 hour to do half sensibly then you just guessing. Then you offer a warranty ..then you called back? To save a few quid...Bizarre way to do business

Yes, but the OP's name is DIY_guy - so if he's handy, he can clean it in less time than it takes to get to the merchant's and back. Once the plate's out (a job that has to be done whether you're cleaning or replacing hex) it can be done in max 20 mins. The hexs work good as new after a dose of acid.

Also, the Spirits of Salts is a fiver versus £80+ for new hex. On an old boiler, makes much more sense. Maybe it makes some sense to replace for customers, but in this case it's a DIYer doing it for himself.

 

[durhamplumber]

takes 20 mins to clean a baxi plate heat exchanger and as for seals only ever had to change one despite cleaning over 100. leave it soaking whilst stripping and cleaning divertor , it comes up like brand new and gives you one call fix and saves customer cost of a new plate ..no brainer

In your dreams.changed 1 seal on hundreds of plate heat exchangers..you having a larf

 

[gas112]

Nope , but then again no point explaining to you as you think cleaning a plate wont last as long as fitting a new one