It could only happen to us Boiler has shut down E110 I think

[McCabe-Thiele (Ted)]

Baxi Customer Support came this morning - replaced the sump pump - that's 3 pumps since Sept/Oct 2014. Not even 9 winters so if you subtract the house fire that's not a reliable sump pump!

[ST1100]

Baxi Customer Support came this morning - replaced the sump pump - that's 3 pumps since Sept/Oct 2014. Not even 9 winters so if you subtract the house fire that's not a reliable sump pump!

Boiler condensate is quite corrosive, seems the OEM internal pump isn't quite suited...
Maybe fitting an auxiliary tank pump (i.e. Aspen) underneath the device would provide a more reliable solution...
https://www.aspenpumps.com/en/aspen-pumps/boiler-pumps

[McCabe-Thiele (Ted)]

The boiler has failed overnight error code E110 - I'm thinking they should have replaced the level switch like last time.

[royhall]

Hi Ted. Sorry only just seen your thread. I have been a Baxi service engineer for years. That fault is almost always the condensate level switch, very rarely it's the condensate pump. You will struggle to keep a good condensate system on that boiler as they are frankly crap. That's a technical term that Baxi wont admit to. You may struggle to fit another type of pump as there is very limited space in there, the existing pump is made to fit that space. Best of luck.

PS. If they come back to change the switch get them to replace both.

[McCabe-Thiele (Ted)]

They are back tomorrow to fit the level switch, no option to fit anything else as it's a BBU 15 HE unit - so naff all space as it's a back boiler direct replacement with a dam expensive plastic chimney.
No level switch in stock they had to order one.

[Oddjob]

You'd think that if it's common for them to fail they'd have a few in stock, poor service and lack of forethought.

[K2-K6]

Frustrating for you Ted, effectively makes that switch a service part just like a filter on vehicle engines if it's life is that short.

Puzzling how something that needs inherent reliability can be so flaky, unless it generates callout income  deliberately.

I've worked with systems in industrial application, sumps, clearance stations, return loops etc etc for chemical handling, all of which ultimately needed highest level of reliability.
Often we'd use primary switching then backed by a secondary to give failsafe operation, this linked to some signalling to indicate that the primary switching needed attention. 
Completely chemical proof magnetic sensors for level switching, stainless or titanium probe in aggressive chemicals to avoid failure. Sump pumps above sump (to keep it in isolated atmosphere away from corrosive fumes) with one way valve under liquid level such that the pump head always remained without air/lock etc.
Also mag drive pumps on which the chemical pump head used the impeller supported on liquid bearing (effectively no shaft etc) and driven by remote magnetic coupling so no seals whatsoever. 
These are pretty routine devices, disappointing that domestic suppliers can make such flaky products and often at appreciable cost.

Industrial quality ranting there 

[royhall]

I find a great many Baxi parts that fail are changed in the new replacement part but carry the same part number. Strangely just like a Honda Delta part. When you ask Baxi, the parts changed but they've never had any problems with it. Make your own minds up. By the way, it's not just Baxi they all do it.

Sent from my Pixel 7 Pro using Tapatalk

[McCabe-Thiele (Ted)]

You'd think that if it's common for them to fail they'd have a few in stock, poor service and lack of forethought.

Typical of the current JIT system that so many firms follow to reduce stocking costs - I was shocked to find that when I worked at Merc Derby they carried no stock for some oil fiters & things like ABS wheel sensors.

Baxi have offered to contribute £75 against receipt for the purchase of electric heaters. That sounds generous on one level - my electricity costs for the total of 6 days without central heating is likely to be at least £110 more than usual less the gas I have not used.

Pleased I took out an Insurance Policy with Baxi themselves as the local firm who fitted my boiler were not interested telling me they now only deal with Worcester-Bosch.

[McCabe-Thiele (Ted)]

FMG our heating is back up & running - engineer turned up at 8.00 am as promised left at just gone 9.30 both sump level switches  both replaced.

Hopefully sorted for a couple more winters now on sump pump number four counting the original & the third set of level switches.

I dread to think of the learning dip that future heat pump owners will go through not to mention Electric Vehice Owners - I think anyone buying a current EV is in the same place as those Mobile Phone owners with a house brick for a phone - they thought they were so cool.

[ST1100]

FMG our heating is back up & running - engineer turned up at 8.00 am as promised left at just gone 9.30 both sump level switches both replaced.
Hopefully sorted for a couple more winters now on sump pump number four counting the original & the third set of level switches.

Good to hear, comfy house again... (unless you think about gas prices...)
Over here "on the continent" condensing boilers are generally wall mounted models; hence either natural drain, or mentioned tank pumps...
The gripe is mostly due to MFGs stop carrying spares (over new models), like control PCBs...

I dread to think of the learning dip that future heat pump owners will go through...

Dunno working on A2W heat-pumps for quite some time now, they're quite reliable, issues origin mostly on the heating hydraulic inside the house...
And retrofitting old buildings is another issue, often more efficient to have them installing new, vacuum sealed windows...

[McCabe-Thiele (Ted)]

The problem here in the UK as a fellow Austrian born in Klagenfurt is that UK homes simply do not have the insulation required.

[ST1100]

The problem here in the UK as a fellow Austrian born in Klagenfurt is that UK homes simply do not have the insulation required.

Well, the castle of my former boss (D.I.Hochegger; RIP) is heated by some I'm responsible for the layout... 
https://www.burg-rabenstein.at/burg-rabenstein/
Proves that even rock & stone walls can be heated efficiently... 

[McCabe-Thiele (Ted)]

Yes a four foot thick castle wall would do the trick - insulation wise.😁😁😁

[Bryanj]

True, keeps the heat in BUT takes 6 months to warm up in the first place!