Problem.
No display,
Techie replaced the PCB.
No luck. Replaced the display panel. No luck. Phoned manufacturer went through diagnostics (which should probably have been done in the first place.)
After replacing the first 2 bits turned out to be a pressure sensor using the fault codes able to see once the display was functioning.
So, failed sensor PCB and display diagnosed as a voltage surge.
All replaced under warranty.
Not a car, a modern 1 year old Combi boiler..
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>> Problem.
>> No display,
>> Techie replaced the PCB.
>> No luck. Replaced the display panel. No luck. Phoned manufacturer went through diagnostics (which should
>> probably have been done in the first place.)
>> After replacing the first 2 bits turned out to be a pressure sensor using the
>> fault codes able to see once the display was functioning.
>> So, failed sensor PCB and display diagnosed as a voltage surge.
>> All replaced under warranty.
>> Not a car, a modern 1 year old Combi boiler.
Which brand of combi-boiler do your have?
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There are so few proper parts inside them these days. In my limited experience (though I've been surprised at the high proportion of devices in my < 2yo kitchen and bathroom have been "called in" in my warranty period) the PCB is usually the first thing they, or complete device replacement (even for quite expensive devices)
Having said that, I had boiler problems a few years back with a fairly modern Vaillant which appeared to be a temperature sensor problem (inflow and outflow temps too far apart) but which turned out simply to be that there was an alternative wiring option to that my plumber used which fitted my circumstance better. I had had 2 PCBs replaced before one of their engineers identified it!
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<< There are so few proper parts inside them these days. >>
A good reason to follow the attitude I take to my cars - keep the reliable old ones going as long as poss. Our Worcester combi was made in 1999. It started using water in 2015, which was found to be due to an internal leak in the heat exchanger (corrosion), and the ballast volume was swapped at the same time. Still behaving normally at 25 years old.
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But there again:
“ Modern condensing gas boilers typically operate at 90–98% efficiency (measured as AFUE or seasonal efficiency), compared to older non-condensing boilers from the late 1990s which typically ran at 55–75% efficiency.
That means a modern boiler can be roughly 25–40 percentage points more efficient, or put another way, you could see fuel savings of 30–40% on your heating bills by switching.”
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<< Modern condensing gas boilers typically operate at 90-98% efficiency ... >>
Well, yes they do (may), but only when they are working :-)
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Valiant Glowworm 30C eco combi.
But all sorted under Warranty.
No hot water/heating for 3 days as parts not in stock, so next day delivery except for the sensor which WAS in stock.
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>> Valiant Glowworm 30C eco combi.
>>
Or possibly a Vaillant even? (It doesn't sound like your boiler put up a particularly valiant effort in providing heating...)
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Parts lottery or firing the parts cannon - De Sisti
