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But how does it know?
Posted: Sat Feb 11, 2012 3:19 pm
by tony.mon
Bloody central heating combi boiler wouldn't start this morning.
Coldest night of the year, maximum butt factor, but how did it know when to fail and cause the biggest problem?
Anyway, got onto t'internet, found a schematic, stripped controller board and replaced three capacitors; had to go to two different Maplins (one twice, 'cause they gave me the wrong bloody one)
.
Back to working now, though.
Saved meself a huge callout and bill for new parts, anyway, so all good in the end.
Re: But how does it know?
Posted: Sat Feb 11, 2012 3:25 pm
by agentpineapple
another string to your bow there buddy, i think i have your emergency call out number.....
Re: But how does it know?
Posted: Sat Feb 11, 2012 3:29 pm
by AMCQ46
You sure it wasn't the condenser overflow freezing? That is the cause of 99% of boiler problems in winter now they all have these double condensing systems to be more efficient.
It is only a 1" pipe, and they made some dumb rules that it can't go into your sink waste, it has to go directly outside, but as it is a very slow drip, it will freeze very easily and when the system detects it is blocked it won't light up!
Our holiday house in Scotland has a new boiler, and it was freezing up every day last winter....had to get out with hair dryer and thaw it. But our main house has a 30 yr old boiler and it never misses a beat!
That's progress for you!
Re: But how does it know?
Posted: Sat Feb 11, 2012 4:00 pm
by Fireman on a Storm
AMCQ46 wrote:You sure it wasn't the condenser overflow freezing? That is the cause of 99% of boiler problems in winter now they all have these double condensing systems to be more efficient.
It is only a 1" pipe, and they made some dumb rules that it can't go into your sink waste, it has to go directly outside, but as it is a very slow drip, it will freeze very easily and when the system detects it is blocked it won't light up!
Our holiday house in Scotland has a new boiler, and it was freezing up every day last winter....had to get out with hair dryer and thaw it. But our main house has a 30 yr old boiler and it never misses a beat!
That's progress for you!
The condense pipe is a standard 22m. A fix that we are doing and doing as standard on new instalations is to step up the condense pipe run to 32mm shortly after it comes out of the boiler. Bigger pipe = to big to freeze!
As for the dumb rules, you can put the condence into a waist water pipe run but you can't connect it into a rain water run. The condence water can bugger up the inviroment if it enters rivers or the water table from rain water drains