Combination Boilers
Discussion
Can anybody help with a problem we're having with ours at the moment?
Basically, it's not heating!
When you turn on the water the pump kicks in, but the burner doesn't light. It was fine until yesterday. THen last night it was okay again, but now it's stopped working again.
The pressure guage shows a tad under 0.5 bar which according to the manual is a tad under, but it's not clear what I should do to remedy this.
Could it be the mains water pressure is down which has affected it?
Any suggestions?
Basically, it's not heating!
When you turn on the water the pump kicks in, but the burner doesn't light. It was fine until yesterday. THen last night it was okay again, but now it's stopped working again.
The pressure guage shows a tad under 0.5 bar which according to the manual is a tad under, but it's not clear what I should do to remedy this.
Could it be the mains water pressure is down which has affected it?
Any suggestions?
NiceCupOfTea said:
Can anybody help with a problem we're having with ours at the moment?
Basically, it's not heating!
When you turn on the water the pump kicks in, but the burner doesn't light. It was fine until yesterday. THen last night it was okay again, but now it's stopped working again.
The pressure guage shows a tad under 0.5 bar which according to the manual is a tad under, but it's not clear what I should do to remedy this.
Could it be the mains water pressure is down which has affected it?
Any suggestions?
If the pressure is to low you might need to increase the pressure, there shoud be a way of doing this via a knob or screw (oow er misses), try phoning the maker and asking them
Yes, that's what I wanted to do, sadly there is a noddy "how to use the timer" manual and a haynes 5-spanner style installation manual, and it refers to all sorts of things I don't know anything about.
it has the usual bit of braided pipe with 2 valves at the end, not sure if I need to adjust one of those to build up pressure - thoughts?
it has the usual bit of braided pipe with 2 valves at the end, not sure if I need to adjust one of those to build up pressure - thoughts?
NiceCupOfTea said:
Can anybody help with a problem we're having with ours at the moment?
The pressure guage shows a tad under 0.5 bar which according to the manual is a tad under, but it's not clear what I should do to remedy this.
Any suggestions?
The pressure is normally around 1.5 bar on most combies. There should be a flexible pipe connecting the incoming mains near the boiler to one of the heating pipes with a small stopcock to fill up the heating.
anonymous said:
[redacted]
FAME!!Hmmm... thermocouple only keeps the pilot alight, so if it HAS a pilot and it's alight that rules that out. Low pressure is a possibility, most would survive on 0.5 Bar, but it is best to keep it around 1 Bar COLD. Re fill it using the filling loop which MAY be internal. Effectively it joins mains cold to the heating circuit via a removeable hose. If low pressure is causing it it means you have lost water (or possibly air) from the system. Any visible leaks? Vented any rads lately??
The other possibility (and to be honest there are more than a few...) is the diaphragm/microswitch. That's in and on a brass mushroom shaped thing inside and is designed to operate when the tap is turned on...check it moves. Does it work on heating or hot-water or neither?
)
Surely you don't literally adjust these valves, they're supposed to be closed at all [normal] times. What you do, or what I do on my son's combi, is make sure they're closed,open one fully, then just crack the other to leak mains pressure water in until the pressure gauge reads 1 bar then quickly close them both.
In my opinion, for what it's worth, is that combis are unnecessarily complex and potentially troublesome. The alleged benefits they offer are illusory because they waste huge amounts of water when you're trying to get water at the desired temperature out of them. They produce "virtual" hot water which, like that other rather elusive kind of wetness, disappears instantly if you say the wrong thing.
They're a pain in the ar*e.
In my opinion, for what it's worth, is that combis are unnecessarily complex and potentially troublesome. The alleged benefits they offer are illusory because they waste huge amounts of water when you're trying to get water at the desired temperature out of them. They produce "virtual" hot water which, like that other rather elusive kind of wetness, disappears instantly if you say the wrong thing.
They're a pain in the ar*e.MOTCO said:
Surely you don't literally adjust these valves, they're supposed to be closed at all [normal] times. What you do, or what I do on my son's combi, is make sure they're closed,open one fully, then just crack the other to leak mains pressure water in until the pressure gauge reads 1 bar then quickly close them both.
Can anybody else corroborate this? (no offence, just want to get a couple of people agreeing before I risk flooding the place!
)We've had a combi since last October, very pleased with it. Havent particularly noticed any problems when someone turns a tap on elsewhere, nothing that a very loud scream of "Turn that bloody tap off!" cant solve 
Also the ex-airing/tank cupboard is now yet another wardrobe for Mrs BG.
Also the ex-airing/tank cupboard is now yet another wardrobe for Mrs BG.
NiceCupOfTea said:
Surely you don't literally adjust these valves, they're supposed to be closed at all [normal] times. What you do, or what I do on my son's combi, is make sure they're closed,open one fully, then just crack the other to leak mains pressure water in until the pressure gauge reads 1 bar then quickly close them both.
Can anybody else corroborate this? (no offence, just want to get a couple of people agreeing before I risk flooding the place!
Yes, that sounds right.
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