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Hot water combi boiler question
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By (user no longer on site) OP 48 weeks ago
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My combi boiler seems to be playing up
When I demand hot water I hear the boiler fire up then a short while later with the tap still running the burner stops if I leave the tap running it kicks in again then stops and so on.
I've checked water pressure its about 1 1/4 bar, no error codes.
Anything I might be able to do before I ring the boiler man ? |
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By (user no longer on site) OP 48 weeks ago
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"What temperature have you set the HW to on the boiler? If it's set too low it's probably reaching it's temperature sooner and then flaming out before it kicks in again."
I'll try and answer the other Q's on here as well.
Set the hot water at 60 ish.. never seems to get therr..
If I run the central heating that runs fine only seems to be the water |
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By (user no longer on site) OP 48 weeks ago
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"When was it last serviced?
Heat exchanger could be blocked "
Serviced about july this year, Its on a service contract so gets one every year, only thing the guy found was a leak on the expansion vessel which he reinflated |
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"What temperature have you set the HW to on the boiler? If it's set too low it's probably reaching it's temperature sooner and then flaming out before it kicks in again.
I'll try and answer the other Q's on here as well.
Set the hot water at 60 ish.. never seems to get therr..
If I run the central heating that runs fine only seems to be the water "
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It could be your flow switch. |
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ive just had a new combi fitted , gloworm , 2400 , fixed price thats because i had a regular system , ie tank in loft emersion heater etc , was only 1800 if a like for like swop.
is your thermostat working ok
could the rads need bleeding
is it possible to turn off at the mains , electric i mean , leave for 10 mins then fire it up again
is there a pump , give it a tap with a hammer
turn the temperature right down , leave for 10 mins then turn it up again..
waffle i know , ive just drank a bottle of wine lol |
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By (user no longer on site) OP 48 weeks ago
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"What temperature have you set the HW to on the boiler? If it's set too low it's probably reaching it's temperature sooner and then flaming out before it kicks in again.
I'll try and answer the other Q's on here as well.
Set the hot water at 60 ish.. never seems to get therr..
If I run the central heating that runs fine only seems to be the water
•
It could be your flow switch."
I'll ring the serv8ce co. Tomorrow, was hoping for a quick fix or my shower in the morning wi be very brisk.  |
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It could be your turbo encabulator.
I hear the old ones are made of prefabulated aluminite, surmounted by a malleable logarithmic casing in such a way that the two main spurving bearings are in a direct line with the pentametric fan. |
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As this is my industry I feel qualified to offer an opinion. It sounds like it's cycling, ie the primary heat exchanger gets to hot shuts the burner down cools and fires again - this happens if it can't get rid of it's heat quickly enough. Causes for this are either a blocked (scaled up) dhw heat exchanger or a blocked internal filter. The fact that you have your hot water set to 60'c my monies on a scaled dhw heat exchanger.
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By (user no longer on site) OP 48 weeks ago
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Cheers for the advice folks.. not something I'm gonna be sorting ... i'll ring the service company in the morning hopefully get someone out next day or two.. cold water showers has effects on guys that ain't confidence inspiring   |
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"My combi boiler seems to be playing up
When I demand hot water I hear the boiler fire up then a short while later with the tap still running the burner stops if I leave the tap running it kicks in again then stops and so on.
I've checked water pressure its about 1 1/4 bar, no error codes.
Anything I might be able to do before I ring the boiler man ?"
its diverter valve depending on your boilers make.
If faulty it tends to heat a rad closest when it fires up a quick check will point this out. |
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