From an earlier question from Ziggy_uk, hellequin gave the following answer.
"It is most likely to be the diaphragm in the diverter valve, they become slack after a period of time. When you turn on a hot tap the differential pressure on the diaphragm pushes a pin which in turn switches a microswitch, the microswitch "tells" the boiler to fire up and heat the water, if the diaphragm is slack the pin won't make constant contact with the microswitch."
Ziggy did you get it repaired and if so how much did it cost.
Hellequin, what do you think it would cost for this sort of repair.
I have the same problem, not sure how old my boiler is as I have only been in the flat since last August.
2007-01-31 12:50:44 · 11 answers · asked by Debs 1 in Home & Garden ➔ Maintenance & Repairs
Take it to be a combi that you have. Most likely a temperature sensor on the domestic hot water side. Normally the sensor modulates the gas flame as the water heats up. Quite often when the sensor fails it goes to the off position as it warms up, hence the cold water and then to full on when it detects the cold water and supplies hot water.
The problem is that apart from the sensor failing it could be the PCB or the modulating gas valve. Could be the cheapest option to get a good CORGI reg (req. by law) service engineer to do the tests and repair.
2007-02-02 20:02:04 · answer #1 · answered by Anonymous · 0⤊ 0⤋
If it's a gas boiler, contact your local CORGI registered engineer to have a look at it. (COuncil for Registered Gas Installers_
If it's an electric boiler, contact your local registered electrician. The National Independent Council for Electrical Installation Contractors.
If it's oil, contact your oil company and ask for the number of a recommended engineer.
Ask them for a quote for time and parts cost before committing yourself.
A genuine contractor will always give you a ballpark figure, not including any 'unknowns' but they should keep you informed as they work.
2007-01-31 21:03:01 · answer #2 · answered by Rob K 6 · 0⤊ 0⤋
could be water heater values and what controls the temp of water and also could be time of day when alot of people using water pipes could be getting frozen and or too warm or both pipes could be rusted old cracked and anything else could be washers need and might need to be replaced.
2007-01-31 21:25:38 · answer #3 · answered by ? 3 · 0⤊ 0⤋
I agree, it is most probably a worn diaphram. This lets gas through to the main burner when it is activated.
2007-02-01 11:39:40 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Boiler? you must be foreign. try getting new hot water heater.
2007-01-31 21:21:43 · answer #5 · answered by abbyrose 3 · 0⤊ 0⤋
Plumber.
2007-01-31 21:27:24 · answer #6 · answered by robert m 7 · 0⤊ 0⤋
im no sure but im a bit worried about my my cold water running hot
2007-01-31 21:58:14 · answer #7 · answered by Vinny 3 · 0⤊ 0⤋
Oh god, you've got the female boiler
2007-01-31 20:56:51 · answer #8 · answered by Michael F 5 · 1⤊ 0⤋
how can hot water run cold? makes no sense. cold water runs cold, hot water runs hot.
2007-01-31 20:55:12 · answer #9 · answered by Dustin 1 · 0⤊ 1⤋
Make up with your significant other so that he stops flushing the toilet while you are in the shower :-)))))))
2007-01-31 21:45:08 · answer #10 · answered by Ritata 3 · 0⤊ 0⤋