Anyone help with a hot water problem?

[Nubb 10]

My hot water is consistantly over-heating. There's a thermostat on the side of the hot water tank in the bathroom which was always set to 50 degrees but the water is now getting much hotter. My dad replaced the thermostat but it hasn't cured the problem.

 

Any advice please??

 

thanks

[anniee 10]

turn the thermostat right down,i think

[Nubb 10]

Thanks - I've tried that but it doesn't seem to make any difference to the water temp.

[Wotwosit 10]

Is the thermostat on the tank controlling an immersion heater or a gas or other central heating boiler that heats the house and the hot water for the taps?

[handypandy 14]

Are the central heating radiators at their usual temperature?

[frostiekazza 10]

Get someone out to look at it ASAP .

Theres been too many horror stories reguarding faulty boiler / thermostats in the last couple of years to leave it .

Luv Karen

[Nubb 10]

The thermostat that was replaced is the one strapped to the hot water tank in the bathroom. I don't have an immersion heater. The radiators are controlled by a room thermostat and they seem to be working normally.

 

It seemed so obvious that it was the thermostat on the water tank that was faulty which is why we replaced it. Just confused why this didn't work.

[jl-heating 10]

its no good just swopping the stat , check the connections depending on the model of stat.

 

there will be either 3 or 4 wires to it .

earth,neutral and live and switched live.

 

remember you are dealing with 240 volts here: do you have live in and live out when the heating is calling for heat ?

and when you close the stat down the live out will drop its voltage.

 

to be honest it sounds to me like the zone valve is passing and heating the cylinder up.

or incorrectly wired i wont bother you with the test for this .

 

it would take someone 15 min to diagnose this with a multi tester.

 

be carefull with it.

 

also it wont be dangerous as it can only go as hot as the boiler stat 80 degrees max.

it wont boil (unless the boiler stat is goofed.) gulp !!

 

basic diagram here ..http://content.honeywell.com/uk/homes/systems.htm

 

on this one it is a 2 wire set up .switched to 1.

there is an earth but it is not shown and it runs without a neutral, so do some dont depends on manufacturer.

 

live from 6 to 1 and switching to C when called for heat.then to zone valve on the brown which then throws a live to the boiler on orange.= heating on.

 

when stat is satisfied and up to temp it closes and shuts power off to the zone valve = boiler off.

 

are you dizy yet . (i am and i understand it lol)

[Nubb 10]

Yes, very dizy! You lost me after the first line i'm afraid!

 

Sounds like i better get it looked at.

 

thanks

[jl-heating 10]

yup.

i think so.

[catzeyesF 10]

Yeh we dont get any sometimes..annoying when you got shampoo in your hair!!

[jl-heating 10]

i dont have that problem anymore i am to old for hair.