Gas Safe Central Heating Engineer

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Where is the cylinder thermostat located? Also as an FYI - boiler manufacturer will not sort this issue out for you.
 
Very odd. If the valve levers all floppy then it means its energised and powered its self over.
Also, the valve motor was replaced by the plumber a while back as he thought that was the problem. It could be 2 dud valves of course....

Alright maybe not the valve motor lol. although there appears to be an abundance of "iffy" zone valves in circulation these days so never say never.

When the lever goes floppy that just means that the valve is powering its self open, which means its working at that point.
 
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Where is the cylinder thermostat located? Also as an FYI - boiler manufacturer will not sort this issue out for you.
Cylinder thermostat is on side of cylinder. The cylinder has a lengthy warranty which I guess can be used if the thermo is at fault.

Very odd. If the valve levers all floppy then it means its energised and powered its self over.

It does seem that when the water is warm/hot in the tank then the HW valve works. In the morning for example, the water is hot after being heated in the evening and the valve always comes on.
 
Cylinder thermostat is on side of cylinder. The cylinder has a lengthy warranty which I guess can be used if the thermo is at fault.
Cylinder warranty wouldn’t cover the thermostat unless they supplied it.
 
Post a photo of cylinder thermostat and zone valves. Also what temperature is the thermostat set to?
 
Post a photo of cylinder thermostat and zone valves. Also what temperature is the thermostat set to?

Temperature is set to 60C. Just noticed valve has now powered off, lever no longer floppy.
IMG_0713.jpg
 
Valve will close automatically once cylinder has reached temperature so will close off again on its own after its warm. With unvented cylinders having high levels of insulation its not uncommon for folk to just run them on constant and that way the boiler will top up the heat in it as required but doesnt address the fault if yours is cold when it should be heating. could be simply a loose wire somewhere
 
usually the gas safe guy would be competent enough to do the electrics
That is not always the case as there are now restrictions on what GSR can do electrically,hence problems arise.As always now "" competent" in ability is entirely different to "" competent"" in law.
 

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