Gledhill Boilermate II - No Hot Water

[dac182]

Hot water lasts only 10-20 seconds before turning cold.Both PCBs appear to be working.
Thermostat switches power on though does not last very long
Could I have a faulty thermostat or could an air lock possibly be the problem.Problem only started recentl

Central Heating works fine
Boilermate II - Model FE185
Boiler model - Suprima 50

 

[croydoncorgi]

What you have is a heatstore.
Is the store actually hot?
The hot water is heated (I think!) in a heat exchanger fitted on the right side of the main tank. If the water gets hot momentarily the most likely expalnation is that the pump / valve(s) that control the flow of water from the tank through the HX are not working right.

Is the pump actually running? Poke a long screwdriver onto the pump casing and listen to the handle. If you can hear a whirring noise - it is. Otherwise not.

 

[oilman]

This is equipment specific. You could try searching the forum for Boilermate, or ring the technical dept of Gledhill. They can tell you the answer very quickly.

 

[Slugbabydotcom]

Has the Feed and expansion tank got any water in it
Check this link http://www.gledhill.net/water-storage/downloads/technical-manuals/boilermatemain.pdf for manual. Dont know if its exact model but should give you a clue...>> Check the GC numbers at the start.
The number is in there for tech advice

Just had a look through the bumff

I would be checking the pump on the plate heat exchanger circuit as already suggested and the plate heat exchanger itself if the onset of this problem was gradual and especially if you live in a hard water area.

 

[dac182]

Not sure if pump is actually running although it is being supplied with juice
Heatstore does not feel as warm as I would expect it to be.
A few days before the problem started our water supply was off and we had dirty water also
F&E tank was empty - though have manually filled this as I appear to have a blocked ball valve
If the boilermate tank is not full would this give me Cental heating but no hot water
There appears to be bleed valve above the boiler return pump, I have tried opening this to bleed system but no water comes out hence my thinking that an air lock could be the problem.
Is there a way of being completely sure that the pump is operating

Thanks for your assistance so far

 

[kevplumb]

 

[Slugbabydotcom]

F&E tank was empty - though have manually filled this as I appear to have a blocked ball valve
If the boilermate tank is not full would this give me Cental heating but no hot water

Good chance that was the problem thats why I asked the question

 

[kevplumb]

 

[oilman]

I see Kev gets his large numbers of posts by posting single or multiple smilies only. We ought to have a useful contents gauge as well.

 

[Pugwash]

The part needed is a Gledhill GT153 hot water sensor, costs about £20.

 

[Softus]

_______________________
moderator

please note 17