No hot water

[xantia]

Central heating works but no hot water, the honeywell 2 port valve doesnt open when water is called for, even if i manually open the valve the water doesnt heat up, how can i check if the valve if goosed, also there is a gate valve fitted between the 2 port valves which has started to leak water and when turned doesnt appear to be doing anything.
thanks

 

[seco services]

check their is 230v from the stat to the brown on the valve.

 

[Agile]

The valve is probably a bypass and should be opened about one turn.

The motor in the valve may have failed.

But you should get hot water WHILE the heating is on if you manually latch open the HW valve.

Tony

 

[xantia]

Thanks for the quick replies, the water dosnt get hot when valve latched open, could the faulty gate valve be stuck in the closed position stopping the flow of water because when turned it doesnt feel attached to anything.
thanks

 

[xantia]

check their is 230v from the stat to the brown on the valve.

Do you mean the stat fitted to the hotwater tank.

 

[Agile]

But you should get hot water WHILE the heating is on if you manually latch open the HW valve.

Tony

 

[seco services]

check their is 230v from the stat to the brown on the valve.

Do you mean the stat fitted to the hotwater tank.

yes if its sending 230v to the brown on the valve.
then the motor has failed.
as you said the valve is not opening itself.

 

[xantia]

check their is 230v from the stat to the brown on the valve.

Do you mean the stat fitted to the hotwater tank.

yes if its sending 230v to the brown on the valve.
then the motor has failed.
as you said the valve is not opening itself.

Not had chance to check the valve yet as its in the loft, if the stat is not working would the motor still work, just looking at all probable causes for when i go up.
thanks

 

[seco services]

if the stats not sending power to the valve then the motor in the valve won't move across to open.

if the stats sending power but the valves not opening then the motors failed.

if the stats sending power and valve opens but no power on orange then the microswitch has more likely failed.

 

[xantia]

Thanks to all the replies, synchron motor was goosed so replaced and now working also replaced the leaking gate valve and whilst i had it drained down replaced three trv's, just got to repair the fault on the boiler.
//www.diynot.com/forums/viewtopic.php?t=204104
thanks again.