Cmaray 5 Boiler - Water OK, Central Heating Not

[amarner]

Good Evening,

I have a Canray 5 boiler to heat both my hot water and central heating and has been installed for 5 years.

In past 2 days, the radiators have been cold despite the controller on wall showing heating is on, but, no noise etc…from boiler as you would expect if it was on. On closer inspection the pipe out the boiler is hot and both the pipes for hot water and central heating are hot.

The heating does work if the water is switched on at the controller. The boiler kicks in and the radiators begin to get hot but eventually cut out once the water in tank has reached temperature.

Anyone experienced this problem before or have any suggestions as to what the issue can be. The boiler appears to be working as it should…

Andrew

 

[tipintim]

Have you got Motorised valves?
Post a picture, it helps.

 

[papahape]

Have you got Motorised valves?

my first thought too , sounds like a faulty valve move it manually and see if the circuit opens ...

 

[fixter1]

3 way valve try moving the valve into manual

 

[ecowarm]

Check the ball valve is not stuck in the F&E tank, the small tank it may be dry and ball valve stuck in the closed possition.

If it is wiggle it up and down until it runs

 

[amarner]

Gents,

Thanks for the responses.

Having no plumbing know how what so ever, i presume the motorised valves are on the switches shown below. In the foreground is the HW switch with CH behind. The black lever on the CH is showing as being open as "on" at controller but no heating from radiators.

Does that mean the motorised valve is closed or open for this to occur? Is it an eaasy fix for plumber?

Andrew

 

[papahape]

if you use the lever at the top to manually open the valve and see if this is the problem first as there could be other reasons as eco has said ( process of elimination )

 

[tipintim]

I see you have a filling loop. What pressure is the gauge reading. Should be 1.5 bar.

 

[ecowarm]

thats my idea out of the window

 

[tipintim]

lol ecowarm.
Trying to see what is being described in writting throws me off too.
It does help to see a photo.
Pictures speak louder than words,