Worcester 15RI - no hot water

[eddsy]

Hi

Boiler fires up and I have heating but no hot water, there is under floor heating as well.

Any ideas?

Cheers

 

[Mike Jackson]

Nothing to do with the boiler. It's a control problem.

 

[bewsh]

Could be a programmer issue, a cylinder thermostat issue or a zone valve issue, probably better to get someone in to test the components.

 

[eddsy]

Hi many thanks for your replies, it has 2 x 2 port valves. One of them has H/W scribbled on it and when I moved the lever across it had no resistance and felt loose. I tried the other one and it had resistance and moved back slowly into its original position. Would this indicate the H/W zone valve has failed, its a Honeywell and has a dimple on it. I have read this indicates that the top part can be replaced without removing the whole body?

Any advice would be appreciated.
cheers

 

[Destroyer2813]

Sounds like it has failed yes you could just remove and replace the head but i tend to prefer to change the whole valve dosen"t take long if bunging the system

 

[bewsh]

You can't change the whole head on this model - You can change the synchron motor though, but as above, I'd prefer to change the whole valve.

 

[lgastec]

Dimple on the actuator head means actuator can be removed and replaced. No dimple means actuator can't be removed. Have you tried a new synchron motor?

 

[pipefitter]

If the valve is open the lever will feel loose with no resistance, does not mean its broken.....call a plumber in