Mend > Home Heating Systems

Mend Worcester 15ri Heating Valve Programmer

No HW but HW+CH works fine?

Hi

Just bought a new house but got problems with the hot water. When I switch both HW+CH everything's ok. If I just have CH then they fireup ok. However when I just switch the hot water on then the boiler comes on for a few minutes and then shuts off.

The system has a Worcester 15ri boiler and drayton 3 way valve. I've changed the valve but still no joy.

I'm no expert but these are my observations. When I switch the HW on from the programmer, the 3 way valve moves to the HW side. You can feel water flowing in/out of the valve but its cold.The boiler then comes on after a few clicks. None of the pipes to/from boiler warm up. The boiler then switches off after a 2/3 minutes.

Cheers

Luckydip
September 2013

Worcester Worcester 15ri Heating, Home Heating Systems Heating Valve Programmer

Thanks - using a honeywell programmer which allows selection of HW or CH or both at the same time.

There is no immersion in the cylinder so that would suggest one has never been fitted.

Heating only, heating + hot water ok but can't seem to get hot water only going....

Luckydip
September 2013

your heating system is not a combi /or condencer boiler that is ware your prob is un lesave a emurtion for hot warer your worter and heating will not work simaltainuasley you need a combi terry

terry
September 2013

it depends on which programme you set to work ,if its honeywel C Programme than its hot water priority when it reach set temp than all water divert to heating ,you can not have heating only you have to turn hot water on as well, but if you have Y programme than only you have any one at time

ltd
September 2013

Mend > Home Heating Systems

No HW but HW+CH works fine?

No HW but HW+CH works fine?

I can answer this question ...

No HW but HW+CH works fine?

Related Questions ...

ideal w rs460?

combi oil Worcester greenstar heatslave 12/18 switches off?

He 30 ISAR boiler heating coming on when not set to?

potterton ep2001?

potterton ep20001 programmer wont light hw?

New replacement Netaheat profile pcb not working?

Converting to Y Plan system?

drayton wireless room stat?

Problem with my Vaillant eco tech 428?

How do you fix intermittent heating problem?

Mid way valve fault??

Central heating confusion?

Heating and hot water?

lp112 programmer is live and display works but is not giving an output to t?

Pump runs when boiler satisfied?

How to mend ...

Other models...

Related Categories

Topic