Is EPH CP4i Compatible with Worcester Greenstar 4000 Combi Boiler?

[fitzykev]

Is the EPH CP4i Compatible with Worcester Greenstar 4000 Combi Boiler. I have been told it will work bytthe opentherm wont work.

 

[CountryFan]

It’ll work standard on/off but Worcester like Vaillant/Glow worm have their own control version of opentherm, so that part won’t work.

 

[fitzykev]

It’ll work standard on/off but Worcester like Vaillant/Glow worm have their own control version of opentherm, so that part won’t work.

Any way around it?

 

[CountryFan]

Any way around it?

No. EMS (Worcester’s own control) or standard on/off.

 

[Mister Banks]

Any way around it?

There are ems to open therm converters available but their compatibility with your particular boiler would need checking.

 

[fitzykev]

There are ems to open therm converters available but their compatibility with your particular boiler would need checking.

What third part smart thermostat would work with the boiler around about the £150 mark?