WORCESTER HIGHFLOW 400: Hot Water OK but no Central Heating?

[herault]

Hello,

I've got a WORCESTER HIGHFLOW 400 RSF

As it's getting nippy I turned the Central Heating on last Thursday, and it worked for one day and then packed up.

Hot water is OK, but no CH, however, the pump is really hot?

I've bled / checked the rads, water is clear and no air escapes when I bled them.

Could this be a water diverter problem?

Any hints on how to get it working much appreciated!

Thanks!

David

 

[nickso]

diverters are prone to failure. you would need to go through the fault finding to be sure.

changing a diverter on these isnt particularly hard but its not a job i would recommend for a beginner.