keston c36 no c/h

[robberts53]

I have a keston c36 combi 5 years old. no probs with hot water. central heating does not seam to be circulating. pump running ok. no airlocks in system, keston room stat ok. anyone got any ideas?

 

[Agile]

That would normally be a stuck diverter valve!

Tony

 

[Boilerman2]

And you have our sympathy - Keston C36 = Trouble and lots of it!

 

[robberts53]

thank you for yoyr reply.
looking into other sites, they mention replacing the hydroblock diverter motor or firstly replacing the capacitor. has anyone any experiance of replacing these?

kindest regards

 

[Boilerman2]

Unscrew the motor from the hydroblock sometimes it is possible to "wiggle" the hydroblock lever by hand to free it up, while the motor is off operate HW/CH to make sure the motor is working, if the motor just hunts (trying to move but not getting there) change the Capacitor (KEston have up-sized these) it is found in the bottom right hand side wrapped up in the wiring loom.

 

[robberts53]

many thanks for all of your help.
I took the diverter valve motor off (one screw) and was able to move the lever to heating/hot water. (no problems) the motor also worked. I wrote to keston and they sent me (foc) a new capacitor. I have installed this and all seams to be working fine.

Hope this is of help to anyone in the same position.

kindest regards

 

[Boilerman2]

And isn't the new one MUCH bigger than the original ...methinks they have had problems