Robert Tyrrell
Gas Engineer
- Messages
- 701
Got called to a Grant Combi 70 MKll today to find that its; cycling - 2 minutes on and 2 minutes off. The house reaches temperature but it takes a couple of hours to do so.
About 6 months back I fitted a new boiler heat control and today I've fitted a new primary store stat but it''s still cycling so ......
Cheers m'dears
About 6 months back I fitted a new boiler heat control and today I've fitted a new primary store stat but it''s still cycling so ......
- Can anyone explain to me why this might be cycling?
- What the resistance values are or the boiler stat, primary store stat, and high limit stat?
Cheers m'dears