- 21 Apr 2017
- Reaction score
We've got a 10 year old Grant Vortex (outdoor, 36kw oil fired) has developed a odd problem. If you turn it off and on, it works fine (mostly, the hot water temperature is a bit inconsistent) but if you leave it for a long time it stops working. No CH or DHW. There are no warning lights on, it's all fairly cold inside the boiler housing - however, if I turn it off and on again it works fine. Any ideas? Getting fed up of going outside in my PJ's every morning!