I have a Brivis unit probably about 10 years old. I went to bed the other night and turner the controller (manual one) right down to just a trickle. Next morning I turner it up to about 12'oclock on the dial and nothing happened.
I have now got it working but for just 30mins at a time with the dial turned on full. If it is not on full and say at 12 o'clock it runs ok for 10 mins then the fan runs at full speed then switches down to low then up fast again then it switches off altogether.
I had an aircon guy come round but he just wanted to fit a complete new system and didn't come up with any explanation, I just wondered if anyone may have an idea, as it does run albeit for just 30 mins at a time.
Thanks in advance