Recent content by deveonspeedking

No noises from the pump!

The CH pipes don't get hot when DHW is called for. When DHW is called for, the burner light comes on for say 15 seconds, then goes out.

The DHW flows intermittantly warm then cold. By warm - maybe 20deg C despite the stat being set up high. Altering the stat makes no difference. The CH runs properly (hot)

Our Isar was providing proper "hot" hot water but on Saturday decided to go on strike. Now we can only get luke warm/cold water. The temp setting on the boiler is quite high, the status display shows "d" and the burner light stays on for a minute then goes out. The water from the taps is, at...