Blocked plate heat exchanger sludge. Potterton Peforma no hot water. Heatinggeek
13:04
Blocked Plate Heat Exchanger Magnetite Sludge - Viessmann Vitodens 100
7:42
Blocked Plate Heat Exchanger (Sludge) | No Hot Water | How To Unblock | Viessmann Boiler
2:28
After cleaning, I put the cloths to wash
13:53
Boiler heat exchanger blocked. Diagnosed with no tools?
9:44
worcester cdi plate heat exchanger removal / cleaning - no hot water combi-boiler keeps going on off
9:58
Vaillant Ecotec Pro - Plate Heat Exchanger | F20 / F24 | Hot Water Coming & Going?
18:16
No Hot water or Heating: Multi-meter fault finding Part 1
7:25