CalChem vs x800?
Whats peoples thoughts?
Potterton combi, hasnt been looked after & theres signs of corrosion & crud on most internal parts.
Also boiler is cycling on/of f due to overheating. Most probally down to restiction in pipes.
If c/h thermister wires are removed & connected to a thermister externally, just measuring fresh air....very fast the boiler hits 90'. Within 10 -20 seconds
Whats peoples thoughts?
Potterton combi, hasnt been looked after & theres signs of corrosion & crud on most internal parts.
Also boiler is cycling on/of f due to overheating. Most probally down to restiction in pipes.
If c/h thermister wires are removed & connected to a thermister externally, just measuring fresh air....very fast the boiler hits 90'. Within 10 -20 seconds