Biks
New Member
I have a Weil-McLain Ultra Series 3 gas boiler. I'm getting this loud thump when it starts it's PREPURGE cycle. Should it be this loud? Is this normal? Should there be any sound?
Weil-McLain Prepurge Thump (video)
- Thread starter Biks
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Fitter30
Well-Known Member
Inducer fan needs to be pulled and inspected along with the heat exchangers. Fan running should be smooth running and just air noise that bang could be delayed ignition.
