66a series

noor288

I have a boiler hot water system 66 a I have no heat the c wire is The one goes from from transformer to the

and there’s no power coming from transformer what do I do?

noor288

the wire is burnt I will be replacing the wire, but there’s no power coming from the transformer.

109A_5

I can't see anything burnt. Better information and pictures may get you better help.

It looks like the transformer just reduces a 120 VAC control system to 24 VAC to only power the gas valve (no 24 VAC control). Is there power going to the boiler ? Just a guess, Red arrow 120 VAC power input, Orange arrows 120 VAC control. The absence of either functioning properly could disable the transformer, also the transformer could be defective.