frozen gas valve
1989 Goodman PG outside ground mounted.
It stopped heating in freezing weather. Service man got ignition but flame blew back (gas valve was working). Ordered heat exchanger, installed 12 days later.
But service man could not get ignition. Said gas valve was frozen and must either get new gas valve or wait for thaw.
Temps are below freezing daily. A call for heat runs combustion fan but burner does not light. Must I buy new gas valve or can I safely thaw the valve with electric light?
Meanwhile we are using small electric heaters and many clothes.