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Got the heater working today Disconnected line in basement in front of shutoff valve & blew air from garage back into basement. Nothing came out of pipe and air flow sounded good so reconnected everything. Purged air from line in garage and heater started right up. Set pressure to 3.5 out of...

I found the problem. The input gas pressure drops to 0 when the heater gas valve opens. Now I have to find what is causing the drop in pressure between the basement and the heater. going to start in the garage where it comes in & work backwards to the basement. Hope its not in one of the...

The valve is a Honeywell SV9410M 2902 5H76382B I did take the plastic cover off to check the circuit board. I saw no burn marks on the top & bottom of the board. The 6 led flashes are "System lockout After 1 hour lockout reset delay, control will reset & initiate a new ignition sequence" I...

Bought a used Hot Dawg heater last summer. Just installed this week. Won't light. HD 45AH0134 s/n 30011023399 circuit board date code 1999 5.5" gas pressure into gas valve 0" gas pressure out of gas valve Turn on & purge fan runs for about 20sec spark igniter goes on (glows red) gas valve...

I have a Reznor SFT 60 that won't start. This started about a week ago when we had the cold weather (5 deg F). I replaced the thermostat but no help. I then read online that a guy heated the circuit board with a heat gun. I tried this and heating the board for about 10 seconds it starts &...