Recent content by jgd

Yes, natural gas. I’ll set up with those values. Thanks

Yeah, I’ll be adding a pressure regulator up stream, I have it now. I’ll also tune the valve for 3.5 Thanks

Good afternoon. Fitter30, I slapped in a new hot surface igniter and the unit fired up immediately ! The old one glowed red hot, but apparently was bad. The error flash cadence gave no clue either. Good call. PoorUB, I did get better gas measurements. I’m seeing 49 inH20 inbound, 46 inH20...

Thanks for that. I hope to know more tomorrow, if all goes according to plan. Thanks

Yeah, my psi number can’t be right. I’ll measure in wc and get back with you. My gauge does not measure psi at low levels well. Thanks

My analog gauge is reads PSI, but not very detailed. It’s probably 3 - 5 psi. The unit has run on this pressure for 20 years. Thanks

Struggling to understand why the server was throwing errors when I format my posts with bullets. I had to remove all formatting and create one long paragraph to get my post through the up rights. Just trying to do better going forward. Thanks

I tried repeatedly tried to format my reply above, but kept getting swatted with errors, so I apologize for the one long paragraph.

OK, more data Mounting a gauge on the unit’s valve I see approximately 5 psi inbound. Gauge mounted on outbound side of unit’s valve, I see zero psi. I monitored the output side throughout the start up cycle and never saw the gauge twitch. Thermocouple/flame sensor; not sure how to check it but...

Is there an admin?

Test...

… the thermocouple was cleaned up. How do I test it? Thanks

Thanks for your reply. I did systematically jump through the safeties, finally omitting them all, no change. I do have inbound pressure and did purge the line. I’m not a fitter and don’t have a way to confirm the pressure, but it seems to be quite strong, as it blasted out for a couple...

Good afternoon. I have a Modine Hot Dawg 75AH0134 that is around 20 years old, that has never given us any problems, until recently. When there is a call for heat, the unit will go through its start up cycle, including energizing the heating element. No gas is released from the valve. The...