The 24v and the TH/W is how the 24v is routed inside the module.
The 24v is now sent to the vent connector while the TH/W is sent to the circuitry.
That means if you connect to 24v on the new module nothing happens unless there is a dummy vent plug.
They keep changing this connection as the board used to know if there was a vent connected.
You can turn the pilot gas pressure up. It can only go so high.
It has been a month since it seems my furnace was fixed.
Now it is a bit colder now.
And when I call for heat from my controller, I can here it clicking and trying to light the main burner. It takes more than 10 times and about 70 seconds to light the main burner.. I am guessing that it is doing the same as before but it does light up after 10 tries.
What could be wrong now?
Earlier I replaced the ignition module a and cleaned the pilot flame sensor. No cracks were found in the ceramic of the flame sensor and I could not see any other faults either.
Dear forum,
My heating system (Carrier Performance 96 58UVB) stopped working over the past few days. From the error code, it indicated that the flame rollout switch was tripped. I could reset the switch and get it back on, but only after 15-20 min, it trips again.
The box housing the igniter and the flame is hot to the touch after running for a 5-8 min. In comparison, another identical unit (58UVB) that heads up my basement was not as hot.
Comparing the two units, a notable difference is that the working heater (to heat my basement) turns on the blower shortly after the flame is on, but the one failed (to heat up my first floor) only has the blower on intermittently or never turn on.
I suspect that if the blower is not on, then the heat will build up in the igniter box, and trip the rollout switch.
I saw some videos talking about replacing the blower capacitor, is this what you would recommend or there might be other sensors that are not working?
thanks
Folks:
Easiest to watch my 1 min. Youtube I took of the furnace (see bottom of thread). Bottom line is I think I've had some condensation flow back into my furnace--but maybe it was so long ago I shouldn't worry about it?
I run a Lennox EL296UH090XV60C 96% AFUE 2 stage 90,000 Btuh furnace. No water issues; no error codes, etc. However, I've found evidence of water in the past coming in or around the exhaust section.
I opened the condensation trap clean out side and water flowed just fine. My video shows some water stains but they look to be super old. Just not sure what would cause that lower stain on the right side of the furnace. Maybe just a back plug at that end?
Once again, it's in heat mode and runs every day and I see NO water anywhere. These stains are for past water, obviously. Furnace, right now, runs happy with no issues.
Link to my video:
[url]https://youtu.be/iLFURNl4tVc[/url]
12-24-22, 12:25 AM
