The furnace is part of an HVAC or central heating system used to generate heat. Typically this is done with gas, a heat pump, or an electric element. For hot water and radiator based heating, use the boiler tag.
3
votes
2answers
336 views
Why does the pilot light go out when the furnace is running?
Every time the furnace fires up, it blows out the pilot light. Sometimes it will run a full cycle and blow out when it shuts down, and sometimes it will blow out about a minute into the cycle.
We ...
2
votes
1answer
34 views
Can a non-expandable filter be used in place of an EZ flex furnace filter?
My Carrier furnace has the EZ flex filters (16x25x5). These come with the plastic end caps that fit on the expandable filters. Can a regular filter, non expandable, of the same dimensions be used as ...
0
votes
1answer
277 views
Why is my furnace running every 7 minutes, but not heating anything?
My furnace has been running every 7 minutes for the past couple days and there has been no heating coming from our baseboard heaters. all of our thermostats are on at about 60 - 65 degrees and it is ...
2
votes
0answers
93 views
Are w1 and w2 both energized during a second stage heat call from the thermostat?
Short version: does two-stage thermostat always close W1 circuit when it closes W2 circuit, or they might be closed independently?
Long version:
I have two-stage furnace, currently connected to older ...
2
votes
0answers
185 views
Why won't my condenser turn on when I run my heat pump?
I have a York Affinity condenser. When I run my heat pump, I expect it to turn on somewhere in the cycle but it doesn't. It generally does this once a year. The usual fix is to cycle the power of the ...
1
vote
0answers
85 views
Why is my furnace blowing hot air outside?
So I have been having trouble heating my home. I noticed today that there is a vent blowing hot air outside. It is not the return, chimney or venting. Any ideas other that the builder thought we ...
1
vote
0answers
151 views
What's causing my draft inducer to stay on?
I have a new, 3-year old, high-efficiency, gas furnace in my home. I recently realized that my draft inducer, which normally kicks on before the burners and before the main blower, is not stopping.
...
1
vote
0answers
122 views
How can I clean out the pressure switch port at the inducer housing on a Lennox G40UH furnace?
I have a Lennox G40UH(x) furnace, but the gas does not ignite, because water may have entered the system while raining, or the the pressure switch port at the inducer housing has just to be cleaned.
...
1
vote
0answers
158 views
How do I know if my high limit and low limit are set correctly on my aquastat?
I have a boiler that is only providing heat for my forced hot water baseboard system (4 zones). I've always thought that the high limit on the aquastat was too low (the temperature on the boiler ...
0
votes
0answers
66 views
How can I provide my furnace with outside combustion makeup air?
I cut a 6" opening in an insulated door into the utility room then installed a 6" metal duct with a plastic exterior vent cover. I put 6" insulated flexible duct on the interior stub and let it hang ...
0
votes
0answers
164 views
Can I manually run the blower on my Lennox G12Q3 furnace?
I have a Lennox G12Q3-120-6 model furnace. Does anyone know if there's a way to manually run just the blower without heat?
There are no switches on the outside that I can see (other than the power ...
0
votes
0answers
217 views
new furnace installed - few questions
So, Sunday the fan on our 18 year old furnace died; instead of paying the $600 to get it repaired, i opted to buy a new one.
Lennox SPV98UV (i think) 98% efficient / variable speed fan. they ...
