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Many People Call a furnace a boiler and a boiler a
furnace.
So the answer you are looking for may be on the boiler page
This is the rule of thumb If it blows warm air through ducts,
It is a Furnace If it has baseboard or radiators it is a Boiler. For Boiler questions click here For furnace questions, you're in the right place!
Although there are not allot of questions in this category, that does not mean
you will not be able to get an answer to your question here.
You
can
get
an
answer
by
filling
out
the
form
below,
Troubleshooting
a
furnace
can
be
very
difficult,
You
need
specialized
tools
and
equipment
to
do
it.
It
may
be
best
if
you
have
a
professional
do
it
for
you.
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How to replace a blower motor![furnace]() |
Put mouse over the area above to play video. Is this happening to you? There are a
number of reasons why a furnace will short cycle like this. But I am only
covering this one for now. This is a Janitrol Furnace. And it is installed
upside down. So it may look like yours but it is upside down. On this unit,
sometimes it would start and run for hours even days then it would do what it
did in the video then it stopped all together. and just kept short cycling. I
could see the igniter was working because I could see it glow. so I knew it was
not that. The next step for me is the flame censor. This is the way it works
thermostat calls for heat, combustion motor comes on draft is good, power is
sent to igniter, igniter gets hot, power is sent to gas valve to open gas valve
opens for a few seconds waiting for a signal from flame censor. if it gets
signal the gas valve stays on till limit is reached if no signal from flame
censer, gas valve is turned off. and the cycle starts again, and will do this a
few times, after it fails a number of times the circuit board locks out and the
red light blinks out a warning.
For
Plumbing
Problems Click Here
For
Heating
Help
Click
here
Click on any of the above pictures to see a larger view. The problem is the
flame censor (on this unit, you can have the exact symptoms and it could be
another problem) And the solution is simple. take it out, clean it with a fine
file, get all the carbon off of it and put it back. the only time you have to
replace then is if the porcelain is cracked. the fourth picture from left shows
where it is mounted (remember this furnace is upside down) next how dirty it is,
then how to clean it. and how it should look. Good luck,
for
other
instructions,
Click
here
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