So, Sunday night/Monday morning my heating unit in the attic conked
out. Coldest day of the year so far, of course, but had been working
fine this winter up to now.

It's a Goodman GHS8, and it's not even two years old yet.

It's the only thing not working - the basement heater works fine, all
the appliances and lights, etc., so it's specific to the heater. I
checked the fuse and it is ok.

It's not entirely that it doesn't work - if I turn the heat off via
the thermostat and then back on I can hear the unit start up, but no
air, hot or cold, comes out of the vents, then after a few minutes it
shuts down.

I replaced the filter just a month ago.

There's an LED that is supposed to display error codes, but nothing
shows up on it.

I'm no HVAC expert, but I was hoping there might be some things I
could try myself before calling a repairman. It's probably something
simple, but I'm just not sure what. Anybody have any ideas on what
might be the cause?

Thanks!

On 30 Jan 2007 09:25:46 -0800, wrote:

So, Sunday night/Monday morning my heating unit in the attic conked
out. Coldest day of the year so far, of course, but had been working
fine this winter up to now.

It's a Goodman GHS8, and it's not even two years old yet.

It's the only thing not working - the basement heater works fine, all
the appliances and lights, etc., so it's specific to the heater. I
checked the fuse and it is ok.

It's not entirely that it doesn't work - if I turn the heat off via
the thermostat and then back on I can hear the unit start up, but no
air, hot or cold, comes out of the vents, then after a few minutes it
shuts down.

I replaced the filter just a month ago.

There's an LED that is supposed to display error codes, but nothing
shows up on it.

I'm no HVAC expert, but I was hoping there might be some things I
could try myself before calling a repairman. It's probably something
simple, but I'm just not sure what. Anybody have any ideas on what
might be the cause?

Thanks!

imho:

Just a guess, but you discribe no circulator fan starting. You might
want to get a professional in to service the unit.

tom @ www.FreelancingProjects.com

wrote in message

It's not entirely that it doesn't work - if I turn the heat off via
the thermostat and then back on I can hear the unit start up, but no
air, hot or cold, comes out of the vents, then after a few minutes it
shuts down.

At two years, is it still under warranty? If so, you know what to do.

The heater is coming on, but the blower is not. It may be something as
simple as the belt from motor to blower is broken. It may be the motor is
not working, it could also be a relay or some other control. Check to see
if you can turn the motor by hand.

Edwin Pawlowski wrote:
wrote in message

It's not entirely that it doesn't work - if I turn the heat off via
the thermostat and then back on I can hear the unit start up, but no
air, hot or cold, comes out of the vents, then after a few minutes it
shuts down.


At two years, is it still under warranty? If so, you know what to do.

The heater is coming on, but the blower is not. It may be something as
simple as the belt from motor to blower is broken. It may be the motor is
not working, it could also be a relay or some other control. Check to see
if you can turn the motor by hand.



But make sure the breaker supplying power to the heating unit is OFF
before you stick your hands inside it. G

Jeff

--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
The speed of light is 1.8*10^12 furlongs per fortnight.

Well, I took the cover off and the LED was blinking, but you can't see
it with the cover on. 3 flashes. According to the manual, that means
"Pressure switch circuit not closed; induced draft blower IS
operating", which it further says could be any of the following things
being wrong:

1) Pressure switch hose is blocked, pinched or connected improperly.
2) Blocked flue or weak induced draft blower.
3) Incorrect pressure switch setpoint or malfunctioning switch
contacts.
4) Loose or improperly connecting wiring.

Well, if the wiring went bad I'll have to call in a repairman, but I
could probably fix the others, if I knew what they were. I don't have
a diagram of the unit labeling each part. Anybody know where I can
find some good diagrams? I'm googling now, but haven't found anything
yet... It's a gas furnace.