checked the pilot light.. it is on... and it seems like it is the only thing on... with the STAT set 'ON' and 'HEAT', the fan runs but i would expect to see all the burners on in addition to the pilot light...
Ok, round wall most likely has a blob of mercury inside it so no click. If you pop the lid off of the stat you can see the blob move around as you turn the dial. Sometimes there is a little flash when the mercury makes contact as the electric jumps. That's about my extent of my knowledge though
If your furnace is very old check for pilot light. I think anything recent won't have one though.
yeah the unit has to be about 30 yrs old.. it is an old american standard... i was thinking about replacing it yet since i haven't moved into the house yet... but i need to run the heat in the winter so the pipes don't burst... so if it is the stat that need to get changed, ill just replace it until im ready to move in and change the whole furnace...
On is just for the fan (some like to have it running all the time to move and filter the air), Auto turns it on when heat/ac is needed. Your Stat may be bad.
^^ +1. The on/auto switch only controls the fan.
The lack of heat is another problem. Try setting the fan to auto, then set the thermo to a high temp. If the fan doesn't kick in within a couple of minutes the heater is not getting a "go" signal from the thermostat. Might check the connections on the back and see if you are getting power to the thermo.
Does your furnace try to kick on at all when the stat is set on Auto and the dial is set above the current room temperature? If the furnace does try to kick on, but does not blow heat, the furnace itself may not be properly going through its purge cycle and tripping itself out on a safety. If the furnace does not try to start its purge cycle at all, I would say you have a bad stat. I found a lot of helpful information on http://forum.doityourself.com/when I was installing my humidifier. May find some more information & help on there.
Set the thermostat to the lowest setting.
You said you hear the heater come on so it's probably not the thermostat
Pop the cover off the front of the heater and see if it ignites.
If you hear the fan on but no flame chances are the ignitor or the thermocoupler is bad (no I'm not making this up).
99 SSM 3.2 TL
Comptech Sways, Exhaust, Headers
NEUSPEED Strut Bar
TypeS IM/TB/custom CAI
Mugen cooling mods
Apexi VAFC molded in sunglass holder
OEM Underbody Kit and Spoiler
Chrome Shift Plate
SSM Interior Trim
BMW 7 Series Sidemarkers
Clifford IG9000 Alarm
Helix Precision HXA-500Q MKII
CDT HD-63DT-S / CL-6X
2 - CDT Audio MS-100 10” subs in custom Element Enclosures
it ended up being the thermostat... the fan would kick on when i have it set to 'ON' but the air was not warm... so i figured that the stat was not sending for heat which confirms why the pilot was on but the burners wouldn't fire up...
i took apart the thermostat and touched the 'RH' wire with the 'W' wire... left the fan on 'AUTO' and went down to the furnace... the burners were on and in a few mins the fan kicked on and the air was warm...
went to home depot early this morning and picked up a new digital programmable stat... installed and ready to go... i'll check back after i leave for work...
thanks everyone for your help... the temp inside the house dropped below 32oF overnight and i didn't want the pipes to burst...
If the furnace does not try to start its purge cycle at all, I would say you have a bad stat. I found a lot of helpful information on http://forum.doityourself.com/when I was installing my humidifier. May find some more information & help on there.
thanks.. it was exactly that...
and i never visited that website till now... it looks very useful...
And now with a programmable thermostat, you should be able to lower your energy costs. win/win
i dunno how much it will be reduced.. i only keep the heat at 55oF since no one is in the house with it still being renovated... i just don't want the pipes to burst...
once i move in, i will prob shop around for a more updated model... this American Standard is dirt old and prob 30+ yrs old... it runs like a champ still but i am sure i will save alot more after updating to a newer one...
so my next thread will prob be a poll of Carrier vs Trane...
Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Acurazine.com content, comments, or advertising. Acurazine.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Acurazine.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.