"Freedom 90 post cleaning problem " , posted Sun 24 Feb 00:51

We have an older (~12yrs old) Freedom 90 furnace serviced (ducts and coil cleaning)today by Sears today. Everything seems to go well until we smell slight burning. It only happened briefly, the tech ... read more

bbelly

"question about promax recovery machine " , posted Sat 23 Feb 23:26

a month ago I bought a promax recovery machine from a seller on ebay. everything was fine until i notice that refrigerant was leaking from the inlet and outlet when the valves were in the close posi ... read more

clothe

"Payne Furnace Blower Motor " , posted Sat 23 Feb 14:52

Looking for a replacement blower motor...but having trouble finding....GE Motor 1/3 Hp 1075 RPM 5KCP39GG S336S....the motor housing is stamped S36XRV. The unit is about 5 to 6 years old. Brow ... read more

Hennemann

"Rheem 90 Pressure Switch " , posted Sat 23 Feb 10:38

Can someone please give me the correct part number for a Rheem 90% pressure switch? I have to have the service company out at least once a year (for the past 6 years) to replace the pressure switch. ... read more

sjmamiller

"Flue disconnected " , posted Sat 23 Feb 00:52:

StaticThe group of studies were commissioned by the United States Consumer Products Safety Commission not the EPA as I said in my prior post; regarding air quality in furnace closets with flue dis ... read more

dcdraftworks

"HoneyWell T8600D Thermostat - No Display... " , posted Fri 22 Feb 21:14:

The display of this unit goes blank when the oil furnace fires on (and other times as well). The T8600D is wired as a heat-only, single transformer system (1 red and 1 white wire used, with the red wi ... read more

ThotWorks

"comfortmaker RPJII furnace short cycling " , posted Fri 22 Feb 19:14

Wrote in earlier about a suspected thermostat problem. I replaced a Hunter digital programmable thermostat with a mechanical mercury switch type and my furnace quit its continuous short cycling and w ... read more

popandcranky

"water underneath outside unit " , posted Fri 22 Feb 17:24

I have a carrier 2 and half ton unit that is 13 years old. Everytime the unit cuts on to heat and then cuts off, its like the defrost kicks on and there is a lot of water under the unit on the concre ... read more

shafedog

"threader question for other techs. " , posted Fri 22 Feb 17:01

I have never used any threaders other than the heavy machines that do all the work for you. I have recently taken on a water heater contract and don't feel like doing the drops in copper due to the c ... read more

northernfitter

"wiring new programmable thermostat " , posted Fri 22 Feb 15:43

I have a Trane Weathertron BAYSTAT240/3AAT80B1A1 thermostat that I want to replace with a HONEYWELL TH8320U1008. I am not sure of the heat pump model. I was told by Honeywell that this thermostat is a ... read more

Glnnhj

"Loking for a Part " , posted Fri 22 Feb 12:00

My hvac mechanic has indicated that he has been unsuccessful in finding a "high temperature fan control" for a Singer furnace. It appears to be on serious back order from the supply houses in this ar ... read more

vambush

"control box S8600H?? " , posted Thu 21 Feb 22:21

I have a question..My thermostat calls for heat, I get 24V at S8600H (control burner ignition box), ignition spark works, PV works and makes a good flame. After the good flame, a second later, ... read more

haveaquestion

"HELP--Carrier Screen Blank!! " , posted Thu 21 Feb 22:05

I have a carrier model number TSTATCCNAC01-B, and it has been showing a blank screen since yesterday. Therefore, I cannot control temperature. I don't want to call someone out and pay all sorts of mon ... read more

aya

"circuit board install " , posted Thu 21 Feb 21:17

I installed a protech circuit board # 60-24084-82. My fans stay on and the ignitor will not light.The A/C do not work it make the breaker trip. Tell me what's wrong. ... read more

automan

"Igniter is staying on " , posted Thu 21 Feb 21:02

Can you give me a list of what might cuase this. its a clare Compact 90.I am not sure if this is happening.. I see a red glow where the igniter is.I know the Gas control valve can do this ... read more

rick31797

"thnxs " , posted Thu 21 Feb 18:28

thank u all yea its just getting started nd getting a job. i think i worry 2 much haha. k well i should get interviews by 3rd quarter bout 3 or 4 months so ill let yall know how that goes. we learni ... read more

chalin

"Too many wires " , posted Thu 21 Feb 17:53

Our Day & Night 395CAV started producing "burnt" smelling air when the heat came on. After a day or two the blower stopped coming on. The impeller runs, the burners light, and the fan relay seems to " ... read more

BAGGINS

"Help! AC heating system does not work. " , posted Thu 21 Feb 15:21

Our AC is Goodman GPG10 and it is only two years old. It uses LP gas for heating. Last night when we turned the ac on, the fan did not work.( we generally place the fan on auto.)We checked outdoors,th ... read more

song

"Furnace is always off in morning " , posted Thu 21 Feb 08:07

We have an old Sears fifteen gas furnace. Lately, every morning when we wake up(freezing) we have to manually flip a switch on the furnace. Now this morning, it wont come back on at all. I replaced ... read more

gibson23

"Intertherm gas furnace " , posted Thu 21 Feb 00:37

we have an intertherm gas furnace that's only 3 years old. the system will not light the pilot light and the error is "limit switch on or External load on W"the blower comes on fine... help! ... read more

yomullins

"AC unti blowing hot air even when system off " , posted Wed 20 Feb 22:29:

Can anyone help?? I have a VEXAR AC unit on my mobile home the last few days I have noticed it not working properly. I turned the unit off when I went to work only to come home and have a house that f ... read more

mystari

"Manometer, Combustion gas analyzer " , posted Wed 20 Feb 21:55

What is a combustion gas analyzer and how does it relate to a manometer?What are the consequences of over firing the plate rating?Thanks ... read more

dcdraftworks

"Reclaimer 80 " , posted Wed 20 Feb 19:33

I have a Reclaimer 80 in a rental that will not lite. If you turn the thermistat off and back to on it will work for a while any ideas. I am thinking the curcuit board but cannot find the book with ... read more

Thesuper

"GMP-125-4 " , posted Wed 20 Feb 18:50

I have a Janitrol gas furnace which is about 12 years old (I know about time to replace it), it runs... sometimes. So the exhaust fan comes on and the igniter glows but no flame instead the igniter go ... read more

adentdude

"Help i'm new!!!!!!!!!!! " , posted Wed 20 Feb 15:41

Hey im new my name is Gonzalo Hernandez 19 yrs old. I attend Gwinnett Tech college and am currently in my 2nd semester of heating air and refrig. I've learned a lot but things are getting pretty compl ... read more

chalin

"Armstrong Ultra SX 80 only works w/o door " , posted Wed 20 Feb 11:25

I've skimmed the forums and found similar problems with this unit, but not quite like the problem I have. A few weeks ago I noticed that my furnace just wasn't able to keep the temp up in the house w ... read more

MCHolden

"RUUD heater blowing cold air " , posted Tue 19 Feb 23:28

my parents have a rcba-37x5gg17 model heater (sorry that # is what he relayed to me so i dont know if its the model number of the unit or just the coil#), and its blowing cold air. some backgr ... read more

taxidriver

"Primary limit switch " , posted Tue 19 Feb 22:56:

I did a search and think this switch needs to be replaced...doesnt look that hard to change.The furnace will start up run for 5 mins or so.. then the burner and Inducer will shut off and 15 se ... read more

rick31797

"Tempstar Trouble " , posted Tue 19 Feb 22:02

brand new to the site... but having trouble with Comfortmaker (Tempstar) NHP030AKC1 and looking for some help!?the fan blade broke a few weeks ago and when the service man came to check it out ... read more

jwbauer

"Replacing 1F58W86 (LR27935) with RTH7400 " , posted Tue 19 Feb 21:22

I have 6 wires coming out of the oldR - Put to RC w/jumperG - to GY - to YW2 - to Aux w/jumber to EX1 - to CB - to O/BI am getting cool air but the fan is not com ... read more

lunchdiggity

"1996 York Diamond 80 " , posted Tue 19 Feb 20:18

I have a York Diamond 80 gas furnace that ignites and runs for a minute then goes into the cool down mode and then ignites agains and runs and keeps repeating until the thermostat shuts it off from ge ... read more

tcompound

"Heat limit or board "you tell me" " , posted Tue 19 Feb 20:01

Ok I have a lennox G24 series furnace. I had the board replaced 2 years ago and it worked great. I have central air and it worked flawlessly this past summer. Now this winter the furnace shuts down in ... read more

scot1759

"Good Superheat/Subcooling Readings " , posted Tue 19 Feb 19:17

Would like some feedback/opinions as to what is the correct reading for Superheat/Subcooling. Grew up in the biz on residential side, went to college got associates in hvacr and have been on the comm ... read more

MechMan60441

"Problems with Conquest 80 " , posted Tue 19 Feb 15:38

I have a Comfort-Aire Conquest 80 furnace.It is a 150,000 btu model. I just bought the house it is in as a fixerupper, when i went to turn it on it did nothing as if there was no power to the furnace. ... read more

PghREInvestor

"Bryant Plus 90 has an annoying rattle " , posted Tue 19 Feb 13:51

Our Bryant Plus 90 furnace began this annoying rattle last night. It sounded like it was coming from the blower. I removed the blower and ran it outside the furnace - no more rattle. I put the blower ... read more

soxmax

"Factory Refrigerant charge " , posted Tue 19 Feb 13:27

Hi guys, i would like to find out what the original factory refrigerant charge is for these 3 equipments, if anyone could help that would be great.YORK D4CG-120 (10 ton unit)YORK SA1 ... read more

Joey P

"Changing Thermostat " , posted Tue 19 Feb 10:30

I want to change my current thermostat ASYSTAT 570-American Standard to a Honeywell Programmable thermostat. I have been online and found that a FocusPro 6000 or a VisionPro 8000. But my understandi ... read more

LadyT

"GMP FURNACE " , posted Mon 18 Feb 21:20:

I'm a General Contractor so I don't know everything about FAUs and I'm not trying to start a fight. I have heard that Goodman had a lot of problems with GMP series. I pulled the manual today on the GM ... read more

dwcaveney

"Goodman GMS8 not turning on AC or heat " , posted Mon 18 Feb 13:39

I have the Goodman GMS8 Gas unit installed 2 years ago. I returned from a business trip to find that the heater nor the AC would turn on. The Thermostat is a Hunter programmable. I has reset the the ... read more

donbutl

"Problems with Goodman GMP075-4 gas furnace " , posted Mon 18 Feb 11:11

I have a Goodman GMP075-4 gas furnace. I have a 7 day programable thermostat that allows it to turn off and on. When I came home, the heat was not working. I immediately thought it was the thermost ... read more

nupie91