"trane upcm " , posted Sat 25 Oct 19:41

Hello - I've been trying to track down Trane's PCM edit and UPCM edit software and manuals. If anyone can help me out with this, I'd very much appreciate it. ... read more

jcp_ny

"Honeywell RTH7500 wiring questions " , posted Sat 25 Oct 17:38

I've scoured the net and am at a complete loss. I am replacing my old Honeywell T874R1822/Q674L1710 thermostat with a Honeywell RTH7500. The system that it controls is a Friedrich Climatemaster mode ... read more

KrapfHomes

"Inducer Fan on Goodman/Janitrol gmp075-3 " , posted Sat 25 Oct 17:18

Went to turn on heat this year, won't work. The draft inducer fan does not turn on, therefore the pressure switch will not close. 3 blinking lights. Cleaned out the blower assembly, blew and sucked ... read more

anotherday

"CAR SXC " , posted Sat 25 Oct 15:37

Hey i've been trying to find the service manual for a carrier sxc, the pain in the ass with the warp switch and lockout. if anyone has a link, id appreciate it. ... read more

BDtech

"vertical to horizontal " , posted Sat 25 Oct 13:17

acan a ruud heat pump air handler model ubhc 21j 11 nfc that is currently mounted vertical be changed to horizontal? If so does it already have the horizontal condensate pan installed or do I need t ... read more

dwcage

"furnace shuts down before blower starts " , posted Sat 25 Oct 04:38

oK since no one has posted any help i have worked on this furnace all day and spent 55 dollars on parts that didnt help, but it gave me a new way to look at this problem.. It has nothing to do with th ... read more

COALFARMER

"Apparent Dumb Question " , posted Sat 25 Oct 02:42

OK, I bought my house 4 years ago. It had a mercury thermostat, but I wanted a programmable one. No gas in my neighborhood and since my outside unit ran both during heat and cool cycle, I assumed I ... read more

flashraider24

"Hole found in exchanger " , posted Fri 24 Oct 21:53

Hello - We just moved into an older home this past spring. We used our furnace a few times since then - and in the past week or so started noticing fairly strong oil smell when the furnace cam ... read more

twocents

"General heat pump question " , posted Fri 24 Oct 19:44

In a system with electric auxiliary heat, how does the system know when to activate the electric heat?Xander08 ... read more

Xander08

"Help with Lennox XP16-024-230-2 " , posted Fri 24 Oct 18:32

First I really enjoy this site. I am a student in sophomore year at the CC. Tired of being ripped off. My predicament is I have a XP16-024-230-2 condenser, the airhandler is a Trane TWE030C140A1, h ... read more

newbie09

"Blower doesnt start " , posted Fri 24 Oct 18:24:

I have lennox ugf90. it's about 4 years old. Air filter is new.The problem that i have is it doesnt blow hot air.Thermostat initiates the heating sequence, the combustion air inducer does ... read more

vano

"Carrier 8000 weathermaker " , posted Wed 22 Oct 11:42

My carrier furnace is about 8 years old and it is starting to show its age. I set my thermostat at 21 degrees and the furnace does not even come on. The status light will flash with one short follow ... read more

kital

"heater help " , posted Fri 24 Oct 14:39

hi when I runs the cold a/c works fine when I turn the heater the gas line sound like it is shaking and making noise heater works but does that noise system 3 tons gas application help ... read more

gabriel1

"Heater cycles too much " , posted Fri 24 Oct 14:37

I have an electric heater and replaced the mechanical thermostat with a Honeywell Chronotherm IV Plus. The problem is now my heater cycle too much. Sometimes only 2-3 minutes pass before it kicks o ... read more

utgrad

"coleman evcon blower will not come on " , posted Fri 24 Oct 12:11

I have a Coleman Evcon model DGATO75BDC 14 years old.. In the past 3 years i have replaced 2 igniter bars 1 blower motor and last year a fan switch...This year on my first start up of the season it ... read more

coalfarmer

"Comfort-aire Reclaimer 80 " , posted Fri 24 Oct 11:40

My problem is I see the igniter glow, then the burner kicks on for about 25-35 seconds, then burner goes off, and blower goes on for about 10-15 seconds, then blower goes off, and cool down fan comes ... read more

Koober

"What size is my unit? Can I maintain this sys " , posted Fri 24 Oct 10:46

I am considering a new heat pump system. But not sure what size I have now or if it is even correctly sized to begin with. My bi-lvel home is approx 1800sq ft. Some of the research I have have done so ... read more

Timmer691

"York Diamond 80 question " , posted Fri 24 Oct 00:57

I have a York Diamond 80 P2MP model furnace (1993) that as of late is being quite the pill. When the thermostat gives the call for heat the furnace goes through the normal process. The ignit ... read more

just_1_pint

"water leaks between heat exchanger " , posted Fri 24 Oct 00:16

I have a Carrier Weathermaker SX furance Model# 58SXA080-JG . After a heating cycle there is water on the floor around the base of the furance. Looked in blower compartment and see water around blowe ... read more

bschraeder

"Fan/Limit Switch " , posted Thu 23 Oct 22:40

Hey guys! Need some help on wiring a fan/limit switch. It has actually six wires going to it. The fan side is 115v and the limit side is 24v. But it also has two wire which are located in the center o ... read more

DW Air

"Thermostat Problem " , posted Thu 23 Oct 21:33

Hi,I have a Ritetemp thermostat and a Unico system. The problem is that when the heat is supposed to go on it does not. The thermostat recognizes that the current temp. is below the target temp. a ... read more

axeslayer666

"re: wiringpictures of diagram and fan control " , posted Thu 23 Oct 09:17

hi!this is the diagram and a picture of the fan control iam having trouble with.waiting for your help.thanks!

"Main burner not working " , posted Wed 22 Oct 22:36

my furnace (RUUD) got a problem about the main burner, it is use a robertshaw 34NL-306A iginition control module.the current status is : glow bar lite around 30 seconds then small flame light arou ... read more

yvrsonic

"aruba crown boiler overheating " , posted Wed 22 Oct 22:07

Hi Guys,I turned on the furnace the other day for the season. It raised the water temperature to where I can hear the water boiling in the radiator then I had to shut off the furnace because i ... read more

laszlo

"BAY28X139 to Hunter 44860 " , posted Wed 22 Oct 20:55

I have the BAY28X139 but I'm trying to go to a Hunter 44860. This is the configuration I have found on the web. Is this correct?W = W2X2 = EB = CG = GO = OY = Y1R = Rread more

eorb99

"furnace won't come on automaticaly " , posted Wed 22 Oct 19:06

my furnace will only kick on if i push the up temperature button on my progrmable stat. i changed stats and it did the exact same thing. it runs fine once it is manually turned on. i checked all wir ... read more

lapflange

"HEAT CUTTING OUT " , posted Wed 22 Oct 18:47

I HAVE RECENTLY NEEDED TO HEAT MY HOUSE AND THE HEAT COMES ON AND BLOWS HOT AIR FOR A COUPLE OF MINUTES THEN STARTS BLOWING COLD AND THE TEMPERATURE DROPS ... read more

jzernechel

"Ruud UGDA-100C-ER furnace " , posted Wed 22 Oct 17:38:

I just bought this house and tried to start the furnace up for the first time The previous owners had turned the pilot light off. I got the light lit but when I turn the thermostat to heat and set t ... read more

lross1186

"A little help please " , posted Wed 22 Oct 16:01

My house (semi-detached) is less than 800 sq feet and needs a new furnace (no AC).I lean towards a Lennox but wondering if someone can suggest the type I need or what to look for in a furnace (oth ... read more

puzzled

"Intermittent blower fan insanity " , posted Wed 22 Oct 12:28

I have a Carrier furnace, UPM thermostat, about 4 years old. Intermittently the blower will run full-tilt when the thermostat is not asking for heat, or when the thermostat is set to off. After 2-5 mi ... read more

duanes

"Musty odor - Heil 2 1/2 Ton PHF3 Heat Pump " , posted Wed 22 Oct 09:56

New unit installed in May 2008. From first day a musty, heavy odor comes from both cold and hot air through vents in the house. Never occurred with old Tempstar unit. Replaced drain assembly (manufact ... read more

jeffcarr69

"wont fire " , posted Wed 22 Oct 08:22

Have a coleman evcon mod # BGU07512A Furnace worked fine yesterday, call for heat this morning and nothing on furnace cycles. Light in logic board is a steady green which is normal. any suggestions on ... read more

solutions

"help: troubleshooting my Lennox gas furnace " , posted Tue 21 Oct 23:28

Hi,I have a Lennox G16RQ3X-50-3 intermittant pilot ignition gas furnace.Just stopped. period. a few nights ago ... won't spark .. won't come on ...checked all the obvious first ... read more

Pigman

"Pressure switch " , posted Tue 21 Oct 20:17

I got error code 3 = pressure switch stuck open on a York GY9S080C16DH11G The schematic can be found here:http://www.yorkupg.com/PDFFiles/035-20370-001-B-0405.pdfI don't seem to have ... read more

mwalla

"ECM programming " , posted Tue 21 Oct 19:58

Greensboro NC: thats where I am, and after trouble shooting my heat cycle, I find that what I need is my ECM to be programmed correctly. It will shut the fan down to 30% flow when the heat strip assis ... read more

adoremus3

"Furnace Manuals " , posted Tue 21 Oct 19:34

hey everyone im new to this site. im an hvac mechanic, only a few years out of college. im looking for installation and troubleshooting manuals for as my furnaces i can get, if anyone has a good link ... read more

BDtech

"Mini-split system " , posted Tue 21 Oct 17:44

I am in need of installing a mini-split system in a room that is approximately 180 sf. I have had two separate contractors to the house and both have recommended the installation of a mini-split sy ... read more

jbz

"Baystat339 to Honeywell RTH7400 " , posted Tue 21 Oct 15:55

"BAYSTAT339 programming to Honeywell RTH7400" , posted Tue 21 Oct 10:31--------------------------------------------------------------------------------We recently installed the hon ... read more

krowan

"high effiency oil furnace " , posted Tue 21 Oct 13:22

I Need to find a used high effiency oil furnace...any ideas where to look and what is good? I found a Rheem Imperial but cant find details on efficiency rating...got ideas? thanks ... read more

jangel2

"heat problem-sporadic " , posted Tue 21 Oct 12:33:

My Bryant 340mav sometimes won't start other times fine-heat ok. the pressure switch is okay. when I check not running the code is 3-1, vents seem okay but -the inducer motor is idle but very,very hot ... read more

brian3