"Carrier 58pav 24v " , posted Mon 22 Sep 14:34

Hi,I've got a Carrier 58PAV. The failure code is 24, indicating a problem w/the 24 v. I tried to replace the 3A fuse on the control board, but it immediately zapped.What should I look at nex ... read more

kessyl

"Copper tubing size. " , posted Mon 22 Sep 13:05

I'm about to have a new AC unit hooked up to my house. It's a 3 1/2 ton 14 sear R410 Rheem. The contractor said it should use a 1 1/8 copper line. Mine is 7/8. Now he's saying the 7/8 will be fine ... read more

sormi

"Backdraft Dampers " , posted Mon 22 Sep 12:07

I am looking for some information on why there would be rust inside a backdraft damper? also if rust is around the outside of the pipe am I looking at the same problem. I have been told that there is ... read more

dewman92164

"Help with weird HVAC problem " , posted Mon 22 Sep 10:39

ok where to start............when running the A/C the system seems to run ALOT and when you bump the temp up to shut the system off it will not shut off if you turn the heat/cool switch to off the sys ... read more

cjbarron5

"touch screen stats " , posted Mon 22 Sep 01:14

Hvactechin, Learner & houston204.... Just a quick note to thank you guys for responding to my question about touch screen thermostats... all three of you picked the honeywell th8000 series ... read more

Rpfingsten

"Conditioning a small space " , posted Sun 21 Sep 21:21

I recently constructed a building that has a 28 foot span, 12/12 pitch attic truss. I plan on building out the attic area for a small apartment. As is typical with an attic truss, there are 4 foot kne ... read more

jlapedavis

"373LAV " , posted Sun 21 Sep 18:09

I have a 373LAV furnace with CES0110057 control board. It goes through the normal ignition sequence, turns on the draft motor, then turns on the igniter, but it does not turn on the gas valve. The gas ... read more

gigiga88

"Hunter Fireplace Problem " , posted Sun 21 Sep 13:13

i came accross a problem with a hunter fireplace model#hfs40-3, the burner fires when i turn the gas valve to the on position even if the t-stat is not calling for heat. im looking for some pointers.. ... read more

gamacher

"Tech to Tech " , posted Sat 20 Sep 20:40:

Hey Fellas. I'm on call this weekend and recieved a call from a customer who wanted a second opinion. She had another compny service tech come out to troubleshoot her high efficiency Trane furnace. He ... read more

Lou Lopasco

"Manifold Gauge Question - Heat Pumps " , posted Sat 20 Sep 16:42

I was wondering - does the high pressure gauge on the manifold set always get hooked up to the high pressure line (small line) on a heat pump, and the low pressure gauge always get hooked to the sucti ... read more

tbeyler

"Keeprite Furnace Pilot Light " , posted Sat 20 Sep 12:37

Could someone help me identify where the pilot ignition switch is on a Keeprite furnace? The furnace won't turn on from the thermostat so I suspect the pilot is out. The inside panel of the furnace ... read more

Liftow

"Condenser Fan ailing " , posted Sat 20 Sep 10:58

My condenser fan sticks when the unit turns on. If I push the blade slightly the fan will start working and get up to speed. The fan will continue to run until the unit cuts off. Then the sequence is ... read more

Madnpcfl

"Hunter 44860 Thermostat vs Trane " , posted Fri 19 Sep 18:12

Using these forums and the instruction book I just attempted to replace an older Trane Weathertron thermostat with the Hunter 44860.I've read and reread the forums and book and am very sure th ... read more

kaiserklan

"Tripping Limit switch conundrum " , posted Fri 19 Sep 12:30

I have a 100,000 btu Tempstar downdraft gas furnace installed in a horizontal position in a crawl space. It was installed in 1998 and other than having a combustion blower assembly that fell apart ha ... read more

tmohapp

"Biasi b3 or b4 " , posted Fri 19 Sep 09:46

I am going to change my old oil boiler with a Biasi. My home is 1900sq ft not including my un finished basement that is 800sq ft. which I will finish in the future. I've had some local plumber come an ... read more

tac618

"Finishing Basement " , posted Thu 18 Sep 21:22

I currently have a Trane XR90 gas (propane) furnance (5 ton unit) and a 2TWR2 heat pump for my first floor (approx 2500 sqft). I'm in the process of looking to finish my basement, which is another 22 ... read more

csmpez

"no heat " , posted Thu 18 Sep 20:58

i have rhemm electric ignite furnance and no heat when in heat mode /nothing but the aircondition works fine. ... read more

cool p

"Condenser fan runs sporatic " , posted Thu 18 Sep 15:06

I have a Tempstar 2200 split system gas/electric. I noticed that it seemed quieter than normal. The outside condenser unit/compressor was running. The condenser cooling fan was not. I check inside ven ... read more

bearngs

"gas valve or ignitor " , posted Thu 18 Sep 08:33

Trying to figure out if gas valve or ignitor is bad? I am getting 24volts to the valve once the ignitor lights but I am not sure if it is long enough before it times out. I ohmed the ignitor and got ... read more

csimp

"Touch Screen Stats " , posted Thu 18 Sep 06:07

Anyone have any experience with the touch screen thermostats. Having a 5 ton and 2 ton Air Ease heat pumps installed and am considering touch screen thermostats from either white rodgers or honeywell ... read more

Rpfingsten

"Free Ruud Furnace " , posted Thu 18 Sep 01:27

I have an old oil burner converted to gas (50% eff.) and I recieved a free Ruud furnace (UGFD10EZCMS) and would love to install it as it's a modulating 90% eff furnace, only it's too big. I to ... read more

Tpgroceman

"Weil-McLain Gold Series Boiler - any opion? " , posted Wed 17 Sep 21:40:

I am interested in used a Weil-Mclain Gold Series boiler, Model number wtgo-4. It is about 7 years old (not sure) and is rated at 85% efficiency. It is coming out of a house that switched to geother ... read more

FalconRunner

"GOODMAN INSTALLATION " , posted Wed 17 Sep 10:10

Installing a new goodman unit,upflow application, the base heater has a angle of cabinet metal bent up about 1 inch with a few drilled holes in it, and will not allow the coil to rest on top flush, or ... read more

TIMPAT777

"LF24 Unit heater " , posted Tue 16 Sep 21:41

i have a LF24 unit heater and its not proving the pressure switch. The inducer housing and port is clean. Inducer is pulling 1.5 wc to the switch. Amps on the inducer is .65aac. Has anyone ran into th ... read more

hvactechin

"Upstairs ducts not working " , posted Tue 16 Sep 20:27

I get plenty of heated air on my first floor registers, but almost nothing upstairs. I have looked for a blockage, but have not seen anything. I have also checked the dampers which are open. Any help ... read more

n8nln

"Oil,Wood&Coal Furnace " , posted Tue 16 Sep 19:59:

Would like some feedback about the Tarm "OTK35" system. Installed in 1979, it burns oil,coal and wood. We're wondering how efficiently it burns wood to heat the whole house. I relize the obvious, ie: ... read more

ret435

"puron compressor questions " , posted Tue 16 Sep 06:31

Hi. My dad bought a Carrier compressor for my house on ebay. It uses Puron refrigerant and i just bought brand new Goodman gas furnace and coil. The compressor is three tons and the heater is too. My ... read more

davwells1

"change out a brand new board " , posted Tue 16 Sep 00:09:

I just installed a brand new American standard 2 stage furnace, wired up the thermostat, wired up the a/c unit, started it up and it ran fine. so then the next day went to start it up again and only ... read more

oc40jr

"coleman furnace " , posted Mon 15 Sep 18:32

Can anyone help find a wiring diagram for a coleman presidential furnace model # 7660series 856serial # 1725498The problem I am having is the pilot won't lite and the blower st ... read more

spark07

"sometime condensor stop running " , posted Mon 15 Sep 13:04:

MY BROTHER HAVE A 4TON TRANE HEATPUMP THAT IS 20YEARS OLD,AND A WEATHERTRON THERMOSTAT.THE CONDENSOR CUTS OFF OFTEN,WHILE THE TEMPERATURE INSIDE THE HOUSE IS HOT.I WOULD APPRECIATE SOME HELP AND GUIDE ... read more

bpg

"upgrade air handler electric coil " , posted Mon 15 Sep 07:53

I have a Lennox cb31mv-41 air handler and it came with a 9kw electric coil. I would like to up the size to a 15kw coil. What part number coil will my service man need and is it just a simple switch, ... read more

dmboct19

"RTH7400 old Trane help " , posted Sun 14 Sep 22:06

I have an old Seco TA 7060 mercury two stage thermostat with a Honeywell RTH7400.The AC system is old Trane w/ heat pumpAirHandler: TWV036B140ACompressor: TWD736B100AThe old thermo ... read more

john84

"Trane TWE037E13FB1 and 2TWX4036A1000AA " , posted Sun 14 Sep 21:39

I have a Trane model number TWE037E13FB1 air handler and a Trane model 2TWX4036A1000AA heat pump. They do not seem to be playing well together. Ice constantly forms inside of my unit, and I have had ... read more

danieljwhite

"TRANE HEAT PUMP BWD724A100B0 " , posted Sun 14 Sep 21:12:

MY TRANE WEATHERTRON HEAT PUMP RUNS CONTINUALLY while in the cooling mode,the thermostat works properly because the air handler turn on and off at the set tempature, but the compressesr on the outside ... read more

CEJ624

"Replacing weathertron with hunter 44860 " , posted Sun 14 Sep 18:14

I have a conventional electric heat/central AC system. The old weathertron thermostat was acting wacky so I bought a Hunter 44860 digital programmable unit. I set it for conventional electric heat mod ... read more

bob76535

"a/c blown fuse " , posted Sun 14 Sep 17:56

a/c house fuse blowes cant check voltage because of fuse.could it be from bad points or bad capacitor.wiring to unit looks good. what else could be the problem..unknown and frustrated ... read more

mikemj

"QUOTE ON FURNACE " , posted Sun 14 Sep 07:41

We need quotes on the purchase and installation of a Tempstar,Model # T9MPV075F12C1. We live just outside of Gravenhurst, Ontario on a year round road - easy access. We have existing duct work i ... read more

lorna

"Weird gage readings " , posted Sat 13 Sep 19:20

My house has a 3.5 ton Rheem unit that doesn't seem to be cooling as good as it did in the past. I cleaned the coils and checked the airflow and everything is fine with that. When I attached gages t ... read more

sanmb

"Zero Percent Interest Transfer Balance Credit " , posted Sat 13 Sep 09:56

[size=14][color=red]Cards For Good and Excellent Credit. Best Balance Transfers Offers! Apply Now![/color][/size] read more

allgenresaaca

"Reliabilty - air handler versus condensor " , posted Fri 12 Sep 10:40

I am pairing a 2 year old Trane TEC air handler with a new XR Trane 13 condensing unit; 2.5 ton. It is a match. Reason is too complicated to bother explaining. Of course now I cannot get a 10 year ... read more

Learning2