"programable thermostat wiring " , posted Sun 28 Dec 12:34

I am replacing an old bryant thermostat with a ritetemp 5-1-1 programable thermostat. The wiring on the old one- red wire was connected to W, white wire was connected to R5, and the green was connecte ... read more

dneilson

"Rookie Question. LuxAire won't heat " , posted Fri 26 Dec 23:41:

I have a LuxAire High Efficiency gas furnace that I think was installed in 1991. It sometimes won't heat up. Example. The thermostat temp read 60 degrees I set it to heat to 71 degrees. I h ... read more

JKettle3

"Rheem Criterion very loud "buzzing" noise " , posted Wed 24 Dec 13:22

A loud buzzing sound - can hear throughout the entire house - when the heat is in operation. Sound begins once the heat has been in operation for a few minutes. Seems to only occur in a specific te ... read more

jtg740

"Honeywell T8411r to Trane XT300c " , posted Tue 23 Dec 17:21

I have a Honeywell T8411r that usesY/W1RCGW2 OI am trying to hook up a Trane XT300cThe Trane has the following terminals availableHHOTOTG
read more

stoodo

"bryant fur. " , posted Tue 23 Dec 06:40

have repalced blower relay, and blower keeps running after burners shut down. ... read more

whitneymnt

"changing hammock-style filter " , posted Mon 22 Dec 14:52

I have a hammock-style filter and am wondering how to properly change it. ... read more

jwienen

"Wiring Problems " , posted Mon 22 Dec 13:43

Hi!I am replacing my Honeywell 874R18 Honeywell mercury thermometer with Honeywell T8611R1000 thermostat.THe wiring the original thermostat areRCBYOGWThe new ones have term ... read more

kvraman

"HONEYWELL T8011R WIRING " , posted Sun 21 Dec 23:32

I am replacing a Honeywell T874 with a Honeywell T8011R and the new unit has some different wiring codes and more terminals,does anyone know the wiring changeover? T874 -W,B,G,R,X,0,Y ... read more

JROK40

"Sequence of operation " , posted Sun 21 Dec 22:16

I have a old electric furnace in the shop here. The only identifing marks are an ICG sticker on the outside and "EL-10, 15, 20 & 25" listed on the wiring diagram (inside the cover) showing the possibl ... read more

Mooser

"blower motor?? " , posted Sun 21 Dec 11:13

Lennox g12 (about 14yrs old). Burner seems to light but no hot air. Suspect blower is not running. Loud hum noise when try turning on Fan from Thermostat. Anything else to check or is it probably ... read more

fdan20165

"AMANA HI EFF 95 GAS FURNACE - BLOWS COLD AIR " , posted Sun 21 Dec 01:39

MODEL# GUX090B35A, INSTALLED 1994We had two technicians on two separate calls check it & diagnose is "Unit Locks Out, SENSOR=2.6, CLEAN=4.0 NOW, MANI=3.5", RISE=69deg, HSI=ok" but they can't d ... read more

GKB

"carrier gas pack " , posted Sat 20 Dec 21:19

I have a carrier gas pack that works fine most of the time but every once in a while it will fail to light.when i go out to it the dispersion blower will be running but nothing else.I can pull out the ... read more

mikew4840

"Gas Furnace cycling " , posted Sat 20 Dec 19:07

My York (Central Environmental Systems) has been cycling. The furnace starts as normal, but 30-60 econds later, it shuts off (looks like the gas supply is shut off). The blower keeps running. Hot Surf ... read more

DmitryNK

"Heating/Furnace Issue??? " , posted Sat 20 Dec 14:47:

We have a Trane XE-78 furnace, with a Trane XE 1000 air conditioning unit outside. Yesterday out of no where the heater stopped working. When you set the thermostat which we usually keep on auto, an ... read more

tanya216

"chiller " , posted Fri 19 Dec 17:54

what does it mean when someone says " a chiller is loading " or " a chiller is unloading" ? ... read more

sidney

"R22 " , posted Fri 19 Dec 16:37

I'm still installing new r22 systems and know that r22 is planed for a phase out. Whats the deal with that. Puron?, then new refidgerant? Some or these systems also have a lifetime compressor warrenty ... read more

emanzb

"heat shut-off " , posted Thu 18 Dec 18:43

Theromostat: Honeywell T87F (classic)System: Heat and ACProblem: Switch heat to "on" on thermostat, house heats up to set temp.System switches off and does not come one again. Set switch ... read more

pleventh

"Taco Zone valve and THermostat " , posted Thu 18 Dec 07:49

I am finishing my basement and had to disconnect my wiring to relocate it. When I reconnected the wiring, I have a little problem with one of the taco zone valves and its 2 wire thermostat ... the zon ... read more

cduffy

"Emergency Heat Questions " , posted Thu 18 Dec 00:31:

1st post here.Trying to troubleshoot emergency heat mode for a Lennox ECB19-10.0-1P (I think this is the model number) Heating unit.I'm not familiar with how the unit was installed but have be ... read more

emyers

"thermostat blank " , posted Wed 17 Dec 21:23

Have a Carrier 58mvp gas furnace with a digital thermostat. This morning furnace was off and the digital readout blank. The furnace is displaying an error code of 33 which is called limit switch look ... read more

Eddie

"Janitrol blower wiring " , posted Wed 17 Dec 18:03

I recently installed a gmp furnace that is blowing too much air in the heat mode. on the circuit board the black wire from the IDB is connected to cool the orange to heat and the red to M1 the M2 has ... read more

backyard mech

"More Heat Pump Thermostat Wiring T-8611G " , posted Wed 17 Dec 10:12

I have read many threads and reviewed the wiring discussions on this BB and still have questions about my Honeywell T-8611G Thermostat.I have a single speed heat pump, an air handling unit wit ... read more

ruckter

"Carrier Furnace Igniter " , posted Wed 17 Dec 09:47

I have an old Carrier gas furnace model 58GS125-2. It has been hanging in there but I have started to notice something strange.The furnace has hot surface ignition instead of a pilot light. Wh ... read more

ruckter

"GE furnaces " , posted Wed 17 Dec 09:34

I have a General Electric LE034C1B HVAC unit. It is old and my best guess was put in during the 60's. I have a fan relay that I believe is sticking as the fan will not kick off at times. I can kick ... read more

zebkedic

"Bryant Furnace with intermittent ignition pro " , posted Wed 17 Dec 09:12

I have a Bryant Furnace Model 394GAZ048125. The furnace isaround 10 -12 years old. Twice in the past week the ignition spark generator that sounds a clicking noise has failed to come on. When I tu ... read more

grifscg

"Heat Pump: New Installation - New User " , posted Tue 16 Dec 13:37

I had 2 York Heat Pump Systems installed into a new home I am building in Culpeper County. I chose Heat Pumps in an effort to save money on the monthly heating and cooling costs. The duct work and pl ... read more

flwrpwr

"need help with heat strips " , posted Tue 16 Dec 05:05

I have a 96 model bryant ac unit with heat strips. The blower will not come on when the heat is in auto. The strips are heating up and cycling on and off, but I have to turn the blower on by turning t ... read more

brianricks

"heat pump to hot " , posted Mon 15 Dec 19:21

Not really a question, but more of a what in the hell. i went to a heat pump today and the old lady had the stat set on 85 and the poor heat pump was humming and pulsating and working itself. What ... read more

emanzb

"Heat Pumps: Aux Heat vs. Emgergency Heat " , posted Mon 15 Dec 17:53

I am trying to change my old mercury-tube thermostat to a nice new electronic thermostat.I have a York heat pump, which has only one backup heat source, and that one backup heat source is used ... read more

WaltA

"Blower motor " , posted Mon 15 Dec 14:59

I woke up in the middle of the night yesterday because there was a burning smell in the bedroom, the kind of smell you get when there is an electrical short. I couldn’t find the source of the smell un ... read more

kloster

"Humidistat Wiring Help " , posted Mon 15 Dec 13:11

I am trying to install a desert springs humidifier.I have a Trane TWE065EThe manual with the furnace mentions clipping the r to bk jumber and connecting the humidifier between r and bk. I did ... read more

Longer

"**Correction** to "Fan Runs All the Time" " , posted Sat 13 Dec 22:31

"...Old thermostat had common ("C")connection to TR side.." SHOULD HAVE READ "...Old transformer had common ("C") connection to TR side..."Apologies. ... read more

digitelcej

"Fan Runs All the Time " , posted Sat 13 Dec 22:26

Hi, all. Thanks for the help on the low voltage transformer. It was bad and I bought a new one (STEVECO 90-113 Fan Control Center). Replacement transformer came with a White-Rodgers RBM Type 91 Rel ... read more

digitelcej

"Good source for Heat Pump books " , posted Sat 13 Dec 20:43

I am looking for a good book for heat pump theory and troubleshooting. I have a good understanding of refrigeration theory but want to further my knowledge on heat pumps. I am 609 and 608 certified. T ... read more

rolfe3

"furnace " , posted Sat 13 Dec 10:21

I have a Rudd high efficiency gas furnace,the furnace works but trips off before it reaches temp on thermostat please help house getting colder! ... read more

jetmech

"janitrol HPT18-60 to honeywell T8611R " , posted Fri 12 Dec 20:18

I am getting ready to install a Honeywell T8611R to replace my old Janitrol HPT18-60 thermostat. The existing wiring is Y,G R O, W2, E & C. The new wiring options are R,C, O, P, B, L, Y1, W1, E, W2, & ... read more

woody16

"Honeywell T8611R wiring " , posted Fri 12 Dec 13:31

I just purchased a Honeywell T8611R to replace my Trane Weathertron BAYSTAT240A. The current wiring diagram is; R-red, T-brown (this connection is attached to the screw holder and goes through the bo ... read more

purseljb

"Rheem Transformer Question " , posted Fri 12 Dec 12:15

Hi, all. A Rheem upflow split unit. Bought used, new install (house previously had floor furnace). Thermostat came with used unit and has R,W,Y,G,1,2 contacts. Thermostat in indoor unit has C,R,W, ... read more

digitelcej

"Testing a defrost sensor " , posted Fri 12 Dec 10:44

OK, question for the guru's. History: Heil HHP030AKA1, frosts up to beat the band and never lets go of it. Replaced the defrost control board with an ICM304, which is a direct replacement for the s ... read more

millerized

"No heat on tempstar " , posted Fri 12 Dec 00:01:

I have two stage heating on a tempstar unit. The heat pump works but have no aux. heat. The coils are good but only one is connected. The resistance is 11.6 ohms. The overtemp switch tests good. The ... read more

spaceavenger