| | Preview | User | Replies | |
 | "trane rtu won't shut down " , posted Sun 17 Aug 23:33
wondering if any body ran into this problem before? The rtu won't shut off unless I pull the power. Does any body have any insight into this problem? thanks lee ... read more |
lr8
 |
Replies (5)
Re(1):trane rtu won't shut down - RCLAOAC
Re(2):trane rtu won't shut down - lr8
Re(3):trane rtu won't shut down - Jojo98
Re(4):trane rtu won't shut down - Houston204
Привет всем посетителям форума - HollyGirl
| |
| "Thermostat replacement " , posted Sun 17 Aug 09:35
I am replacing an older Honeywell T87F thermostat with a Honeywell RTH221B. My problem is that after following the instructions ,Red wire to Rh, jumper from Rh to Rc and White to W, no heat.I have con ... read more |
bentbranch1
|
Replies (1)
Re(1):Thermostat replacement - theduke03
| |
| "THERMOSTAT WIRING " , posted Sat 16 Aug 10:29
I BOUGHT A HOUSE IN NORTH FLORIDA,AND THE THERMOSTAT IS A WHITE ROGERS WITH C-BLUE,L-EMPTY,W-E-WHITE,Y-YELLOW,O-ORANGE G-GREEN,R-RED,BLACK AND BROWN ARE CAPPED OFF.I PURCHASED A HONEYWELL PRO 3000 TH ... read more |
GRS
|
Replies (0)
| |
| "help " , posted Wed 13 Aug 18:07
i need help ... read more |
ronsig
|
Replies (1)
Re(1):help - Jojo98
| |
| "Three phase compressor but contactor's2pole " , posted Wed 13 Aug 16:52
I have gone to commercial sites. to do maintenance work the roof top units. I come from a residential background.I got started on thi about 2 months ago. I'm very new at commercial. I've seen single ... read more |
Rooky
|
Replies (3)
Re(1):Three phase compressor but contactor's2 - Jojo98
Re(1):Three phase compressor but contactor's2 - theduke03
Re(2):Three phase compressor but contactor's2 - Rooky
| |
| "do i need a new coil " , posted Wed 13 Aug 14:14
ONe of our many 5 ton units failed (freezing around the pipe cap outside). The HVAC guy who came out says we have an restriction in the upflow coil (24") (which is over heating the compressor and shut ... read more |
mickym
|
Replies (2)
Re(1):do i need a new coil - Jojo98
Re(1):do i need a new coil - amech
| |
| "thermostat wiring " , posted Wed 13 Aug 12:07
I want to look up a new thermostat Honeywell TH 3210D. There is no terminal for W. My old thermostat Trane Weathertron and there are the terminals and color of wires. B-blue, W-white, X2- black, Y-yel ... read more |
ronsig
|
Replies (1)
Re(1):thermostat wiring - Houston204
| |
 | "commercial water source heatpumps " , posted Fri 8 Aug 22:47
I am trying to find out what the loop water supply temperature should be on a commercial water source heat pump. Thanks for your help ... read more |
granger
|
Replies (2)
Re(1):commercial water source heatpumps - bigglenn357
Re(1):commercial water source heatpumps - Jojo98
| |
| "Service Manual for Trane YCY036G1H0AD " , posted Fri 8 Aug 00:44
This is my first post. Hope it is in right place.I need a service manual for this Trane Package unit. I have owners manual manual but would like the service manual. I am trying to troublesh ... read more |
dobbsj
|
Replies (2)
Re(1):Service Manual for Trane YCY036G1H0AD - Jojo98
Re(2):Service Manual for Trane YCY036G1H0AD - dobbsj
| |
| "The Most Compelling Enterprise Content Manage " , posted Wed 6 Aug 01:17
Enterprise Content Management (ECM) is no longer just about technology, or just about content. It is about content, community, and context. The deluge of data and information, coupled with the ever-in ... read more |
shaguf
|
Replies (0)
| |
| "increase in liquid line size " , posted Tue 5 Aug 22:52
Is going to be a problem to increase from a 3/8" liquid line to a 1/2" existing line? Replacing an old r22 condensing unit with a good used one I have.Thanks ... read more |
maxmann
|
Replies (0)
| |
| "My old trane has 3 wires - new has four " , posted Sun 3 Aug 20:51
Hi I forgot the specs, but my new trane has 3 striped wires and a ground, but the connection from the house has 2 black and a ground, how do I wire - I wired the b/w to one wire and the other 3 togeth ... read more |
sixbello
|
Replies (2)
Re(1):My old trane has 3 wires - new has four - Jojo98
Re(1):My old trane has 3 wires - new has four - theduke03
| |
| "Changing Honeywell Chrono ThermIII to RTH7400 " , posted Thu 31 Jul 18:30
Hi,I need to change out my old thermostat (Honeywell Chronotherm III to a RTH7400). Not sure whether to follow the Coventional or Heat Pump wiring instructions. My current system is a Heat/Coo ... read more |
pakow
|
Replies (3)
Re(1):Changing Honeywell Chrono ThermIII to R - Houston204
Re(2):Changing Honeywell Chrono ThermIII to R - pakow
Cheap Cialis - KiraPlast
| |
| "Changing Honeywell Chrono ThermIII to RTH7400 " , posted Thu 31 Jul 18:16
Hi,I need to change out my old thermostat (Honeywell Chronotherm III to a RTH7400). Not sure whether to follow the Coventional or Heat Pump wiring instructions. My current system is a Heat/Coo ... read more |
pakow
|
Replies (0)
| |
| "Changing Honeywell Chrono ThermIII to RTH7400 " , posted Thu 31 Jul 18:07
Hi,I need to change out my old thermostat (Honeywell Chronotherm III to a RTH7400). Not sure whether to follow the Coventional or Heat Pump wiring instructions. My current system is a Heat/Coo ... read more |
pakow
|
Replies (0)
| |
| "Changing Honeywell Chrono ThermIII to RTH7400 " , posted Thu 31 Jul 17:55
Hi,I need to change out my old thermostat (Honeywell Chronotherm III to a RTH7400). Not sure whether to follow the Coventional or Heat Pump wiring instructions. My current system is a Heat/Coo ... read more |
pakow
|
Replies (0)
| |
| "Compressed air dryer " , posted Mon 28 Jul 19:15
I worked on a Zeks air dryer today, the suction pressure was high 125 (R-22) and the discharge was 120, the working amps on the compressor was low , I adjusted the hot gas by pass valve but it made no ... read more |
Sparkvol
|
Replies (1)
Re(1):Compressed air dryer - theduke03
| |
| "Problem with AC unit " , posted Wed 23 Jul 18:45
My son goes to karate at a school in Union NJ they have been having problems with the Ac unit for several years . Ive always assumed the AC unit needed to be replaced . But today I got out of work ear ... read more |
Plumber LU # 24
|
Replies (4)
Re(1):Problem with AC unit - mississippi
Re(1):Problem with AC unit - theduke03
Re(2):Problem with AC unit - Plumber LU # 24
Re(3):Problem with AC unit - theduke03
| |
| "Wiring Lux TX9000TS " , posted Tue 22 Jul 16:49:
Hi all,I am trying to replace my old Honeywell stat with Lux TX9000TS but ran in to wiring problemOn an old Honeywell I haveW1W2GRBY2Y1On a TX9000TS ... read more |
Ricva94
|
Replies (3)
Re(1):Wiring Lux TX9000TS - Houston204
Re(2):Wiring Lux TX9000TS - ricva94
Re(3):Wiring Lux TX9000TS - Houston204
| |
| "Trouble with Totaline replacement T/stat " , posted Fri 18 Jul 14:26
I am replacing (as needed) Totaline thermostat Mod# P374-2100 with Mod# P374-2700. The York units have stage one cooling with stage one gas heat.The jumper settings are gas,gas,O, No Hum -- per i ... read more |
lneeley
|
Replies (1)
Re(1):Trouble with Totaline replacement T/sta - Jojo98
| |
| "thermostat wiring " , posted Fri 18 Jul 12:21
Hi guys at my workplace they did a reno project and in the process of reno-ing the office space they replaced the old mercury bulb thermostats with new digital Honeywell Focus Pro 6000 series t-stats. ... read more |
stevescivic
|
Replies (1)
Re(1):thermostat wiring - harpo
| |
 | "Severe Vibration on startup " , posted Fri 18 Jul 10:06
have a curious problem with a Rheem Classic X Condensing unit upon start up. Upon Start-up, very breif vibration in unit, then a about 5 seconds later are very large (almost violent) vibration in th ... read more |
cardton
|
Replies (0)
| |
| "75 ton Trane intellipak DX " , posted Thu 17 Jul 16:18
Unit runs fine until 1 of 2 compressor circuit's trips out. Then the space pressure rises from .05 to .30. Thru the Tracer BMS I reset manual diagnostics several times until area stabilizes. 3 active ... read more |
HP3
|
Replies (3)
Re(1):75 ton Trane intellipak DX - Chiller Guy
Re(1):75 ton Trane intellipak DX - dwcaveney
Re(1):75 ton Trane intellipak DX - Jojo98
| |
| "Condenser Problems " , posted Wed 16 Jul 19:46
This unit won't start on it's own. It is a Yorkie heat E1RA pump new install by another company. It may be wired wrong (Power or Thermostat) but the 24v is not getting to the contactor. The Def Board ... read more |
hvacmicmac
|
Replies (1)
Re(1):Condenser Problems - oldmangobles
| |
| "honeywell to hunter " , posted Mon 14 Jul 03:43
I had a honewell mercury thermostat, and now i got a hunter. and the wiring lables are different, can somebody please explain to be where they go. I have 4 wires R,G,Y,and W. please HELP I CANT GET IT ... read more |
sinanianhovik
|
Replies (2)
Re(1):honeywell to hunter - wiley
Re(1):honeywell to hunter - Houston204
| |
| "Heil Rooftop Problems " , posted Sat 12 Jul 23:29
I have a Heil Rooftop and I'm not sure of the Model Number becasue it appears to be quite old. Everything has been faded out by the sun. Anyhow, It stopped cooling and I checked it and the fan motor w ... read more |
jellison
|
Replies (1)
Re(1):Heil Rooftop Problems - bigglenn357
| |
| "high suction, high head, bad compressor??? " , posted Fri 11 Jul 16:30
Copeland, CR18KQTF5980WB compressor, R-22. Running walk-in cooler. Pressures, 58 and 310. Suction temperature at expansion valve bulb is 58 degrees, liquid line at coil 74 degrees. Box temperature ... read more |
I dont know
|
Replies (2)
Re(1):high suction, high head, bad compressor - bigglenn357
Re(1):high suction, high head, bad compressor - theduke03
| |
| "carrier 48aj " , posted Thu 10 Jul 22:13
New install set up for ctyp4 {2 stage mech stat)facing burner assembly only left one comes on for 1st and 2nd stage. right burner only comes on for tempering in dehumidifaction mode. does this sound ... read more |
fittin597
|
Replies (1)
Re(1):carrier 48aj - Jojo98
| |
| "walk in reefer q " , posted Thu 10 Jul 18:27
condenser fan shorted, got a new one. threw the breaker and fan ran for about 10 secs then stopped.after approx 3-4 mins, still no fan, shut it down. why wont fan run? dont want to kill compressor. an ... read more |
jay21
|
Replies (2)
Re(1):walk in reefer q - Jojo98
Re(1):walk in reefer q - djgilbert
| |
| "walk in reefer q " , posted Thu 10 Jul 18:26
condenser fan shorted, got a new one. threw the breaker and fan ran for about 10 secs then stopped.after approx 3-4 mins, still no fan, shut it down. why wont fan run? dont want to kill compressor. an ... read more |
jay21
|
Replies (0)
| |
| "Can I replace a Chronotherm III with IV " , posted Sun 6 Jul 19:15
I have a two zone system using Honeywell III as control panels. One of them seems to have some contact problems. When I switch it on COOL it sometimes thinks I want to HEAT. It starts the compressor f ... read more |
mtiany
|
Replies (4)
Re(1):Can I replace a Chronotherm III with IV - mtiany
Re(2):Can I replace a Chronotherm III with IV - Houston204
Re(3):Can I replace a Chronotherm III with IV - mtiany
Re(4):Can I replace a Chronotherm III with IV - Houston204
| |
| "Where is my restriction? " , posted Fri 4 Jul 20:18
Maybe some of the bright minds on here can help. This is what I got. Replaced a failed 3/4 hp scroll compressor. After weighing in system charge and testing, my discharge pressure is 200 and s ... read more |
amech
|
Replies (1)
Re(1):Where is my restriction? - theduke03
| |
| "CARRIER Type: 30GZ LOW SUCTION " , posted Thu 3 Jul 22:27
CARRIER Type: 30GZ 060 0086EE Chiller 2 - circit B, Reclaim refigerant, new soleniod valve, TEV and drier, purge system with nitrogen, Vac below 200 microns. Recharge with new refrigerant R407 ... read more |
uSlipAndSlide
|
Replies (2)
Re(1):CARRIER Type: 30GZ LOW SUCTION - Jojo98
Re(2):CARRIER Type: 30GZ LOW SUCTION - uSlipAndSlide
| |
| "Return fan mandatory? " , posted Sun 29 Jun 23:52:
I'm an office building owner w/ 25-year-old Heil Gas Packs on the roof. I'm replacing all of them this fall, so don't want to put another penny in these old units. However, I have a return fan motor ... read more |
gmcquerter
|
Replies (1)
Re(1):Return fan mandatory? - HVAC50
| |
| "Hold -AC " , posted Fri 27 Jun 23:37
My thermostat has "Hold -AC" displayed on it and is not working. I changed the battery on it and tried everything possible to reset the thermostat but nothing worked. What does this mean and what do ... read more |
please help
|
Replies (1)
Re(1):Hold -AC - Houston204
| |
| "compressor not working " , posted Fri 27 Jun 15:59
i have a reach in freezer that takes mp39 for the refrigerant and trying to recharg it is impossible. My gauges wont leave the suction area. They are reading about 10. Could this be a bad compressor b ... read more |
mtcorey
|
Replies (1)
Re(1):compressor not working - beginner
| |
| "york a/c problem " , posted Tue 24 Jun 10:10
i have a york model number h2ce120a25e it has tandem compressors when it is running the low side pegs the needle on the gauges. it sounds like a metering problem but i am not sure. ant suggestions. ... read more |
lnl81
|
Replies (4)
Re(1):york a/c problem - Jojo98
Re(1):york a/c problem - Jojo98
Re(2):york a/c problem - lnl81
Re(3):york a/c problem - lnl81
| |
| "High discharge press HELP! " , posted Sat 21 Jun 18:23
Hello, I have a York 0.5 ton system with a Freeze box and Chill box 2 TXV's, I have excessive discharge pressure and lack of cooling on the boxes, I already cleaned the condensor and replaced the filt ... read more |
cat78
|
Replies (1)
Re(1):High discharge press HELP! - Jojo98
| |
 | "Help..Coil Questions " , posted Thu 19 Jun 11:37
we have Arco Aire 10 Ton unit where we are being told that the condensing coils are deteriorated beyond repair. Temporary repairs have been made...the unit continues to trip off on high head and is o ... read more |
BKRFG
|
Replies (3)
Re(1):Help..Coil Questions - deanmando
Re(1):Help..Coil Questions - Its all good
Re(1):Help..Coil Questions - Jojo98
| |
| "Altivar 21 Variable Speed Drives " , posted Wed 18 Jun 04:50
Hi All,Found a load of very cheap Altivar 21 VSD's on ebay if anyone is interested. Just type in Altivar 21 and there is quite a few! Thought id let you know. Cheers. ... read more |
efcuk1
|
Replies (3)
Re(1):Altivar 21 Variable Speed Drives - Houston204
Re(2):Altivar 21 Variable Speed Drives - efcuk1
Re(3):Altivar 21 Variable Speed Drives - Houston204
| |
