______________________________________________________________________ I have a Tempstar DC90, model #NUGM100EHB1. It’s about 10 years old. I had it serviced the other day by someone who told me that inside the heat exchanger there were plugs or rivits, as he called them, missing. Continue reading

Furnace filter not working

______________________________________________________________________ Hi I have furnace of keeprite make HGF-075NS-1 MODEL. The old owner has used kenmore electrostatic air cleaner which does not work. theres a green light which is suppose to be on(as i assume). it is powered by a Continue reading

Questions about garage thermostat…

______________________________________________________________________ I just installed an overhead gas unit heater in my garage. I now need to buy a thermostat for it. Is there a certain type that should be used in a garage? The temp will sometimes get below freezing Continue reading

1987 Carrier 3.5 ton – PROBLEM

______________________________________________________________________ I don’t have the model number handy (if anyone might know this please let me know) as I’m at work and my unit is at home. 2 days ago, the a/c unit tripped the breaker while we were away Continue reading

training help

______________________________________________________________________ Have been putin charge of training where i work. Needing some help with topics, ideas, any suggestions? Replies: Tinmantu “Re(1):training help” , posted Tue 18 Oct 13:53 ______________________________________________________________________ I’d suggest “How to use a ductulator 101″ class…I see so Continue reading

Old Trane to New Honeywell thermostat

______________________________________________________________________ I have a Trane heat pump: TWR025C100A1, Air Handler: TWV025B140A1, Heater: Bay96X1411102 and Thermostat: BAYSTAT240 (3AAT80B1a1) Purchased: Honeywell T8011R Programmable. Old Wiring (Trane): R=Red, Black=T, Green=G, Y=Yellow, Blue=X2, Grey=B, White=W, O=Orange. The T8011R: Has G C R W1 (Jumpered Continue reading

Carrier Weathermaker 8000 – won’t light

______________________________________________________________________ We starting up my furnace, about the time the purge fan increases in speed, I receive the error code “43″ (or 34) I have tried cycling the system several times but with no avail. I tried replacing the ignitor Continue reading

Hunter 44360 wiring

______________________________________________________________________ Have Anana 90 command air furnace and Brand X AC compressor. 5 wires to Hunter 44360 thermostat. 2 red, 2 yellow and 1 blue. Problem: During the summer no AC until I contacted Hunter Help desk who instructed me Continue reading

Installing new thrmostat

______________________________________________________________________ My old Janitrol thermostat has 7 wires, (Y=yellow, G=green, R=red, O=#FFFAF0, W2=white, E=brown, C=blue). My new Honeywell has 5 connectors, (Rh=heating power supply, Rc=cooling power supply, W=heating signal, Y=cooling signal, G=fan). The Rh and Rc have a jumper wire Continue reading

Exhaust fan does not a always turn off

______________________________________________________________________ Wonder if anyone heard of this before and if it should be looked at by the pro’s? Janitrol GUP075-3A (appr. 15 yr) goes through cycle fine but every now and then after the heater and blower shuts off the Continue reading