Verify correct operation of 2 stage furnace

22:05 ______________________________________________________________________ I have an Amana amv9070 2 stage variable speed furnace which is controlled by a Honeywell RTH7500D thermostat…this furnace was installed last winter. How do I verify if the furnace is actually working on both stages…I do notice Continue reading

condensing heat exchanger

______________________________________________________________________ I have a Carrier high efficiency gas furnace, Model 58DXC, with a failed secondary (condensing) heat exchanger. Can anyone help me with the removal and installation procedure? Ernie Replies: acefurnacefxr “Re(1):condensing heat exchanger” , posted Mon 14 Jan 07:01 Continue reading

Question regarding ignitor/pilot module

______________________________________________________________________ The part I’m looking at, Honeywell Q345 comes in three types. Could someone explain the difference between right/left/front single tip style? Q345 Nonprimary-aerated combination pilot burner and ignitor. Used with the S86, S860, S8610, or S8670 in intermittent pilot Continue reading


20:01 ______________________________________________________________________ Hi Folks. KEEPRITE UPFLOW/HORIZONTAL NTC5,,NTN5/GNJ (NOxModel) I have a very noisy Combustion Motor upon start up. It’s noisy for about 3-5 mins until it’s up to speed. If you manually push the motor the sound goes away. It Continue reading

Mold on Vents

______________________________________________________________________ Just recently, I noticed mold on the vents throughout the house -I have a two year Trane heat pump and see no signs of moisture around the air handler. Any suggestions on what might be causing the mold? Thanks, Continue reading

Heat pump blower question

______________________________________________________________________ I recently bought a new thermostat to replace my old baystat240 by Tran (Weathertron). I switched it out with a Honeywell RTH7500 since I have a multi-stage heat pump. Everything went very well I think following alot of the Continue reading

Trane XL1100 Pilot light / pressure switch?

08:59 ______________________________________________________________________ I can’t get my heat to fire up when I command it via the t-stat. It quit working in April when we had a strong wind storm, I tried to relight the pilot light, and failed. Since it Continue reading

need help again

______________________________________________________________________ liked the honeywell thermo so much that i bought another.problem is this old honeywell is a subbase Q674E 1049 and base is a T874C1018.the old subase uses W1 W2 G Rc and Rh are jumped and Y1.New Honeywell is Continue reading

Honeywell Aquastat L8148a

______________________________________________________________________ We purchased a home built in 1932, the home has been gutted by ourselves. The thermostat was just wires hanging out of the wall. There are only two wires but no labels. Looked at the furnace and found the Continue reading

Coleman 3700A Heat Pump

______________________________________________________________________ I have a coleman heat pump installed in my home SERIAL NUMBER: 059127787 PRODUCT ID…: 3748A911 PRODUCED DATE: 3/10/1992 I have a couple of questions 1. Can anyone tell me if the reversing valve is (cooling mode) or (heating Continue reading