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  1. HVAC
    Hi it's the middle of the night and my whole family is sweating. I installed a Learning Nest Thermostat downstairs in my new 2-story home earlier in the day. This replaced an older Trane thermostat. Easy swap. Then we left and came home. Downstairs was cool... But right before bed we went...
  2. HVAC
    Hi, my heat pump system started acting up this morning. The air handler has some error codes on it that I can't find information on. I have a tech coming out tomorrow, but I'm curious as to what they are.
  3. HVAC
    Here’s a video of what’s going on IMG_4560.MOV
  4. HVAC
    I'm starting to shop for equipment to replace an aging gas furnace and air conditioning system. I'm looking at 80% efficiency 100,000-BTU/h furnaces and 14-15 SEER 4-ton air conditioners. I thought I had decided on Goodman equipment because it seems to have the best online availability of...
  5. HVAC
    My TRANE TUE Furnace starts and heats normally until the set temp on thermostat is reached. Once at temp the furnace gas flame turns off(as expected) but blower motor fan stays on and I get an error code(5 flashes) "flame sensed with gas valve off". The blower motor continues running instead of...
  6. HVAC
    I have installed an Aprilaire 600M humidifier on my Trane model 4tec3f36b1000aa. Its a heat pump with electric coil auxiliary heat. There is no circuit board in the unit and i need help on electrical connection. I would like the humidifier to only run when it calls for heat. (might need a...
  7. HVAC
    My sytem: Daikin Model DZ13SA0421AA 3.5 ton 13SEER heat pump, Rheem Upflow Oil Furnace Model No. ROBD-112QBGA, Honeywell R8184 M 1051 Oil Burner Control, Smart Kit Dual Fuel Model DFK-4 The installer of 2014 tells me that the heat pump quit working due to a power outage/surge that fried the...
  8. HVAC
    Morning all. Bought a used XV80 for my garage. Gas and chimney ready to go. I think I understand the thermo wiring, but wanted to be sure before starting it up. I want to run with a single stage thermostat. No cooling, humidistat, or any additional equipment. The furnace itself with W1...
  9. HVAC
    I have trane XR80 - TUD - model. Today, igniter was gone so I replaced it with new one and noticed, it stays glowing during complete heat operation. When heat is OFF, igniter goes off. Not sure if this is normal behavior or something is wrong here.
  10. HVAC
    I just got a new house recently, which has a Trane XT300C thermostat on the AC (not a heat pump with heat, just AC). It seems the fan "on" setting (fan should stay on always) doesn't work. I'd like to be able to use this, e.g. for air filtering and white noise at night. The fan control...
  11. HVAC
    I've got an XE 1200 model TTP048C100A1 that has worked pretty well for 23 years. A few minor repairs here and there, but nothing major. I have recently noticed that when the compressor unit is running the fan motor makes a clunking rattling sound. It starts and runs great, but while running...
  12. HVAC
    I have a 2004 Trane XL14i outside HVAC compressor+fan unit, model 2TTX4048A1000AA. Mice got in an chewed the wires, and also chewed at and messed up the schematic and wiring diagrams! That makes it somewhat difficult to be sure I am repairing this correctly. Some can be mostly read, but with...
  13. General DIY Discussions
    Hi - I recently noticed my home humidifier was not working, it was an old Carrier. I replace the solenoid, the humidistat (even though I knew it was ok) and the circuit board. Nothing worked, so I purchased a new one from Carrier. It showed up and is a Totaline. I installed it just as the...
  14. HVAC
    I have a Trane XR90 propane furnace that is not working for me. I get 3 flashing lights, which specifies that I am getting a Pressure Switch failure. I have done some troubleshooting and the situation is not getting any clearer. If I check continuity on the two connectors on the pressure switch...
  15. HVAC
    Trane XE 78 Furnace White-Rodgers 50A50-405 IFC Honeywell CT3500A4453 Thermostat Power- There is an audible hum when furnace is powered on. No apparent door switch, although schematic shows one Thermostat- I hear a click after a few seconds when I set it on to provide heat IFC STATUS- LED...
  16. HVAC
    Our thermostat comes on, the air handler blows, but the outside unit does not come on. We tested the capacitor, its fine. We replaced the single. Pole contactors with a double pole, everything seems to test fine but the fan and compressor don't come on. When we manually override the contactor it...
  17. HVAC
    Hello, I just moved into a home that has a TRANE XE 78 in the garage, and I can't figure out how to change the filter. The side panel says it was installed in 2002. I reached up inside as you can see and pulled out 2 of these metallic looking filters, but they were just sort of propped up in...
  18. HVAC
    i have a trane ex1000 heat pump model twr030c100a3 and during a routine maintenance i found what i think is some kind of sensor of some sort mounted at the bottom of the compressor. It's a 4-5 inch tube type sensor at the very bottom of the casing with a 2-wire regular black cord going to it...
  19. HVAC
    One vendor wants to replace the condenser unit with an "American Standard" ... claiming that they are as good as Trane becuase they are manufactured by same company. (I'm in San Antonio, TX) Your thoughts?
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