Hi :) I have the Trane Furnace that just turn on the gas valve and burn the gas just about 3 second and then stop. No power from the circuit board to the gas valve when it stop burning. LED code is quick flash (call for heat, no error). I though the problem is caused by the flame sensor and tried to replaced the exact flame sensor and then the circuit board but nothing changed. The gas valve is working fine (when it igniting, I connect 24V power supply to the gas valve and it burned until I disconnect).I check that pressure switch and the limit switch, all of them are closed (when the inducer blower is working). The wire connect from flame sensor to the circuit board is good (when I left the flame sensor touch the unit, the fuse burned, that mean the flame sensor is connect to the circuit board, right? :)) It seem to be very easy to tell the the problem is the flame sensor but it's not. Please help Thank you so much
On older tranes if 120v power is reversed it would do that try switching leads on pigtail to board. make sure to unplug first!
SOURCE: heat pump not cooling after wiring damage repaired.
Do you have the model number? This would help find the code
If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c
SOURCE: aluminum wiring air conditioning
All that in most areas (alum wires) is not accepted for the reasons you have---Best thing here is not use it as risk of fire is there--consider having it replaced--not cheap but cheaper than a house catching on fire.
552 views
Usually answered in minutes!
×