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I have an amana dual fuel heat pump with LP gas furnace. the furnace will not light. the ignitor heats up, acts like it's not getting LP to the burner and i don't get 24 volts to the pressure switch just above the gas valve, or to the gas valve itself. i cut the power to the unit, removed pintle to the gas valve to ck for gas to the valve and it's o.k.,. what do i need to check next, i don't know how to get codes out of self diagnostic system and don't know if these codes would effect the furnace when its in the emergency heat mode, which is where i'm trying it?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

Therinnaiguy
  • 1420 Answers

SOURCE: Amana 80SSE Furnace

Not much info to go on, but lets look at a few possibilities. Your thermostat could be turned to the ?Fan On? setting, make sure you put it in the ?Auto? mode. Or it could be bad, or there could be a short in the wiring. Open up the access panel on your furnace. Lets eliminate the thermostat from the equation by disconnecting the red, white and if you have a yellow wire at the furnace. Mark down which wire went where. The furnace will have a door safety switch that will have to be taped temporarily closed to test the furnace. With a short piece of wire (2-3" long), strip off 1/2 inch of the insulation on both ends. Secure one end on the R terminal where you removed the red wire from your thermostat. Take the other end and touch the G terminal on the same electrical board. Your fan will start. Don't worry about an electrical shock, the voltage is only 24 volts. Now with one end still attached to the R terminal, touch the W terminal where the white wire was attached. The furnace will now try to fire up. Hold it there until you see that it did start. If you did this and had success, I would say it was your thermostat or the wire going to it. Last resort would be a bad control board. If you want, you can do test your thermostat wiring by removing the thermostat from it's mounting plate. Put all wires back where they were on the furnace. Make sure the access door is back in place and secure. Take that same jumper and jump across the red and white wires on the mounting plate. Again the furnace should start up. Have a helper jiggle the thermostat wires where accessible when the furnace is running and see if it remains on or shuts off. If everything checks out, replace the thermostat. Good Luck!

Posted on Oct 08, 2007

  • 124 Answers

SOURCE: I have a Trane gas

almost a classic sign of a bad gas valve. pilot is lit so gas is available. FAN COMES ON AND 24 VOLTS TO gas valve so there is a call for heat . gas valve doesn't open so it looks like its bad.

Posted on Nov 10, 2008

Accurate Joe
  • 61 Answers

SOURCE: amana furnace ignitor does not

It is most likely your hot surface ignitor. See if it glows when you first turn the furnace on and let me know.

Posted on Nov 29, 2008

  • 12 Answers

SOURCE: Amana furnace will not light.

Try tapping firmly on the gas valve while it is trying to open. If it ignites, you will definately need a new gas valve in the near future (but this little trick might get you by for a while). If not, try using a meter, to make sure you are getting 24v to the gas valve. If you are getting 24v to the gas valve and it is not opeining, you have a bad gas valve. If you are not getting 24v to the gas valve, you have a different problem like a bad transformer, ignition box, or circuit board.

Posted on Dec 16, 2008

  • 288 Answers

SOURCE: Goodman Heat Pump E.Heat mode kicks in by itself (unit in A/C).

you have a white and yellow crossed up in the low voltage circuit

Posted on Jan 24, 2010

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