Question about Heating & Cooling
We have an Amana 80SSE Furnace. The furnace came on by itself when the thermostat was turned off. It was blowing cool air and the blower would not turn off. We had to turn it off manually at the switch. We do not have a manual in order to troubleshoot the diagnostic error: 1-flash: system lockout (retries/recycles exceeded).
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
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Posted on Jan 02, 2017
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