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Question DetailsAsked on 4/1/2014

What can be wrong with my gas furnace?

AMANA Gas 2 stage furnace will start up and then shut off just as quickly as it went on. The sticker on the furnace say's High Efficiency air command 80 sse11

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2 Answers


You need an HVAC technician to look at it - probably abround $100 plus or minus about $30 for an inspection/diagnosis, plus of course parts and labor for any repairs. Search the List for local ones and their reviews and ratings.

Could be a number of things - "lag" between startup and shutdown temperature too tight at thermostat, thermostat A/C - Heater switch got moved to wrong position, thermosstat needs 9V battery to work right and it is dead, bad thermostat, bad flue or duct temperature or airflow sensor, bad wiring connection, ignitor or gas controller or gas supply problem (if not firing), fan failing to kick in, backdraft damper failure, electronic board failure, flame "rolling out" of firebox so safety sensor is shutting it down, etc, etc. No way to diagnose or estimate repair cost from here - a lot of items that could bring total bill to $150-250 range for the simple items, others like master controller boards can run up to $1000 range for replacement. Usually a fairly simple problem, but you rarely know till you get in there elbows deep.

Good luck - hope for your sake it is just a sensor that needs replacement.

Answered 6 years ago by LCD


OK - somehow I lost part of my response. That number does not come up as a model - I think that is a brand plate number, like GTE or SE added on a car anem. Model number usually starts with BU or GC, sometimes L or H with letters and numbers behind it.

That brand has a reputation for Pressure Sensor/Switch failures - both in the switch and because the flexible tube to it gets plugged, so that could be it. Not a major repair.

You did not say if your sensor light (red LED I beleive) is blinking when it starts and quits - number of blinks identifies which sensor is causing the failure to start or making it shut down.

Answered 6 years ago by LCD

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