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-   -   american standard freedom 90 problem (http://www.diychatroom.com/f17/american-standard-freedom-90-problem-94359/)

CAMERON12 02-02-2011 06:03 PM

american standard freedom 90 problem
 
I have an american standard freedom 90 that keeps going into error code 3 which is a pressure switch lockout code and won't allow the furnace to restart. Any suggestions or solutions to this issue?

yuri 02-02-2011 06:27 PM

Check the intake and exhaust pipes outside for blockage. Stick your fingers inside them to be sure no snow or debris has got sucked in there.

CAMERON12 02-02-2011 06:30 PM

Quote:

Originally Posted by yuri (Post 583458)
check the intake and exhaust pipes outside for blockage. Stick your fingers inside them to be sure no snow or debris has got sucked in there.

thanks! I did check the vent and intake. All clear. Any other suggestion?

yuri 02-02-2011 06:33 PM

How old is this furnace. Have you had it professionally serviced once a year. The condensate trap may be dirty and not draining the water from the heat exchanger. Does the exhaust fan inside the furnace run when you turn the heat up. If not then that is the problem.

CAMERON12 02-02-2011 06:41 PM

Quote:

Originally Posted by yuri (Post 583468)
how old is this furnace. Have you had it professionally serviced once a year. The condensate trap may be dirty and not draining the water from the heat exchanger. Does the exhaust fan inside the furnace run when you turn the heat up. If not then that is the problem.

three years old. The exhaust fan does run when i turn up the thermostat. Condensate trap clean.

seatonheating 02-02-2011 06:54 PM

Quote:

Originally Posted by CAMERON12 (Post 583477)
three years old. The exhaust fan does run when i turn up the thermostat. Condensate trap clean.


Call an HVAC contractor to perform maintenance. Money well spent and you'll have a nice, warm home.

yuri 02-02-2011 06:59 PM

Should have a 5 yr warranty on parts and you may want to call a Am Std. tech. If you mess with it then problems could arise. May have a faulty pressure switch or other problem which a tech with a manometer needs to check.

CAMERON12 02-02-2011 07:06 PM

Quote:

Originally Posted by yuri (Post 583489)
should have a 5 yr warranty on parts and you may want to call a am std. Tech. If you mess with it then problems could arise. May have a faulty pressure switch or other problem which a tech with a manometer needs to check.

thanks for your advise.


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