American Standard Heating & Cooling - Recent Questions, Troubleshooting & Support

Had error code 91 on Trane XL19i thermostat. Heat season on duel fuel system. Repair tech said board is bad ($963) and transducer ($1000). Unit is 3 ton 12 years old. Does it make sense to repair or put in a new unit?

American... | Answered on Feb 21, 2020

possible no 120 volt to unit check fuse and start up capacitors if ok fan motor

American... | Answered on Dec 24, 2019

High and low voltage AT the motor with no motor function is a bad motor. Should have 12 to 13 volts DC on r+ and r- (I believe are the correct terminals) You must test this when the machine is trying to run. Yes, it's dangerous, hire a licensed contractor!!

American... | Answered on Jun 21, 2019

check voltage to unit if ok check ignitor

American... | Answered on May 23, 2019

low pressure cut out. refrigerant leak

American... | Answered on Mar 26, 2019

american standard error of 156... on a car? If PO0156, thats an ODB2 sensor... possibly the second O2 sensor on your emission system. You can reset the code and see if within 100 miles it lights back up... Likely it will. You may have a burned out catalytic converter... or a bad O2 sensor... or a blown head gasket, or many other things. If that is the ONLY code I would go forward with the O2 sensor. Look it up on ebay, year, make and model of car. Typically if one o2 goes, the other will follow. It is symptomatic of the cat going out though. How many miles on the car? More than 150,000? Likely its the catalytic converter. They are a consumable in your car. It will affect your mileage significantly while the code is on, and typically if it is the o2 sensor itself that has gone bad ( between 30 and 100$ per) and the cat is ok, if you don't fix the o2 sensor, the cat will burn up (cost between 200 and 700, and a bunch to swap out) Get it checked out, you're looking at more bucks the longer you wait

American... | Answered on Feb 24, 2019

are you running a schedule? try the permanent hold!!

American... | Answered on Feb 15, 2019

Google tcont800 installation manual. option530 should be 0 not 1. Press system button, 2 and 4 square hold until screen changes, option 530 --0

American... | Answered on Jan 17, 2019

Could be a number of things:
Could be as simple as having bad batteries in your thermostat “ if applicable” some thermostats do not have batteries.

Could have a programming error “ this could happen from a power surge or outage. In this case the thermostat would need to be reprogrammed.
Could have a bad thermostat.

Could have a short on the heat pump itself.

Could possibly be none of the above, though I would trouble shoot in this order.

After checking batteries and programming I would suggest contacting a trained HVAC technician to further diagnose the issue.

American... | Answered on Jan 06, 2019

Your question makes no sense. You dont have a heat pump with ONLY emergency heat. Is it working or not???

American... | Answered on Jan 02, 2019

This lights blinks a sort of Morse code, a number that corresponds to a chart located somewhere on the furnace. It's usually on the doors that you remove from the front. For example, a "" would be the number 2, which the chart may say indicates something like "ignition failure" or "pressure switch open."

American... | Answered on Jan 01, 2019

Would need more info, which door are you talking about? Blower door with power switch? At what point in the firing sequence does the unit fail? So the burners ignite?

American... | Answered on Dec 20, 2018

What relay does he click?

American... | Answered on Oct 30, 2018

possible shorted ignitor

American... | Answered on Sep 03, 2018

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