I would say you need a new fan motor.
If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79
The most likely things, in order, are:
1) There is too much dirt, dust or lint clogging the squirrel cage fan, slowing it down and causing the motor to overheat and shut off.
2) The motor is clogged with dust or dirt and is overheating and shutting off.
or 3) the ductwork is clogged, causing the motor to overheat and shut off.
God bless your efforts.
SOURCE: Replaced thermostat on FA4ANF030 with Honeywell model rth3100c does not work
if you have a newer t-stat your heat pump reversing valve is either o or b depending on the type of system you have
SOURCE: Air handler only blows air for 3-5 minutes before shut off & not cycling frequently
Sounds like it could be a very weak run capacitor on the blower motor. Run capacitors are sized specifically to the needs of the motor. When a run cap gets weak, the motor trys to compensate for it by drawing more power. More power draw = more heat in the motor, then the motor will overheat and shut off to protect itself. When the motor cools off it will automatically restart and run until it overheats again. Keep in mind that I am a technician that normally diagnoses equipment in a hands on manner. There are many practices and concepts that transcend all air conditioning systems but it is a constantly evolving industry. I live in south eastern WA and I don't see Amana units except as window units. It is possible to have something else causing this problem (faulty thermostat, failing thermal relay(if used), problem with electronic controls(if used)) there are a lot of potential variables
SOURCE: 1997 Amana 2 or 2.5 ton heat pump, 13 seer - air handler only blows 4-5 min
do you have a totaline t-stat. they and some other brands have a fan recirculation setting in the installers menu.
this is assuming that this happens in addition to the heating or cooling normally
SOURCE: fuse blowing on tappan air handler
most of the time its out by the ac unit . you have a shorting thermostat wire .. the outside unit has a large wire thats 240v and a small one that 24v thats the one you want to look at . look for bare wires , look where it goes into the wall , thats the common place . "critters" love to chew thermostat wire . so take a look . .....please rate this answer , i need votes . thanks
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