My Amana heat pump model PTH153B50AJ does not cool properly. The compressor comes on and the fan works.

if some units detect ice they will leave the fan running in an attempt to defrost the coils. If it's the outside coils and it's warm enough inside, try running the air conditioning for a few minutes, that will put hot coolant through the coils and could melt the ice for you.

Assuming this is a heat pump I'm guessing you have a bad temp sensor. Your outdoor fan is likely controlled by a temp sensor so it only runs as needed during heating. Fan not coming on and compressor still needs cooled therefore compressor protection kicking in?????

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Change motor to check do a amp draw find out how many amps motor is drawing this may tell you that motor is going

Check for pressure in the refrigeration lines because if all fans are working and the compressor is running it should be cooling. Most of the time the system is flat or severly low on freon which would mean a major leak somewhere. But first hook up guages to the system and let me know what you find ok.

Verify all your components are operating - Compressor? Condenser fan motor? Blower fan motor?
If not check voltage to any that are not operating.
If all components are operating and the coils are clean - the refrigerant level is most likely low.

sounds like your resetting the compressor its going off on high head pressure. check and make sure the condensor coils are clean. and that the fan is running properly.

freon is low or outside is very cold

Check the damper in the top back of the fresh food section. make sure that it is open and air is coming through it.

Sometimes the thermostat can have a burnt place in the fan contacts. This stops the interior fan motor because the compressor wiring is not interconnected to the interior fan. The compressor command is the yellow wire. The interior fan command arrives from the thermostat on the green wire. Check the green wire for delivering 24 volts AC to the fan relay.

During heat, the heat is electrically interconnected with the interior fan. Thus, if the thermostat is bad, the fan will work properly during heating. I know July is a bad time to turn the heat on, but this is a method to see if the interior fan works properly and is not getting the proper command during cooling.

1.check heatar of unit.
2.wireing of heater.
heater not workink.
thermostate also check