If anything is not working you will now know which part is bad.
Amana ptac heater not working.
If you do have power then you have an issue with your heating coil.
I have an amana ptac in my shop model pth153b50am.
Test is now complete.
To determine if the thermostat is defective set the air conditioner to cooling and then use a multimeter to test the thermostat for continuity.
Unhook those 2 cables for the heater and run an ohms test.
Amana packaged terminal air conditioner units are known for their reliability but as with any product things can go wrong.
If you do not see voltage then you have an issue with your controller board.
After a few minutes the heater starts again for a while and stops again it keeps doing that the room stays cold.
It starts heating the inside fan turns the unit is set on 90.
The manual reset process with clear any settings that you have changed and return everything back to the factory default.
All lights turn on and low heat mode begins.
If the thermostat does not have continuity while the air conditioner is set to cooling replace the thermostat.
Check for wiring and piping errors in the connection between the indoor unit and outdoor unit.
Ptac 2 amana pth123e35axxxab.
If the compressor fails outside of the 5 year warranty period it is often better to replace the unit.
If the thermostat does not have continuity while the air conditioner is set to cooling replace the thermostat.
The unit operates but does not cool or does not heat.
To determine if the thermostat is defective set the air conditioner to cooling and then use a multimeter to test the thermostat for continuity.
Looking for a new ptac.
As of about a month ago the heating module of this unit does not seem to be working it only blows cold air on heat regardless of the temperature settings.
After a few minutes the heater turns of but the inside fan keeps turning and normal cold not heated air comes out.
Some thermostats may also control a heater and as a result will have three terminals.
Now if you want to test the heating coil just shut off the unit and unplug it from the wall.
Amana ptac units can often be repaired if the issue is electrical.