Unit wont heat - Oster 5965 Electric Kettle

Make sure you have power to the outdoor unit. The outdoor unit on a minisplit powers the indoor unit.

that would be a problem with switch, heating element or fusible link

Try setting the thermostat at a normal heat setting. By raising the temperature too high the unit thinks that the heat pump won't be effective and go into strip heat mode.

It has a bad relay and needs to be replaced.

hello
maybe you have over current .compressor act over loud.
you wait was cooled compressor .than start again and check current and over loud and condenser fan.

If it's in cool mode, the outside fan definitely should run to remove the heat. If it's heat mode the outside fan will start only when pressure build up. If it's problem with condenser fan definitely the breaker or fuse will be blown when the amphs increased.

Unplug unit let set till cool then turn on motor has heat trip button that will pop out so it wont over heat, It should pop back in when it cools off. Make sure filter is clean and condenser is not iced over by high humidity. If unit still wont come on check house fuse or breaker it should be on a circuit by it's shelf, flip it off and back on so it is closed all the way.

Have you tried turning one of the thermostats off.? They are both talking to the same unit and they may be arguing with each other.

REMOVE THE BACK AND CHECK THE HEATER FUSE AND THE HEATING ELEMENT-MIKE

In the back of the unit there is a recessed reset switch(red) Depress it until it clicks.