Our ducted refrigeration unit is playing up. Doing things like turning on by itself and heating the house when we never turned it on. Then other times we wld turn cooling on and it wld not work and sometimes it wld. The thermostat was not kicking in either it kept pumping out the air. We got a new motherboard but still not working right and now we have air cond sometimes and no heating. It neva cools the house enough and is still hot and you have to turn it on and off outside and not from unit inside. We have heard it is cause of the wiring of the unit

Would be hard to look at problem from this distance,, sounds like a look / see situation. by a service expert