You need to do a few things to diagnose your heater
When the heat pump doesn’t work, there are a few things that you can check on your own before you call in a professional… It’s pressing to make sure that the control unit is set to the main heating mode.
If the control unit does not work in the heating mode but it still works in the cool mode, then you surely have trouble with the heat pump.
If the heat pump does not work in heat or cool, the control unit may actually be the problem. It doesn’t cost a lot of money to buy a control unit. Plus low money Supercenters plus hardware stores will carry a few weird models in stock. If the control unit does not solve the problem, then you might need to check if the fuses plus circuit breakers are all on; most of the heat pump repairs are due to faulty or loose wire, and dirty air filters can also prevent the flow of air… But a lack of air flow can cause a number of problems plus eventually ruin the entire heat pump; the heat pump should have an up-to-date filter every other month as long as it is the cold, wintertime time season. All of these repairs can help solve several heat pump problems plus save the homeowner hundreds of dollars on a call to the professional heating supplier; when my family plus I woke up to a cold house, every one of us used these step by step tips to learn that our control unit needed to be replaced. I was going to call someone to help, but every one of us managed to solve the hectic issue on our own… Now the heat pump works fine plus every one of us saved a big fee as well.