No heat i have a split system and until yesterday the heater was working - now it pumps out only cold air when i need it to heat the house. the subfunctions defrost and utdoor have mysteriously come on. what can i do? any help would be greatly appreciated

It is meant to shut off when it gets so cold that the unit cannot make warm air from outside air that is too cold. When it reaches that situation, it should be switching the heating effort to the built in resistance heating. In other words, it gives up and directs that many KW of electricity go straight into heater coils, like and electrical dryer has. It is very expensive to heat this way. Most whole house heat pumps can't handle cold air. The newer mini split ductless heat pumps lower can work with outside air temperature below freezing depending on the manufacturer.

As near as I can tell from internet information. This model is a heat pump. It transfers cold air out of the house and gets what ever warm air might be outside the house. In extreme cold weather an auxiliary electric heater should make up the difference. The filters must be clear. There is a limit what the heat pump can do in cold weather. Your electric heater may not be activating. You could try raising the thermostat. A service technician may be needed to determine why the electric heater is not working.

Try putting in central heat and air in your house don't rely on some basement heater then you will have a basement heater for when it get cold

a split system can be gas or can be a heatpump. a split system is when the condenser coil compressor and outdoor fan is outside. the other half is in the house close to your air filter .that well be your air handler. eletric heater. or gas burner .and indoor fan motor would be. i hope that helps you.

Have you changed your air filter lately?

In city water or well water system ... the cold water flows from the tank (or meter) toward the hot water heater. The cold water splits in two (so to speak) at the heater with one part going on to the house to supply all cold water needs while the other part goes into the water heater to be heated. On the other side of the hot water heater, there is a system that paralles the cold water system to supply the hot water needs of your home.

I hope this answers your question.

set the thermostat on a higher setting turn it to heat position if that don't work thermostat may be bad. Good luck Tom

This could be a problem with the interconnecting wiring or a control board problem with either the indoor or outdoor unit. I would have these issues looked out.
Hope this helps
Mat

Check your coolant level. If the antifreeze is low the water pump may not be able to pump enough of the coolant through your heater core. When the car runs faster it is able to pump more of the warm antifreeze to the heater core.

Check your thermostat and mode selector setting, thermostat setting should be set at warmer and mode selector setting should be at low heat or hight this is applicable for manual unit.
If it is a remote control just set the remote to heat mode.

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