Your heat pump may not be blowing cold air because it could be low on refrigerant, have a faulty compressor, or a problem with the thermostat. It is recommended to contact a professional HVAC technician to diagnose and fix the issue.
That is exactly how a heat pump works in heating mode are you sure it's not a heat pump?
Replace Thermostat
What do you mean by "has no heat"? No air blowing out, blowing out cold air when heater is on, blowing nothing at all? Heater not turning on? What specifically is happening?
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A heat pump is designed to extract heat from the outside air, even during cold weather. It uses this extracted heat to warm the indoor air. This is why a heat pump blows warm air instead of cold air during operation.
Is it blowing cold air only or not blowing any air at all.
when running the heat-pump the air blowing from the heat ducts is not hot ( it's to cold for the heat-pump). you have a main furnace and it won't turn on ( is thermostat selected for this source), ( is the power switch for main furnace on ), ( is fuse for this furnace good). If these are good (check thermostat wiring at thermostat, and transformer).
Your heat pump may not be blowing hot air due to issues such as a malfunctioning thermostat, low refrigerant levels, a dirty air filter, or a problem with the compressor. It is recommended to contact a professional HVAC technician to diagnose and fix the issue.
Check the radiator for full coolant. Check the engines water pump and thermostat, as the engine coolant carries heat from the engine into the heater core.
Probably a bad thermostat.
If your heater is a heat pump , then yes.
Your central heat may be blowing cold air due to issues with the thermostat, a malfunctioning heating element, or a problem with the ductwork. It is recommended to check these components and consult a professional if needed to diagnose and fix the issue.