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No control power to the contactor coil. You must trace the control circuit back until you find the open switch that is interrupting the flow of power and correct the problem.

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16y ago

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What is wrong when you have to hold the contacts down in order to get the outside rheem heat pump to come on and stay running?

low voltage from thermostat is not properly connected to contactor. transformer is bad. contactor is bad. >>>>>>>>>>>> You have an open pressure safety switch on the outdoor unit or the control wiring from indoors to outdoors is too small a gauge which will lower your control voltage at the contactor.


Should outside unit be running when inside thermostat is set on heat?

Only if the outside unit is a heat pump.


What conditions lead to heatstroke?

outside in the dying heat.. running outside when it is really hot out.. not drinking enough water


Why is the outside unit not running when the heat is on?

The outside unit may not be running when the heat is on due to a malfunction in the system, such as a faulty thermostat, a tripped circuit breaker, or a problem with the compressor. It is important to have a professional HVAC technician inspect and repair the unit to ensure proper functioning.


Why is the heat pump outside unit not running?

The heat pump outside unit may not be running due to issues such as a tripped circuit breaker, a faulty thermostat, low refrigerant levels, or a malfunctioning compressor. It is important to troubleshoot and address these potential problems to restore the unit's functionality.


Why is there steam coming from your home ac?

do you have a heat pump? are you running unit in heat? if so and the steam is comming from outside unit, this is normal in the units defrost cycle


Why is the outside fan not running when the heat is on?

The outside fan may not be running when the heat is on due to a malfunction in the fan motor or a problem with the fan's power supply. This can cause the system to overheat and not function properly. It is important to have a professional HVAC technician inspect and repair the fan to ensure the heating system operates efficiently.


Is it normal for an electric heat pump fan on the unit that is outside the house to run almost continuously?

Yes, it is normal for the electric heat pump fan to run almost continuously during cold weather to maintain a consistent indoor temperature. This is part of the heat pump's operation to effectively transfer heat from the outside to the inside of the house. However, if you notice any unusual sounds or issues with the heat pump, it's best to have it inspected by a professional.


Does running the ac helps cool down the engine?

No, Air conditioning actually makes the car's engine work harder causing to heat up more. To get a demonstration of the process, put your hand over the top of your outside air conditioner when it is running. Air conditioning is a heat movement. It's moving heat from inside your car to the outside. This heat is removed right in front of the radiator, so your csr runs hotter.


How do you know if you have pulled your tendent?

you put heat on it.


Why does heat pump blow warm air instead of cold?

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.


Why not just use that energy consumed running the heat pump to run electric heaters inside the house and heat it directly that way?

Heat pump is more efficient. If you use electric heaters, 1 joule of electric energy will produce 1 joule of heat energy. If you use heat pumps, 1 joule of electric energy can pump several joules - perhaps up to 5 or 6, depending on the outside temperature, and the efficiency of the heat pump - of heat, from the outside to the inside.