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Why air condition compressor is overheating?

Updated: 10/24/2022
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Rixaan

Lvl 1
14y ago

Best Answer

IT COULD THAT YOUR SYSTEM IS EITHER OVERCHARGED OR UNDER CHARGED. ALSO CHECK YOUR FURNACE FILTER.AND MAKE SURE YOUR OUTDOOR UNIT is clear of dirt and obstructions.

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There are several reasons for a compressor to overheating

High compression ratios are the result of either lower than normal suction pressures or higher than normal discharge pressures. Changes in suction pressure will affect the compression ratio more rapidly than changes in the discharge pressure. For this reason, it is important to keep the suction pressure at its highest possible value.

Causes of low suction pressure can include incorrect sizing of components, misadjusted or defective metering devices (TXVs), loss of refrigerant charge, plugged driers or strainers, and excessive suction line pressure drop.

Although not as sensitive to change as the suction pressure, the discharge pressure can still greatly affect the compression ratio. Keeping the discharge pressure within normal operating conditions is still important.

Causes of high discharge pressure can include dirty condensing coils, undersized discharge line, a blockage or recirculation of condenser air, erratic condenser fan operation, refrigerant overcharge, noncondensibles in the system, and an undersized condenser.

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