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Can I put a lower amp fan motor on a condenser if the one has a higher amps

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You air conditioning system is designed as an entire unit. All the parts were selected to work together.

The condenser fan motor has been selected to match system voltage, provide enough horsepower and RPM to spin the a fan with "x" number of fan blades with fan blade pitch or angle that will pull enough air across the condenser coil to cool the hot refrigerant gas enough so that by the time it reaches the expansion valve it will be in the ideal temperature range to provide maximum cooling in the evaporator coil.

Changing components with unlike replacements creates strain, inefficient cooling and potentially early failure of parts.

Posted on May 07, 2014


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Posted on Jan 02, 2017

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SOURCE: Original AC Condenser fan motor had three wires L1

Yes, that can be confusing...hook the tan wire with the white strip onto the same line wire as the one going to the capacitor...usually the L2 then in reality you have the two tan wires hooked onto the common and the F terminals of the cap...


Posted on Aug 16, 2010

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SOURCE: I bought a replacement Dayton electric condenser

The tan/white wire can be insulated/capped and not used. Use and ohmmeter to take a resistance reading between the tan/white wire and L1 & L2. There will be no resistance between the tan/white wire and one of the others. This will be the common wire. Connect it to one side of the contactor. Connect the tan wire to the fan terminal on the contactor and the other wire to the common terminal on the capacitor (that is if you have a 3 terminal capacitor, if you have a 2 terminal capacitor connect tan to one side and the other wire to the other). Then connect the other side of the contactor to the common terminal on the capacitor (on a 2 terminal capacitor connect the contactor to the side that doesn't have the tan wire on it).

Posted on Aug 16, 2010

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The capacitor may be weak if it has not been changed with the motor, which will cause excessive amp draw. Also may need condensing coil cleaning to reduce static pressure on the fan.
*Some motor ratings do not reflect what is actually needed for proper operation in some cases a higher amp motor is required.

Posted on Aug 27, 2011

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*Some motor ratings do not reflect what is actually needed for proper operation in some cases a higher amp motor is required.

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