lenox HS 18 air conditioner


Old 05-05-12, 08:31 PM
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lenox HS 18 air conditioner

My A/C compressor will not stay on, contactor does energize and fan comes on but no compressor, I jumped wires and the compressor kicked in but appears to run for a very short time and the compressor drops out, any ideas?
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Old 05-05-12, 09:09 PM
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What do you mean you jumped wires?
Old 05-06-12, 10:14 PM
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Does the compressor sound normal when it runs or just hum?

There are three possibilities:

1. Run capacitor is bad
2. One of the compressor motor windings has failed
3. The compressor is stuck or has mechanically failed

A good tech should be able to easily rule out the capacitor and check the windings.

If the compressor is physically stuck (rule out capacitor and windings), a hard start kit can be installed to try and get it going.

If the compressor won't start with a good run capacitor and hard start kit, the a/c will have to be replaced. (including the evaporator coil)

The HS18 is an old unit so it doesn't make sense to put more than a couple hundred dollars into it.
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