A988_O: Compressor Control Lost

EcoNet - A988_O ยป

Status

After three strikes, unit locks out until a hard reset is performed by cycling power off to both indoor unit and outdoor unit for 3 minutes.

Description

Drive cannot control compressor speed or cannot properly determine compressor speed.

Expected Operation

No operation.

Cause

Most likely cause is mis-wiring or disconnected wiring to the compressor. Other, less likely causes are a failed compressor or failed compressor drive.

Solution

Check compressor and motor windings for open or shorted windings. Check all wiring to drive and correct any issues. Check plug harness to compressor for any visible damage and replace accordingly. If motor/compressor windings are within tolerance, and harness is correct, replace drive.