Problem:
Extended Time At Compressor Low Speed Oil Recovery Mode UC400 WSHP Variable Speed.
Resolution:
Extended Time at Compressor Low Speed (Oil Recovery Mode)
When the compressor operates for 90 continuous minutes at the minimum speed, the compressor speed shall ramp to 50% for 3 minutes and then will be released back to normal operation. This is to insure that oil is getting back to the compressor. This is designed into the UC400 program.