Compressor will not activate on Xenta 121-HP

Issue

Compressor will not activate blocking the cooling or heating of the Xenta 121-HP.

Product Line

TAC Vista

Environment

Xenta 121-HP

Cause

A compressor temperature lockout exists in the Xenta 121-HP application. The lockout has a minimum and maximum temperature the source signal must be between for the compressor to activate.

The source signal changes depending on whether the application uses a air source or a water source.

Air Source - nviOutdoorTemp

Water Source - nviSourceTemp

Resolution

Ensure that the source temperature signal is between the compressor lockout minimum and maximum.