What does VRF-02 mean?
One indoor unit runs several times longer than its siblings.
Why does it matter?
Usually an undersized unit, a bad thermostat location, or a space used very differently from the design — the outdoor unit runs for one zone.
What should you do?
Check the heavy zone's setpoint, sensor placement and load; consider rebalancing or resizing.
This is a diagnostic rule: Energy Agent surfaces and ranks it as a reliability problem and claims no dollar savings for it, by design.
How Energy Agent prices a finding
Written by Pelorus Engineering · Brent Waluzak, P.E. (FL), President, Pelorus EngineeringLast updated