10-15 min · 7 steps

VRF: Poor or No Cooling / Heating

Split a VRF capacity complaint into a single-zone valve issue, a mode conflict, a charge problem, or the inverter not ramping.

First step

Is it ALL zones weak, or a SINGLE zone?

A single zone

All zones

This is a preview of the first step. Run the full interactive diagnostic free — it walks you all the way to the likely root cause.