5 min · 5 steps
CO2 Standstill Pressure Rising
System off and pressure climbing toward relief — protect the charge.
First step
Is the standstill / auxiliary condensing unit running (or able to run) with the rack off?
No — standstill unit is down
Yes — it runs but pressure still climbs
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.