What it means
The connected dryer has reported an overload condition.
This entry is tied to the exact STS message family documented by Sullair. The same words can mean something different on another controller generation, so confirm the displayed message and machine documentation before acting.
Likely causes
- Dryer overload protection has operated
Operator-safe first checks
- Record any dryer-side code or overload indicator.
- Do not repeatedly reset a dryer overload without finding the cause.
Trained maintenance / service checks
- Follow the dryer manufacturer troubleshooting procedure for the overload.
- Inspect electrical load, cooling and related dryer conditions per the dryer manual.
Reset or keep running?
Do not use repeated resets as a substitute for diagnosis. If the condition involves electrical power, a motor overload, high pressure, loss of cooling, abnormal temperature, or a safety circuit, correct the underlying problem before returning the compressor to service.
Source confidence
OEM VERIFIED
This message and its troubleshooting direction are traced to the Sullair STS controller troubleshooting guide.
Source: Sullair STS Controller User Manual, part 02250241-178 R01. Referenced manual page: 30.