What does a shutdown warning mean on an Atlas Copco Elektronikon Mk 5?
Short answer: Mk 5 shutdown warning. If your Atlas Copco GA series (Elektronikon Mk 5) is showing Shutdown warning / dew point warning, the controller has logged a specific, documented condition. This page covers what it means, what causes it, what you can safely fix yourself, and when — and why — it takes a technician.
What exactly is the machine telling you?
A monitored value passed the programmable shutdown-warning level below the shutdown level — a message appears and the general alarm LED lights while the unit keeps running. On units with integrated dryer, the same warning appears if the dew point temperature is too high relative to ambient.
Which machines show this?
Atlas Copco GA-series rotary screw compressors fitted with the Elektronikon Mk 5 controller — the graphic-display generation that replaced the Elektronikon II era units. The Mk 5 shows shutdowns and shutdown warnings as on-screen messages with the measured value and the programmed level, lights a general alarm LED for warnings, and clears alarms through a confirm button under a reset icon. Warnings disappear on their own once the condition resolves; shutdowns latch until the problem is fixed and reset. Practical tip: the manual is blunt that repeatedly resetting a shutdown without remedying the cause can damage the machine — write down the tripped value first, fix, then reset once.
What causes it?
- A monitored value drifting toward its shutdown level — commonly temperature from poor cooling airflow, hot ambient, low oil, or dirty coolers
- On dryer-equipped units, dew point running high relative to ambient
- A developing fault that will become a hard trip if ignored
Can you fix it yourself?
Usually, yes — this is the machine asking for basic housekeeping: cooling air path, oil level, cooler and condenser cleaning. Fix it now and you avoid the shutdown.
Step by step — what to try, in order:
- Identify which signal is in warning on the display
- For temperature: check cooling air path, ambient temperature, oil level and cooler cleanliness
- For dew point: check dryer ventilation and condenser cleanliness
- The message disappears when the condition resolves; otherwise reset only after fixing the cause
When do you need a technician — and why?
If the warning recurs or keeps trending up after those checks, something internal (thermostatic valve, dryer circuit, sensor) is drifting, and that diagnosis needs service instruments.
If it does come to a service call and you're in Nashville, TN or Birmingham, AL, we maintain independently compiled lists of local companies that service industrial air compressors — real businesses with verified contact information, none of whom paid to be listed.
Related questions
What does Shutdown warning / dew point warning mean on an Atlas Copco GA series (Elektronikon Mk 5)?
Mk 5 shutdown warning. A monitored value passed the programmable shutdown-warning level below the shutdown level — a message appears and the general alarm LED lights while the unit keeps running. On units with integrated dryer, the same warning appears if the dew point temperature is too high relative to ambient.
Can I fix Shutdown warning / dew point warning on an Atlas Copco GA series (Elektronikon Mk 5) myself?
Usually, yes — this is the machine asking for basic housekeeping: cooling air path, oil level, cooler and condenser cleaning. Fix it now and you avoid the shutdown.
When does Shutdown warning / dew point warning on an Atlas Copco GA series (Elektronikon Mk 5) need a technician?
If the warning recurs or keeps trending up after those checks, something internal (thermostatic valve, dryer circuit, sensor) is drifting, and that diagnosis needs service instruments. If the warning recurs or trends toward the shutdown level despite basic checks, book a service visit before you get a hard shutdown.
Verified against service documentation: Atlas Copco GA series (Elektronikon Mk 5) documentation for Shutdown warning / dew point warning (manualslib.com)