Product Manual

Remedy the trouble and reset the message. See also section Inputs menu.
Before remedying, consult the applicable safety precautions.
Shutdown warning / shutdown
If the compressor element temperature exceeds the factory set warning level, the compressor
element will be stopped for a short time and a warning will appear on the controller display (1)
and the general alarm LED (2) will light up.
In case of repetitive stops due to a too high temperature, a manual reset will be necessary before
restarting the compressor.
The compressor will also be stopped when the motor is overloaded.
A warning message will also appear if, on compressors with integrated dryer, the dew point
temperature is too high in relation to the ambient temperature.
Service warning
A number of service operations are grouped (called Service Plans). Each Service Plan has a
programmed time interval. If a time interval is exceeded, a message will appear on display (1) to
warn the operator to carry out the service actions belonging to that Service Plan.
The running hours will be recalculated with respect to the ambient temperature. This algorithm is
activated when the compressor is operated above 30 °C (86 °F) ambient.
Automatic restart after voltage failure
The controller has a built-in function to automatically restart the compressor when the voltage is
restored after voltage failure. For compressors leaving the factory, this function is made inactive.
If desired, the function can be activated.
Consult the Atlas Copco Customer Centre if a change is considered (password protected
function).
If the function is activated and provided the regulator was in the automatic operation
mode, the compressor will automatically restart if the supply voltage to the module is
restored within the programmed time interval.
Instruction book
2920 7140 52 25