Alarms
When the unit is not operating properly, the microprocessor records the alarm code, alerts the operator by displaying the Alarm symbol and, depending on the type of alarm, shuts the unit down.
There are three alarm categories:
Manual Start
The alarm stops the unit, and only the Alarm symbol appears on screen.
Once the alarm condition has been rectified, the On/Off key must be pressed to start up again.
Press and release the Select key to display the current alarm code on screen. If there is more than one active alarm, all the alarm codes on the unit can be viewed in sequence by pressing and releasing the Select key.
Auto Start
The alarm stops the unit, the Alarm symbol appears on screen and the unit starts up automatically once the alarm condition has been rectified.
Should a P1E alarm occur (return air temperature read error alarm code) appear, --- will appear on screen together with the alarm symbol, instead of the return air temperature reading.
If it is a multi-temperature unit, the --- will appear on the screen together with the alarm symbol, instead of the main compartment return air temperature reading.
In multi-temperature units, should a P2E - return air temperature read error in the remote compartment alarm code - appear, --- will also appear on screen together with the alarm symbol, instead of the remote compartment return air temperature reading.
Press and release the Select key to display the current alarm code on screen. If there is more than one active alarm, all the alarm codes on the unit can be viewed in sequence by pressing and releasing the Select key.
Buzzers
The buzzers are energized when the vehicle battery and the electrical supply are connected simultaneously (the unit continues running in Standby mode). The buzzers are also energized if the doors open, if this option is selected.