765042402 Rev. 000 37
Adjusting the difference between temperature set point and hAL / LAL alarm settings to
narrow, will result in unintended alarms. A narrow gab combined with a too short dAh could
result in an AH alarm, just by opening the door.
dAh should never be adjusted to less than 30 minutes.
To access the temperature alarm parameters, push and hold and simultaneously for
5 seconds. The display will flash the first temperature alarm parameter hAL.
To access the individual parameters push .
To move between and adjust the parameters use and .
Push to store the new setting. The controller automatically jumps to the next parameter.
Adjustable parameters are:
Factory default
hAL High Alarm Limit + 25° C
LAL Low Alarm Limit - 29° C
dAh Time delay Alarm high 120 minutes
dAL Time delay Alarm Low 20 minutes
Atd Alarm temperature differential 2K
The above parameter settings will result in the following:
To trigger a high temperature alarm (Ah) the cabinet temperature must be above hAL =
25°C for more than dAh = 120 minutes. This will result in being lit and the display
alternating between Ah and the present cabinet temperature.
Once the temperature goes below 23°C (hAL – Atd) the alarm changes from present to
being logged. The display will show current temperature and will remain lit indicating
there has been a temperature alarm.
To trigger a Low temperature alarm (AL) the cabinet temperature must be below LAL = -
29°C for more than dAL = 20 minutes. This will result in being lit and the display
alternating between AL and the present cabinet temperature.
Once the temperature goes above -27°C (LAL + Atd) the alarm changes from present to
being logged. The display will show current temperature and will remain lit indicating
there has been a temperature alarm.
The following temperature alarms can be displayed:
Ah Alarm high temperature
AL Alarm Low temperature
If an alarm occur, Ah or AL will be shown alternating with the current temperature.
If the temperature gets back within the accepted limits, the current temperature will be
shown in the display and will remain lit until the alarm has been reset. After 3 days will
be turned off, but the alarm will still be kept in the alarm log.
Displaying alarms:
The temperature alarm log stores information related to the latest 10 temperature alarms
(named A 1 to A10). If a new alarm occurs the oldest alarm (A10) will be erased.
Push once to open the log.
• If there is no present or logged temperature alarm the display will show “no” flashing
for 4 seconds. After that the controller will revert to normal operation.
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