Modification Of System(S) - Danfoss EFIT 850 Installation And User Manual

Installer Manual
Modification of system(s)
It is possible to modify the installed systems on the EFIT™ 850 . The following modifica-
tions are possible:
• Reactivate passive sensors
• Replace a malfunctioning sensor
• Add an extra sensor
When the EFIT™ 850 cannot communicate with a sensor, the EFIT™ 850 reports the
error: "Errors detected!" . The EFIT™ 850 does not rely on malfunctioning sensors, and
therefore the EFIT™ 850 makes the sensor passive . The passive sensor is no longer used
for ice and snow detection - not even after a power cycle .
If the malfunctioning is causes by problems with the wiring, the failure can be
fixed, and the sensor can be reactivated .
If the malfunctioning is caused by an error prone sensor, the error can be cor-
rected by replacing the error prone sensor with a new sensor .
It is not possible to delete a passive sensor in a system . Passive sensors will
remain in the systems until they are replaced with new sensors . The only way
to delete a passive sensor (other than replacing it), is to make a Master Reset
and reinstall the EFIT™ 850 (please refer to chapter: General use) .
Reactivate passive sensors:
The given example is for a ground system.
From the installer menu select Change system .
Press to activate Change system .
The system is searching for connected sensors .
If any passive sensors are found, they are reactivated .
Message is shown for 3 seconds .
If no new sensors are found, it is reported to the user .
Message is shown for 3 seconds .
22
Change system
Checking system
<------>
1 sensor(s)
reactivated!
No ground
sensors found!