Elstat ems100 nexo - Temperature Sensor Alarms; Appliance Sensor Failure

ems100 Product Manual, Issue 4
www.nexo.com
Page 41
4.5 Temperature sensor alarms
Sensor faults may also be identied by using the input test within the test routines (tSt).
Elstat controllers manage sensor failures as follows:
` PF1 alarms: The controller will enter PF1 limp home mode.
` PF2 alarms: The controller will continue running the compressor. The display alternates
between PF2 and the appliance sensor temperature indicating a fault.
Performthe
analoguesensor
test
No
Aresensors
securelyfitted?
Iseithersensor
opencircuit?
Yes
Replace
controller
No
Replace
faulty
sensor
Yes
Secureloosesensor
Alarmcleared?
Fault
cleared
Yes
No
4.6 Appliance sensor failure
The limp home aspect of this alarm ensures that the cooler continues to operate with limited disruption to
the end user. The cooler will operate, cooling the products, while a service engineer visit is scheduled. The
table below describes how the ems100 Nexo controls the cooler during this time and what the end user will
see:
Audio alarm Display
Audible alarm sounds ve times every compressor cycle (compressor switches ON or
OFF) - if the buzzer is enabled.