Close Control Regulation Program
56 06MC0071@00B0110
01/10/2012
AFPS SENSOR ALARMS
Alarms relating to the AFPS system.
Active in the event of a fault on the under floor sensor, with the
evaporator fan activated at maximum speed.
Active when, after the threshold and the alarm activation delay time set
have been exceeded, there is low under floor air pressure, with the
evaporator fan activated at maximum speed.
Active on a loss in communication between the UpCO1 control board
and the UpCOE expansion board in the AFPS system
ELECTRONIC EXPANSION VALVE ALARMS (DX,TC,ES units only)
These are alarms which are connected to the driver of the EVD400 electronic expansion valve, causing the
compressor/s to switch off.
Activated when there is low evaporation pressure, or rather, when the
LOP is lower than the threshold which has been set, for a period which
is longer than the Alarms Delay LOP. Also specifies the number of the
circuit.
Activated when there is excessive evaporation pressure, or rather,
when the MOP is higher than the threshold which has been set, for a
period longer than the Alarms Delay MOP. Also specifies the number
of the circuit.
Activated following an error in the signal given by the low pressure
ratiometric pressure transducer or a lack of working pressure caused
by the compressors not being switched on.
