Carel ?C2SE

61
ENGLISH
µC
2
SE - +030220426 - rel. 2.1 - 09.06.2010
D1: defrost signal circuit 1
When the defrost is on circuit 1, the display shows the message D1.
D2: defrost signal circuit 2
When the defrost is on circuit 2, the display shows the message D2.
Fd: dirty  lter warning
This warning is only shown if the temperature di erence between the exchanger inlet and outlet
is higher than parameter A12.
Driver
All the driver alarms on the µC
2
SE that stop the unit feature automatic reset. Consequently, the
possibility to select the automatic resetting of the entire system must be selected for the drivers
by setting the corresponding parameters. The µC
2
SE can send the Go Ahead command according
to the normal procedure for resetting the alarms from the keypad.
Ed1: tLan communication error with Driver 1
The alarm is generated after a  xed time (5 s) from when the µC
2
SE loses contact with Driver 1. In
this case, circuit 1 is disabled for safety reasons.
Ed2: tLan communication error with Driver 2 (expansion card)
As for Ed1, but relating to driver 2.
SH1: low superheat alarm circuit 1
The low superheat alarm for circuit 1, after a  xed time (5 s), inhibits the circuit 1 for safety reasons.
The risk is that the compressors will  ood.
SH2: low superheat alarm circuit 2
As for SH1, but relating to driver 2
nO1: MOP warning (maximum operating pressure) circuit 1
The warning appears on the display and, if the expansion card is  tted, the corresponding relay is
activated.
nO2: MOP warning (maximum operating pressure) circuit 2
The warning appears on the display and, if the expansion card is  tted, the corresponding relay is
activated.
LO1: LOP warning (lowest operating pressure) circuit
The warning appears on the display and, if the expansion card is  tted, the corresponding relay is
activated.
LO2: LOP warning (lowest operating pressure) circuit 2
As for LO1, but relating to driver 2
HA1: high evaporator temperature warning circuit 1
The warning appears on the display and, if the expansion card is  tted, the corresponding relay is
activated.
HA2: high evaporator temperature warning circuit 2
As for HA1, but relating to driver 2.
EP1: EEPROM error driver 1
The circuit 1 is disabled for safety reasons, as the status of Driver 1 is not known.
EP2: EEPROM error driver 2
As for EP1, but relating to driver 2.
ES1: probe error driver 1
The circuit 1 is disabled for safety reasons, as the status of Driver 1 is not known.
ES2: probe error driver 2
As for ES1, but relating to driver 2.
EU1: EVD 1 error, valve open when starting
If when starting the system the Driver detects that the valve is still open, an alarm is sent to the
µC
2
SE that stops the compressors and the fans in the corresponding circuit.
EU2: EVD 2 error, valve open when starting
As for EU1, but relating to EVD 2.
Eb1: EVD 1 battery alarm
The EVD 1 battery alarm stops the compressors from starting so as to prevent the risk of liquid
returning to circuit 1, and disables the corresponding fans.
Eb2: EVD 2 battery alarm
The EVD 2 battery alarm stops the compressors from starting so as to avoid the risk of liquid
returning to circuit 2, and disables the corresponding fans.