Product Overview

© Danfoss | DCS | 2019.04
Data sheet | Superheat controller type EKE 1A, EKE 1B, EKE 1C
DKRCC.PD.RS0.A4.02 | 63
Label MODbus
PNU
Bit
No.
Alarm
Description
Actions during active Trigger (how the alarm
is raised)
How to clear the alarm Remark
SENSOR ALARMS / ERRORS
E024 1901 11 S2 suction pipe
sensor error
Alarm if backup signal is
found, error if no backup
possible, emergency
cooling
Local sensor problem
local sensor outside range
+ hyst
Get the local sensor
inside signal range
S2 suction pipe sensor signal is found
to be out of out of range, please
check connection and I040 S2 sensor
conguration
E025 1901 12 S3 media inlet
sensor error
Alarm if backup signal is
found, error if no backup
possible, emergency
cooling
If S3 is used: local sensor
problem local sensor
outside range + hyst
S3 not used or get the
local sensor inside signal
range
S3 media inlet sensor signal is found
to be out of out of range, please
check connection and I041 S3 sensor
conguration
E026 1901 13 S4 media outlet
sensor error
Alarm if backup signal is
found, error if no backup
possible, emergency
cooling
If S4 is used: local sensor
problem local sensor
outside range + hyst
S4 not used or get the
local sensor inside signal
range
S4 media outlet sensor signal is found
to be out of out of range, please
check connection and I042 S4 sensor
conguration
E020 1901 14 Pe evaporator
transmitter error
Alarm if backup signal is
found, error if no backup
possible, emergency
cooling
Local sensor problem
local sensor outside range
+ hyst
Get the local sensor
inside signal range
Pe evaporator transmitter signal is found
to be out of out of range, please check
connection and I043 Pe transmitter
conguration
E121 1901 15 Pc condenser
transmitter error
Alarm if backup signal is
found, error if no backup
possible
Local sensor problem
local sensor outside range
+ hyst
Pc not used or get the
local sensor inside signal
range
Pc transmitter signal is found to be out
of out of range, please check connection
and I044 Pc transmitter conguration
A982 1903 6 Thermostatic
signal missing
Emergency Cooling
thermostat
If thermostat is is used
and S3 or S4 signal
missing (depending on
sensor select
Get valid signal on S3
or S4
Signal for thermostat is missing due to
sensor errors, check S3 or S4
A981 1903 7 SH control signal
missing
Emergency cooling SH
control
Pe or S2 signal missing Get valid signal on Pe
and S2
Signal for superheat calculation is
missing, check S2 and Pe
E019 1901 0 External reference
signal alarm
External reference out of
range + hyst
get external signal inside
range
External oset/reference signal is out
of range, please check connection and
O010 Ext ref conguration and relevant
high/low settings
A999 1903 0 DI1 unstable
input
DI is set to o DI is unstable, loose
connection more than 10
transition per minute
DI has stable low or high
signal, below 6 transitions
per minute
DI 1 is found be unstable (many on/o
within a Short time). DI1 is set o until
stable value is present. Check connection
A998 1903 6 DI2 unstable
input
DI is set to o DI is unstable, loose
connection more than 10
transitions per minute
DI has stable low or high
signal, below 6 transitions
per minute
DI 2 is found be unstable (many on/o
within a Short time). DI2 is set o until
stable value is present. Check connection
A983 1903 7 DI3 unstable
input
DI is set to o DI is unstable, loose
connection more than 10
transitions per minute
DI has stable low or high
signal, below 6 transitions
per minute
DI 3 is found be unstable (many on/
o within a Short time). 3 is set o until
stable value is present. Check connection
E102 1901 10 Sensor supply
overload
Bios make power state
on the actual supply,
automatic operation
blocked
Too much current draw
on +5V 150mA+ or +15V
(200mA+)
+5V below 50mA and
+15V below 30mA
Sensor supply is overloaded. The output
is set o until the load is reduced, Check
for Short to COM
E123 1904 8 Low supply
voltage
Operation is blocked
(main switch is set
to o; stepper is not
operational)
Stepper voltage below
16V
Stepper voltage above
16V
Supply voltage is found to be lower than
expected tolerance