Sensor Alarms/Errors - Danfoss EKE 1A User Manual

Superheat controller, Type EKE 1A, 1B, 1C, 1D
Label Alarm description Actions during ac‐
tive
E107 SH min higher than Auto operation
SH max blocked
E108 OD min higher than Auto operation
OD max blocked
E109 No transmitter con- Auto operation
figured for Pc blocked
E125 Al5 can't operate Auto operation
with AKS sensor blocked
E132 No sensor config- Auto operation
ured for S2 blocked
E133 No transmitter con- Auto operation
figured for Pe blocked
E134 Ext. ref. configura-
tion error

8.1.2 Sensor alarms/errors

Table 56: Sensor alarms/errors
Label Alarm description Actions during ac‐
tive
E024 S2 suction pipe sen- Alarm if backup sig-
sor error nal is found, error if
no backup possible,
emergency cooling
E025 S3 media inlet sen- Alarm if backup sig-
sor error nal is found, error if
no backup possible,
emergency cooling
E026 S4 media outlet sen- Alarm if backup sig-
sor error nal is found, error if
no backup possible,
emergency cooling
E020 Pe evaporator trans- Alarm if backup sig-
mitter error nal is found, error if
no backup possible,
emergency cooling
E121 Pc condenser trans- Alarm if backup sig-
mitter error nal is found, error if
no backup possible
A982 Thermostatic signal Emergency Cooling
missing thermostat
A981 SH control signal Emergency cooling
missing SH control
E019 External reference
signal alarm
A999 Dl1 unstable input DI is set to off
A998 DI2 unstable input DI2 is set to off
A983 DI3 unstable input DI3 is set to off
E102 Sensor supply over- Bios make power
load state on the actual
supply, automatic
operation blocked
E123 Low supply voltage Operation is
blocked (main
switch is set to off;
stepper is not op-
erational)
© Danfoss | Climate Solutions | 2022.06
Trigger (how the alarm IS How to clear the alarm
raised)
SH max lower than SH low Adjust SH max or SH low, SH
Max >=SH low
OD max lower than OD low Adjust OD max or OD low, OD
Max >=0D low
Application needs PC signal for Disable High condensing tem-
high condensing temperature perature protection or config-
protection ure PC transmitter
ON EKE 1C AI5 configuration is Set AI5 configuration to the of
setup as AKS sensor NTC1OK type
S2 Sensor configuration = Not
defined
Pe transmitter configuration =
Not defined
Correct setting
Trigger (how the alarm IS How to clear the alarm
raised)
Local sensor problem local sen- Get the local sensor inside sig-
sor outside range + hysteresis nal range
If S3 is used: local sensor prob- S3 not used or get the local
lem local sensor outside range sensor inside signal range
+ hysteresis
If S4 is used: local sensor prob- S4 not used or get the local
lem local sensor outside range sensor inside signal range
+ hysteresis
Local sensor problem local sen- Get the local sensor inside sig-
sor outside range + hysteresis nal range
Local sensor problem local sen- Pc not used or get the local sen-
sor outside range + hysteresis sor inside signal range
If thermostat is used and S3 or Get valid signal on S3 or S4
S4 signal missing (depending
on sensor select
Pe or S2 signal missing Get valid signal on Pe and S2
External reference out of range get external signal inside range External offset/reference signal is out of
+ hysteresis
DI is unstable, loose connection DI has stable low or high signal,
more than 10 transition per mi- below 6 transitions per minute
nute
DI2 is unstable, loose connec- DI2 has stable low or high sig-
tion more than 10 transitions nal, below 6 transitions per mi-
per minute nute
DI3 is unstable, loose connec- DI3 has stable low or high sig-
tion more than 10 transitions nal, below 6 transitions per mi-
per minute nute
Too much current draw on +5V +5V below 50mA and +15V be-
150mA+ or +15V (200mA+) low 30mA
Stepper voltage below 16V Stepper voltage above 16V
Remark
NO10 SH min. is set higher than N009 SH
max.
1066 Minimum OD is set higher than NO32
Maximum OD
Operation is configured to use Pc transmit-
ter. but no Pc transmitter is configured.
Correct I022 Al4 configuration and check
I044 Pc transmitter configuration
EKE 1C don't support AKS sensor on AI5.
Please use a temperature sensor on NTC
type on AI5. Correct, I022 AI5 configura-
tion
No sensor type defined for S2
No pressure transmitter type defined for
Pe
Check the ext. ref. signal and the ext. ref.
configuration.
Remark
S2 suction pipe sensor signal is found to
be out of out of range, please check con-
nection and I040 S2 sensor configuration
S3 media inlet sensor signal is found to be
out of out of range, please check connec-
tion and I041 S3 sensor configuration
S4 media outlet sensor signal is found to
be out of out of range, please check con-
nection and I042 S4 sensor configuration
Pe evaporator transmitter signal is found
to be out of out of range, please check
connection and I043 Pe transmitter config-
uration
Pc transmitter signal is found to be out of
out of range, please check connection and
I044 Pc transmitter configuration
Signal for thermostat is missing due to
sensor errors, check S3 or S4
Signal for superheat calculation is missing,
check S2 and Pe
range, please check connection and 0010
Ext ref configuration and relevant
high/low settings
DI1 is found be unstable (many on/off
within a Short time). Dl1 is set off until sta-
ble value is present. Check connection
DI2 is found be unstable (many on/off
within a Short time). DI2 is set off until sta-
ble value is present. Check connection
DI3 is found be unstable (many on/ off
within a Short time). DI3 is set off until sta-
ble value is present. Check connection
Sensor supply is overloaded. The output is
set off until the load is reduced, Check for
Short to COM
Supply voltage is found to be lower than
expected tolerance
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