Emerson EC3-X32 Mode D'emploi page 4

E r r o r / A l a r m h a n d l i n g :
Alarm
Description
code
Pressure transmitter
E0
error
Temperature sensor
E1
error
EXV electrical
AΠ
connection error
Ab
Ab
Battery error
Ab blinking
Pump down action
AE blinking cannot
accomplished
AF
Freeze protection
AF blinking
AL
Low superheat
AL
(<0,5K)
blinking
High superheat
AH
AP
Low pressure
AP blinking
Data error display -
Er
out of range
--- No data to display
Note: When multiple alarms occur, the highest priority alarm is displayed until being cleared, then the next highest alarm is displayed until all alarms are cleared. Only then
will parameters be shown again.
C h e c k i n g s y s t e m o p e r a t i n g c o n d i t i o n s u s i n g l o c a l d i s p l a y / ke y p a d E C D - 0 0 2 :
The data to be permanently shown on the display can be selected by the user (parameter ┌┘1). It is possible to temporarily display these values. However this function is
not available in an alarm condition. The display will show for one second the numerical identifier of the data (see ┌┘1 parameter) and then the selected data. After 5 minutes,
the display will return to the value selected by parameter ┌┘1.
S e r v i c e / T r o u b l e s h o o t i n g :
Symptom
Operating superheat is several degrees higher or lower than
set-point
Operating superheat is too low i.e. compressor wet running 1- Incorrect wiring of ECVs
Valve is not fully closed
Instable superheat (hunting)
Valve opens when EC3 commands to close and vice versa
EX8 is not able to open at high differential pressure
Superheat set-point is shifting after several months of
uninterrupted operation or permanent jumper of 24 V
digital input
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
EC3-X32 Superheat Controller with TCP/IP
communication capability
Related Alarm
Valve
parameter relay
- Signaling Fully close Check wiring connection and measure the signal 4...20 mA.
- Signaling Fully close Check wiring connection and measure the resistance of sensor.
- Signaling
Regulating Battery potentially does not have enough charge to close valve in
b1: 1 -
b1: 2 Signaling Fully close
b1: 3 Signaling Fully close
P6: 1 Signaling
P4: 1 Signaling Fully close Check the system for cause of low pressure such as insufficient
P4: 2 Signaling Fully close
uL: 1 Signaling Fully close
uL: 2 Signaling Fully close
uH: 1 Signaling Fully close Check the system.
P9: 1 Signaling Fully close Check the system for cause of low pressure such as refrigerant
P9: 2 Signaling Fully close
- -
- -
Incorrect signal from pressure or
temperature sensors
2- Defective sensors
1- The digital input is ON (24 V)
2- Wrong setting of parameter ut.
Evaporator is designed to operate at
higher superheat
Wrong wiring between EC3-X3...
and valve
Wrong setting of parameter ut
Stepper motor driven valves require
synchronization
www.emersonclimate.eu
Operating instruction
- Check wiring connection and measure the resistance of winding.
case of main power supply interruption. May occur temporarily
with new controllers or after long storage but should disappear
when battery is charged sufficiently. If Ab remains active even
when battery is charged, battery may be defective and should be
replaced. (Replacement kit: 807 790).
Allocate the source, which does not let suction pressure drops
-
below desired set-point.
load on evaporator.
Check wiring connection and operation of valve.
loss.
Data send to the display is out of range. Check temperature and
-
pressure sensor.
Check Cable and plug connection between EC3-X... and
-
ECD-002.
Cause
1- Check the sensors.
2- Make sure ECN-N60 temperature sensor is used.
3- For optimum accuracy, please use:
4- Make sure the sensor cables are not installed along with other
1- Check the wiring
2- Check the sensor
1- Valve is shut off only when the digital input is turned off (0 V).
2- Check the setting of parameter ut.
Increase the superheat set-point.
Correct the wiring.
Check the parameter ut. (Larger valve requires higher torque and
higher current)
Do not apply permanent 24 V digital input. Interrupt digital input
once every week for 5 seconds if compressor never stops.
Date: 03.04.2017
What to do?
Action
PT5-07x (for R22 / R134a / R507 / R404A / R407A / R407C /
R407F / R124 / R448A /R449A / R450A / R513A /
R1234ze)
PT5-18x (for R410A/ R32)
PT5-30x (for R410A / R744 / R32)
PT5-50x (for R744)
high voltage cables
EC3-X32_OI_ML_R13_865008.docx
Requires manual
reset after resolving
alarm
No
No
No
-
-
Yes
Yes
No
Yes
No
Yes
No
No
Yes
No
No