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Operating Manual | Attachment and Installation Cooling Units | Multi Controller (MC) – 400 / 460 V, 3~ | 086100124 65/76
7.1.1 Error messages
The error numbers are not displayed in units with Standard Controllers. Using the ECoolPLANT software, it is possible to read
out the error numbers on the computer.
Flashing of the red LED light on the controller card is not a fault indication or error message.
The red LED light indicates that the cooling unit is carrying voltage.
Error no. Fault/unit behavior Possible causes Remedial measures
LED: flashes Door contact:
The door contact circuit is
interrupted.
Close the door.
Connect the door contact
switch.
Bridge the door contact.
Check wiring.
Compressor: OFF
Evaporator fan (internal): OFF
Condenser fan (external): OFF
Heating (external): OFF
Fault signal contact:: closed
LED: flashes Pressostat tripped:
Too high pressure in the
refrigeration circuit.
The cooling unit cannot
dissipate the heat from the
refrigeration circuit.
Let the unit cool down.
Clean the fins of the heat
exchanger (internal/external).
Check the function of the
condenser fan (external).
Compressor: OFF
Evaporator fan (internal): ON
Condenser fan (external): OFF
Heating (external): OFF
Fault signal contact:: Open
LED: flashes Phase sequence/phase
failure:
Failure of at least one phase
or phase sequence is wrong
(only in three-phase units with
cam compressors).
Check field of rotation - (right-
hand field of rotation is
mandatory).
All phases must carry rated
voltage.
Compressor: OFF
Evaporator fan (internal): OFF
Condenser fan (external): OFF
Heating (external): OFF
Fault signal contact:: Open
LED: flashes Sensor 1 (TS1) defective. According to the unit type,
replace sensor 1
(permanently soldered on the
controller card) or the
complete controller card.
Compressor: ON
Evaporator fan (internal): ON
Condenser fan (external): ON
Heating (external): OFF
Fault signal contact:: Open
Tab. 19: Possible error messages
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