Error Messages - Pfannenberg DTT 6301 Serie Instructions D'utilisation

GB
4.4

Error messages

The error numbers are not displayed for units with standard controllers: With the ECoolPLANT software it is
possible to read the error numbers on the computer.
 The blinking of the red LED light on the controller circuit board is not a fault indicator or error message. The red
LED light indicates that voltage is supplied to the cooling unit.
Error Fault
no.
•
Er00 LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Fault signal contact:
•
Er01 LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Fault signal contact:
•
Er04 LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Fault signal contact:
•
Er05 LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Fault signal contact:
Operating Manual DTT 6301 Standard Controller (SC) 086100026 © Pfannenberg GmbH
Unit activity Possible causes
 Door contact:
Blinking
 The door contact loop has
OFF
been interrupted.
OFF
OFF
Closed
 Pressostat tripped:
Blinking
 Excessively high pressure
OFF
has built up in the
ON
refrigerant circuit. The
cooling unit cannot
OFF
dissipate the heat from the
Open
refrigerant circuit.
 Phase sequence / phase
Blinking
OFF
loss:
 Failure of at least one phase
OFF
or phase sequence is
incorrect (only with
OFF
alternating current units
Open
with rotating piston
compressors).
 Sensor 1 (TS1) defect.
Blinking
ON
ON
ON
Open
Corrective measures
 Close door.
 Connect door contact
switch.
 Bypass door contact.
 Check wiring.
 Allow the unit to cool
down.
 Clean the heat
exchanger fins
(internal/external).
 Liquefier-
Check fan (external) for
function.
 Check the field of
rotation - (clockwise
rotation is required).
 All phases must carry
rated voltage.
 Replace Sensor 1
(permanently soldered
on the controller circuit
board) or the overall
controller circuit diagram
according to the unit
type.
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