Pfannenberg DTT 6101 Serie Manual De Instrucciones página 89

GB
4.6 Error messages
The error numbers are not displayed for units with standard controllers. Multicontroller (MC) display the error
numbers in LCD display. 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):
•
Heater (external):
•
Fault signal contact:
•
Er01 LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Heater (external):
•
Fault signal contact:
•
Er04 LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Heater (external):
•
Fault signal contact:
•
Er05 LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
External heating:
•
Fault signal contact:
Operating Manual DTT 6101 / 6201 Multicontroller (MC) 086100023a © Pfannenberg GmbH
Unit activity Possible causes
 Door contact:
Blinking
 The door contact loop has
OFF
OFF
been interrupted.
OFF
OFF
Closed
 Pressostat tripped:
Blinking
 Excessively high pressure
OFF
ON
has built up in the
refrigerant circuit. The
ON
cooling unit cannot
dissipate the heat from the
OFF
refrigerant circuit.
Open
 Phase sequence / phase
Blinking
OFF
loss:
 Failure of at least one
OFF
phase or phase sequence
OFF
is incorrect (only with
alternating current units
OFF
with rotating piston
Open
compressors).
 Sensor 1 (TS1) defect.
Blinking
ON
ON
ON
OFF
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).

Check condenser fan
(external) for function.
 Check the field of
rotation - (clockwise
rotation is required).
 All phases must carry
rated voltage.
 Replace Sensor 1 or the
controller circuit board
according to the unit
type.
 Replace controller circuit
board if the sensor is
soldered in place.
Page 39 / 50