Pfannenberg DTT 6801 Series User Manual

Operating Manual DTT 6801 Multicontroller (MC) 086100037 © Pfannenberg GmbH Page 38 / 49
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
no.
Fault
Unit activity
Possible causes
Corrective measures
Er00
• LED:
• Compressor:
• Evaporator fan
(internal):
• Condenser fan
(external):
• Heater (external):
• Fault signal contact:
Blinking
OFF
OFF
OFF
OFF
Closed
 Door contact:
 The door contact loop has
been interrupted.
 Close door.
 Connect door contact
switch.
 Bypass door contact.
 Check wiring.
Er01
• LED:
• Compressor:
• Evaporator fan
(internal):
• Condenser fan
(external):
• Heater (external):
• Fault signal contact:
Blinking
OFF
ON
ON
OFF
Open
 Pressostat tripped:
 Excessively high pressure
has built up in the
refrigerant circuit. The
cooling unit cannot
dissipate the heat from the
refrigerant circuit.
 Allow the unit to cool
down.
 Clean the heat
exchanger fins
(internal/external).
 Check condenser fan
(external) for function.
Er04
• LED:
• Compressor:
• Evaporator fan
(internal):
• Condenser fan
(external):
• Heater (external):
• Fault signal contact:
Blinking
OFF
OFF
OFF
OFF
Open
 Phase sequence / phase
loss:
 Failure of at least one
phase or phase sequence
is incorrect (only with
alternating current units
with rotating piston
compressors).
 Check the field of
rotation - (clockwise
rotation is required).
 All phases must carry
rated voltage.
Er05
• LED:
• Compressor:
• Evaporator fan
(internal):
• Condenser fan
(external):
• External heating:
• Fault signal contact:
Blinking
ON
ON
ON
OFF
Open
 Sensor 1 (TS1) defect.
 Replace Sensor 1 or the
controller circuit board
according to the unit
type.
 Replace controller circuit
board if the sensor is
soldered in place.

Pfannenberg DTT 6801 Series Specifications

General

Brand	Pfannenberg
Model	DTT 6801 Series
Category	Controller
Language	English