GB
Error messages
Error
Fault
no.
•
Er06
LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Heater (external):
•
Fault signal contact:
•
Er07
LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Heater (external):
•
Fault signal contact:
•
Er08
LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Heater (external):
•
Fault signal contact:
Operating Manual DTT 6101 / 6201 Multicontroller (MC) 086100023a © Pfannenberg GmbH
Unit activity
Possible causes
Sensor 1 Minimum:
Blinking
Minimum switch cabinet
OFF
ON
temperature value "Lit_"
(LCD display)
ON
is reached or exceeded.
OFF
Open
Sensor 1 Maximum:
Blinking
The maximum value of the
ON
ON
switch cabinet
temperature "Lit¯" (LCD
ON
display) has been reached
or exceeded.
The cooling unit cannot
OFF
Open
sufficiently cool the air in
the switch cabinet.
Sensor 2 (TS2) defect.
Blinking
ON
ON
ON
OFF
Open
Corrective measures
Select higher switch
cabinet-
Select temperature
setpoint.
Inspect the switch
cabinet for leaks.
Move components near
the air intake and outlet
further away in order to
prevent an air short
circuit. (The cold air is
diverted directly to the air
inlet by components.)
Check the settings of the
cooling unit.
Clean the heat
exchanger fins
(internal/external).
Evaporator fan
check (internally) for
function.
Check the refrigeration
circuit for escaping
refrigerant or leaks.
If necessary, install a
cooling unit with a higher
cooling capacity.
Replace Sensor 2 or the
controller circuit board
according to the unit
type.
Sensor 2 is plugged into
the circuit board, not
permanently soldered in
place.
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