Pfannenberg DTT 6401 Serie Instrucciones De Servicio página 76

GB
Error messages
Error Fault
no.
•
Er07 LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Fault signal contact:
•
Er08 LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Fault signal contact:
•
Er15 LED:
•
Compressor:
•
Evaporator fan
(internal):
•
Condenser fan
(external):
•
Fault signal contact:
Operating Manual DTT 6401 Standard Controller (SC) 086100036 © Pfannenberg GmbH
Unit activity Possible causes
•
Blinking Sensor 1 Maximum:
ON The maximum value of the
switch cabinet temperature
ON "Lit¯" (display) has been
reached or exceeded.
ON The cooling unit cannot
Open sufficiently cool the air in
the switch cabinet.
•
Blinking Sensor 2 (TS2) defect.
ON
ON
ON
Open
•
Blinking Antifreeze (optional):
Antifreeze sensor ≤ 1°C.
OFF
Safety shut-off, because
OFF there is a risk of icing of the
compressor.
OFF
Open
Corrective measures
 Check the settings of the
cooling unit.
 Clean the heat
exchanger fins
(internal/external).
 Evaporator-
Check fan (internal) 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
according to the unit
type.
 Sensor 2 is plugged into
the circuit board, not
permanently soldered in
place.
 Restart after
accumulating
condensate water has
evaporated.
 A restart is only possible
with disconnection and
re-connection of the
mains voltage.
 For safety reasons, no
other means of resetting
is provided.
 Clean the heat
exchanger fins
(internal/external).
Inspect the switch
cabinet for leaks.
 Select higher switch
cabinet-
Select temperature
setpoint.
 Evaporator function-
Check fan (internal).
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