Pfannenberg DTT 6201 Serie Instrucciones De Servicio página 150

ENG
Error no. Fault/unit behavior
LED:

Compressor:
Evaporator fan (internal):
Condenser fan (external):
Heating (external):
Fault signal contact::
LED:

Compressor:
Evaporator fan (internal):
Condenser fan (external):
Heating (external):
Fault signal contact::
LED:

Compressor:
Evaporator fan (internal):
Condenser fan (external):
Heating (external):
Fault signal contact::
Tab. 13: Possible error messages (continued)
Operating Manual | Roof-mounted Cooling Unit | Multi Controller (MC) – 400 V, 2~ | 086100031c
Possible causes
flashes Sensor 1 Minimum:
Minimum value of the switch
OFF
cabinet temperature " it¯"
ON
(display) is reached or
exceeded.
ON
OFF
Open
flashes Sensor 1 Maximum:
Maximum value of the switch
ON
cabinet temperature " it¯"
ON (display) is reached or
exceeded.
ON
The cooling unit cannot cool
OFF
the air in the switch cabinet
sufficiently.
Open
Sensor 2 (TS2) defective.
flashes
ON
ON
ON
OFF
Open
Remedial measures
Select a higher switch cabinet
temperature setpoint.
Check switch cabinet for
leakages.
Move components located in
the vicinity of the air inlet and
air outlet further away to
prevent an air short-circuit.
(The cold air is deflected
directly to the air inlet by
components.)
Check settings of the cooling
unit.
Clean the fins of the heat
exchanger (internal/external).
Check the function of the
evaporator fan (external).
Check the refrigeration circuit
for spilled refrigerant or
leakage.
Install a cooling unit with a
higher cooling capacity if
necessary.
Replace sensor 2 according
to the unit type.
Sensor 2 is plugged to the
card, not permanently
soldered.
70/80