GB
085408064e
After each service, the full performance capacity of the condensate
run-off should be checked.
12 Stopping
If the cooling unit is not in use for a longer period, disconnect it.
Ensure that unauthorised persons cannot start the cooling unit.
IWhen the cooling unit is no longer needed, it must be disposed of
by authorized specialist personnel in accordance with all applicable
environmental protection regulations. (see also Section 4, Gene-
13.1 General errors
- No message via the service indicator
ral Information)
It is essential that the refrigerant in the cooling system is properly
removed by suction. Refrigerant emissions must be prevented.
12.1 Disposal
www.pfannenberg.com/disposal.
13 What to do if ...
... in spite of your care and attention a fault occurs?
Check the following points first. If the fault is not then cleared, call
an authorized specialist.
Unit fails to cool, fan in an
internal airflow circuit is running
Temperature setting too high
Check temperature setting.
Unit fails to cool cufficiently.
Thresholdvalues for usage exceeded.
Lack of coolant
Heat exchanger contaminated.
Fan in internal airflow circuit faulty. Fan in
external airflow circuit faulty.
Air not circulationg properly inside the switch
cabinet
Check ambient temperature and internal load.
Call authorized specialist, check unit for leaks
Clean heat exchanger.
Call authorized specialist, replace fan.
Check assemblies and air circulation inside
switch cabinet. Air intake and eexhaust into/
from cooling unit into switch cabinet must be
inimpeded.
Unit only cools irregularly
Coding switch incorrectly set or defective.
Check coding switch and cable connections.
Condensate accumulates in
switch cabinet
Blow-out temperature too low
Switch cabinet not sufficiently sealedt.
Set higher temperature at thermostat..
Close switch cabinet door.
Remedy leakage at switch cabinet.
Condensate fails to drain
Condensate drainage clogged.
Clean condensate drainage. Condensate
drainage hose must be inclined downward
without showing a bend.
13.2 Fault diagnosis
- Message via the service indicator
If a fault occurs in the cooling unit, the status indicator goes over to flashing mode which in conjunction with the unit characteristics is to
make initial fault diagnosis easier.
Flashing sequences in the fault mode can be:
Status indicator, flashing sequence 1: (5s, 1s, 1s, 1s) with periodic repetition
(User error)
Status indicator, flashing sequence 2: (1s, 1s) with periodic repetition
(Unit fault)
Status indicator, flashing sequence 3: (1s, 1s, 1s, 1s) with periodic repetition
(Test/start-up mode)
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