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12 Troubleshooting
Any trouble occurring might be due to a minor problem that you can correct yourself following the instructions be-
low. Do not try any further action if the pointers given cannot solve the problem!
Repairs on the case must be made only by qualified specialists. Incompetent repair work can cause
serious personal danger, contact your Service Organization for any repairs needed.
Trouble
Possible cause
Case does not
Automatic evaporator defrosting
work (no audible
active or thermostat switched off.
running noise or
Power plug not connected or remote
only fan noise
control switch (where provided)
audible).
switched off.
Fuse blown, power plug or socket
defective.
Condenser fins fouled.
Case Stopps run-
Condenser fins fouled.
ning after short
operation; fuse
blows.
Storage tempera-
Automatic evaporator defrosting
ture is too high.
active.
Ambient temperature too high or
thermostat misadjusted.
The warm air outlet of another case is
directly taken in as air intake.
Ventilation slots blocked or covered.
Lack of air intake due to obstruction
of air intake grille.
Condenser fins fouled.
Direct draughts disturb the refrigerating
system.
Storage tempera-
Misadjustment
ture is too low.
Handrail lighting
The handrail lighting has not been
does not light up.
switched on.
The lamp or starter is defective.
Heavy conden-
Extreme ambient temperature (e.g. rel.
sation on the
air humidity > 60 %, very high
glass surfaces.
summer temperatures).
Upper glass cover the wrong way
round.
Water under or in
Automatic defrosting defective or ext-
front of the case.
reme operating environment (e.g. rel.
air humidity > 60 %, very high summer
temperatures) causes overflow of drip
tray in machine compartment.
Formation of
Drip water gutter under base plate
odour in the case.
fouled.
52
Corrective measure
Not required, as cooling will switch on
automatically again.
-
Insert power plug properly in or
switch remote control switch on.
Contact your electrician or the
-
Service Organization.
Perform maintenance.
-
-
Perform maintenance.
Not required, temporary minor tempe-
rature rise during defrosting is normal.
-
Avoid extreme operating
environment, readjust storage
temperature.
-
Observe single-row line-up and
group installation
Keep ventilation slots free.
-
Remove any obstacles in the air
-
intake area.
Perform maintenance.
-
-
Close doors and windows in the
immediate vicinity.
-
Re-align the air-conditioning.
-
Adjust storage temperature in
small increments.
-
Switch handrail lighting on.
-
Replace lamp or starter.
-
Improve operating environment by
providing adequate cross
ventilation.
-
Replace the upper glass cover the
right way round (i.e. stamp legible
from above)
-
Wipe water off. If new water forms
within the next 48 hours, please
contact your Service Organization.
-
Clean
see
Sect. 5
Sect. 10
Sect. 10
Sect. 6
Sect. 4
Sect. 10
Sect. 4
Sect. 6
Sect. 5
Sect. 10
Sect. 9
Sect. 9
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