Repairs of electrical parts and refrigeraion circuit
Trouble shooting
only by qualified technician
Malfunction
Cause
Remedial Action
Highpressure switch
Air in refrigeration circuit
evacuate circuit, refill refrigerant
has switched off
(insufficiently evacuated after repair)
o
Control lamp shows red
Refrigeration circuit overfilled
adjust
air-cooled machine:
machine must not be placed in the sun or
*
ambient temperature too high
too warm ambience. Improve ventilation.
*
condenser soiled
clean with brush or compressed air,
never with wire brush
*
ventilator motor or speed control
check / replace
defective
water-cooled machine:
*
insufficient water pressure
increase water pressure to min 2 bar
*
condenser soiled
clean condenser with bottle brush,
hot water and antilime agent
clean water filter
*
water or condensing pressure
check / clean / replace
governor misadjusted, soiled
or defective
Cut - out by compressor
*
compressor overheated
depending on ambient temperature let
machine cool for 3 hours, compressor
starts again automatically
*
wrong electrical connection
check
or defective protection switch
*
compressor defective
check / replace
Light barrier does not work
*
transmitter and receiver not in line
adjust
*
defective
check manually at short distance
*
dirty or lime scale
clean
Ice jam switch has cut off
switch defective
check
Ice jams back into cylinder
eliminate cause, readjust ice hose and
security switch. (page 3 point 13)
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