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22
The following paragraphs list a number of possible faults that may happen, their possible
cause and the advised remedy. If a problem happens, refer to the explanations of the handling
sequences.
Writing example:
+
Fault
-
Possible cause
x
Remedy
+ Refrigeration unit does not run
- Feeding cable is not connected
x Insert the plug into the intake
- Low voltage in line
x Set the voltage source
- Control thermostat does not work
x Replace the thermostat
- Electric circuits openi
x Localize and restore the breaking
- Condenser, relay or thermic overload protection defective
x Localize and replace
+ Compressor overheats
- Relay does not work properly
x Check and replace relay
- Condenser fan does not work properly
x Control and replace defective part
- Condenser is dirty or clogged
x Clean condenser
- Filters are dirty or clogged
x Clean filters
+ Unit operates in short cycles (starts and stops in less than a minute) or runs
continuously.
- Condenser dirty or clogged
x Clean condenser
- Inadequate air circulation
x Ensure at least 10 cm between cabinet and wall
- Low voltage in line
x Voltage must be at least 200 V AC 50 HZ
- Motor thermic overload protection defective
x Localize and replace
+ Unit runs but does not cool cabinet
- Cooling is insufficient
x Localize the leak, isolate and refill the unit
- Ice in the evaporator
x Defrost and check functioning
- Door gasket does not seal
x Check and settle
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11 - FAULT FINDING

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