
Compressor Application Manual
13
Table of Main Refrigerator
Problems - Part 1
IV
No voltage at power supply
Very low voltage at power supply
Very high voltage
Interrupted electric cable or wiring
Wrong connection at the terminal board
Wiring or electrical components touching
metal parts
Electrical components interrupting the current flow to
the compressor
Internal light does not switch off
Inadequate transformer
Inadequate grounding
Thermostat switched off
Thermostat with no current passing through contacts
Thermostat does not switch off
Thermostat adjusted to the maximum (coldest)
Thermostat adjusted to the minimum (least cold)
Thermostat making noise
Thermostat with loose bulb
Thermostat with incorrect bulb position
Thermostat with failure or irregular operation
Inadequate thermostat
Incorrect overload protector
Faulty overload protector
Incorrect starting relay / PTC
Faulty starting relay / PTC
Incorrect starting capacitor
Faulty starting capacitor
Compressor connected to a voltage different from the one specified
Compressor winding interrupted or burned out
Compressor with current leakage to the housing
Compressor with high amperage (high current)
EXCESSIVE REFRIGERATION
INSUFFICIENT REFRIGERATION
ELECTRICAL SHOCK
NOISES
EXTERNAL SWEATING OF THE CABINET
INTERNAL SWEATING OF THE CABINET
HIGH POWER CONSUMPTION
DOES NOT WORK COMPRESSOR DOES NOT SWITCH ON/OVERLOAD PROTECTOR NOT WORKING
DOES NOT WORK COMPRESSOR DOES NOT SWITCH ON/OVERLOAD PROTECTOR WORKING
DOES NOT WORK COMPRESSOR SWITCHES ON/OVERLOAD PROTECTOR WORKING
POSSIBLE CAUSES - ELECTRICAL ORIGIN
MEASURES
See item in Chap. IV
1.1.1
1.1.2
1.1.3
2.1
2.2
2.3
2.4
2.5
2.6
3.1
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
5.1
5.2
6
6.1/6.2/6.3
7.1
7.2
19.1
19.2
19.3
19.9
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