M07J40G8-00 21/07/08 page 37
COMPRESSOR PROTECTION
1. Identify the part on the wiring diagram
2. Loose electric contacts/terminals, leads broken
3. electrical windings interrupted
4. Vacuum power voltage below the limits
5. power contactors / contacts defective
6. start-up power voltage lower than the limits
7. electrical absorption high / unbalanced
8. High compressor discharge temperature >
thermostatic device needs calibrating, insufficient
refrigerant charge
FAN PROTECTION
1. Identify the part on the wiring diagram
2. fan mechanically jammed, bearings / drive belt (if
present)
3. Loose electric contacts/terminals, leads broken
4. electrical windings of fan interrupted
5. power supply voltage below limits
6. electrical absorption high / unbalanced
PUMP PROTECTION
1. Identify the part on the wiring diagram
2. pump jammed (probable for circulator pump after
lengthy seasonal shutdowns)
3. Loose electric contacts/terminals, leads broken
4. electrical windings of fan interrupted
5. power supply voltage below limits
6. electrical absorption high / unbalanced
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