T-359 6–6
6.13 ABNORMAL TEMPERATURES
High discharge temperature
Condenser coil dirty 7.6
Condenser fan rotating backwards 7.7
Condenser fan inoperative 7.7
Refrigerant overcharge or noncondensibles 7.3
Discharge service valve partially closed Open
Electronic expansion valve (EEV) control malfunction Replace
Failed suction pressure transducer (SPT),
or evaporator pressure transducer (EPT)
Replace
Discharge temperature sensor drifting high Replace
Failed economizer expansion valve, economizer coil,
or economizer solenoid valve
Replace
Plugged economizer expansion valve, economizer coil,
or economizer solenoid valve
Replace
Loose or insufficiently clamped sensor Replace
6.14 ABNORMAL CURRENTS
Unit reads abnormal currents Current sensor wiring Check
CONDITION POSSIBLE CAUSE
REMEDY/
REFERENCE
SECTION
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