6.13 Abnormal Temperatures; 6.14 Abnormal Currents - Carrier 69NT40-561-019 Operation And Service Manual

CONDITION

6.13 ABNORMAL TEMPERATURES

High discharge temperature

6.14 ABNORMAL CURRENTS

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