6.16 Abnormal Temperatures; 6.17 Abnormal Currents - Carrier PrimeLINE 69NT40-561-200 Operation And Service Manual

CONDITION

6.16 ABNORMAL TEMPERATURES

High discharge temperature

6.17 ABNORMAL CURRENTS

Unit reads abnormal currents Current sensor wiring
T-362
POSSIBLE CAUSE
Condenser coil dirty
Condenser fan rotating backwards
Condenser fan inoperative
Refrigerant overcharge or non-condensibles
Discharge service valve partially closed
Electronic expansion valve (EEV) control malfunction Replace
Failed suction pressure transducer (SPT) or evapora-
tor 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
Section 7.11.2
Section 7.12
Section 7.12.1
Section 7.3
Open
Replace
Replace
Replace
Replace
Replace
Check