Carrier VECTOR 1550 Series Operation & Service Manual

62-61753-21 7-8AlarmNO. Steps ALARM / CAUSE CORRECTIVE ACTION14 HIGH A/C AMPS TRIGGER-ON: AC Current Sensor 1 or 2 is greater than 28.5A for 3 seconds. UNIT CONTROL: Engine operation: engine and unit shutdown and alarmStandby operation: Refrigeration system shutdown and alarm with PSCONstill energized. RESET CONDITION: Auto reset after 14 minutes if the AC current sensor readings are less than27 amps or alarm may be manually reset via keypad or by turning unit off then back on.NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the activealarm should clear itself (refer to reset condition above). Operate the unit through the appropriate modes to see ifany active alarm occurs. Continue with the steps below as necessary.1 Check Generator Voltage (If Used When Alarm Occurred)a. Check voltage at GENCON L1-L2,L1-L3, L2-L3.Must be within voltage limits shown in Section 2.12.2 Check Power Source Voltage (If Used When Alarm Occurred)a. Check voltage at PSCON L1-L2,L1-L3, L2-L3.Must be within voltage limits shown in Section 2.12.3 Check Voltage Output From Contactorsa. Check voltage at GENCON T1-T2,T1-T3, T2-T3.Must be within voltage limits shown in Section 2.12.b. Check voltage at CCON with com-pressor operating. T1-T2, T1-T3,T2-T3.Must be within voltage limits shown in Section 2.12.4 Verify AC Current Sensor Accuracya. Place the SROS in theSTART / RUN position.Unit AC Current #1 and #2 reading in Data List mustbe 0.0 ± 1.0 amp.5 Perform Pretrip Checka. Clear Active Alarm list, then runPretrip & check for any newalarms.Any active alarms must be corrected and cleared be-fore proceeding.6 Check High Voltage Components Amp Drawa. Check condenser fan amp draw forCDCON on all 3 legs.The unit must be running for these tests to be per-formed. Refer to Section 2.11 for correct electrical val-ues.b. Check evaporator fan motor ampdraw for 1EVCON on all 3 legs.c. Check compressor amp draw forCCON on all 3 legs.d. Check Lower Evaporator Heateramp draw for 1HTCON1.e. Check Upper Evaporator Heateramp draw for 1HTCON2.