Carrier 38EV024320 User Manual
Page 23
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
n
ERROR CODE #9 - OVERCURRENT TRIP
REASON; OVERCURRENT SITUATION AFTER FIRST 2 MINUTES OF RUN TIME.
POSSIBLE CAUSES: 1) Defective compressor or inverter.
2) Failed control board.
3) loose or corroded high voltage or inverter alarm connection.
4) Excessive loading due to:
Cool Mode - improper fan operation, dirty outdoor coil, overcharge.
Heat Mode - improper blower operation, dirty air fiiter, blocked duct, overcharge.
Reference Figure 24
Notes:
1
)
2)
Inverter alarm may be monitored using DC voltmeter at(A)(see Fig). Aiarm-on is 1 VDC. Alarm may ener
gize before inverter trips.
Inverter trip LED (yellow) may be monitored by removing safety sheild from upper control box. View
downward into box, beyond contactor and under main control board at inverter board. See Figure 7 for
LED iocation.
Power (red) LED should light whenever contactor closes.
Power, Trip LED’s will go off when contactor de-energizes.
Adjust thermostat 4°F or more above or beiow room temperature, depending on mode, to force system to
fuil speed.
kmm