Carrier 17/19EX User Manual
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off. The LID Status02 screen displays whether the heater is energized or not. If the PIC shows
that the heater is energized, but the sump is not heating up, the power to the oil heater may be
off or the oil level may be too low. Check the oil level, the oil heater contactor voltage, and oil
heater resistance.
The PIC will not permit compressor start-up if the oil temperature is too low. The control will
continue with start-up only after the temperature is within limits.
After the initial start or a 3 hour power failure, the controls will allow the machine to start once
the oil is up to proper temperature, but a slow ramp load rate of 2° F (1.6° C) per minute is used.
Be sure that the hand isolation valves on the oil line near the filter(s) (
, Items 1 and
2) are fully open before operating the compressor.
Lubrication requirements for the FA coupling and drive are contained in the manufacturer’s
instructions for these components.