Carrier 48HC - Low Ambient Control; Comfortlink Control

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Low Ambient Control (Factory Option)
If the unit comes with Electro--Mechanical (EM) control,
then no adjustment is necessary.
If the unit comes with PremierLinkt or RTU Open
control option, then refer to its installation control manual
for details on adjusting “Cooling Lock--Out” setting and
configure for your specific job requirements.
ComfortLink (Factory Option)
For details on operating 48HC units equipped with the
factory installed ComfortLink option, refer to Controls,
Start--Up, Operation and Troubleshooting for 48/50HC
04--28 Single Package Rooftop Unit with ComfortLink
Controls (Catalog No. 48--50HC--C02T, or later).
C12250
Fig. 41 -- 48HC Control Box Component Locations with ComfortLink
48HC