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SM830078
11. PROCESSES AND FUNCTIONS
(4) Outdoor Fan Speed Control
1) C4232 Type
• In low outdoor temperature, the outdoor fan is set automatically from HIGH to LOW to
prevent the indoor heat exchanger from freezing.
• When the outdoor temperature falls below 78 °F, the outdoor fan is set from HIGH to
LOW automatically. When the outdoor temperature rises to 82 °F, the outdoor fan is
set from LOW to HIGH automatically.
2) CL4232 Type
• In low outdoor temperature, the outdoor fan is set automatically from HIGH to MED,
LOW to prevent the indoor heat exchanger from freezing.
• When the outdoor temperature falls below 77 °F, the outdoor fan is set from HIGH to
MED automatically. When the outdoor temperature rises to 81 °F, the outdoor fan is
set from MED to HIGH automatically.
• When the outdoor temperature falls below 59 °F, the outdoor fan is set from MED to
LOW automatically. When the outdoor temperature rises to 63 °F, the outdoor fan is
set from LOW to MED automatically.
• When the outdoor temperature falls below 47 °F, the outdoor upper fan is set from
LOW to OFF and Lower fan is set from LOW to MED antomatically. When the outdoor
temperature rises to 50 °F, the outdoor upper fan is set from OFF to LOW and Lower
fan is set from MED to LOW antomatically.
870
380
230
FAN ROTATION RPM
Upper fan: OFF
Lower fan: M
Upper fan: M
Lower fan: M
Upper fan: H
Lower fan: H
Upper fan: L
Lower fan: L
47 50 59 63 77 81
OUTDOOR AIR TEMPERATURE °F DB
1344_X_S
Fig. 11