Carrier 40MPHA - Fan Mode; Cooling Mode

11
FAN Mode
When the FAN mode is activated:
S The outdoor fan and compressor stop.
S Temperature control is disabled and the indoor room
temperature is displayed.
S The indoor fan speed can be set to 1%~100%, or AUTO.
S The louver operations are identical to those in
COOLING mode.
S Auto fan: In FAN−ONLY mode, the AC operates the
same as auto fan in the COOLING mode with the
temperature set at 75
_F 24_C (Tsc =75_F (24_C).
COOLING Mode
Compressor Control
Reach the configured temperature:
1 When the compressor runs continuously for less than 120
minutes.
S If the following conditions are satisfied, the compressor
ceases operation.
S While the calculated frequency(fb) is less than the
minimum limit frequency(FminC).
S While protective time is more than or equal to ten
minutes.
S While T1 is lower than or equal to
(Tsc−CDIFTEMP 31
_F (−0.5_C)
NOTE: CDIFTEMP is the EEPROM setting parameter. It is
35.6_F (2_C) usually.
2 When the compressor runs continuously for more than 120
minutes.
S If the following conditions are satisfied, the compressor
ceases operation.
S When calculated frequency(fb) is less than
minimum limit frequency(FminC).
S When protective time is more than or equal to ten
minutes.
S When T1 is lower than or equal to
(Tsc−CDIFTEMP).
NOTE: CDIFTEMP is the EEPROM setting parameter. It is
35.6_F (2_C) usually.
3 If one of the following conditions is satisfied, regardless of
time.
S Compressor running frequency is more than the test
frequency.
S When the compressor running frequency is equal to the
test frequency, T4 is more than 59_F (15_C) or no T4 or
T4 fault.
S Change setting temperature
S Turbo or sleep function on/off
S Various frequency limit shutdown occurs
NOTE: CDIFTEMP is EEPROM setting parameter. It is 35.6_F
(2
_C) usually.
Indoor Fan Control
1 In the COOLING mode, the indoor fan operates
continuously. The fan speed can be set to 1%−100%, or
AUTO.
2 AUTO fan
S Descent Curve
S When T1−Tsc is lower than or equal to 38_F
(3.5
_C), fan speed reduces to 80%;
S When T1−Tsc is lower than or equal to 34_F
(1
_C), fan speed reduces to 60%;
S When T1−Tsc is lower than or equal to 33_F
(0.5
_C), fan speed reduces to 40%;
S When T1−Tsc is lower than or equal to 32_F
(0_C), fan speed reduces to 20%;
S When T1−Tsc is lower than or equal to 31_F
(−0.5
_C), fan speed reduces to 1%.
S Rise Curve
S When T1−Tsc is higher than 32_F (0_C), fan
speed increases to 20%;
S When T1−Tsc is higher than 33_F (0.5_C), fan
speed increases to 40%;
S When T1−Tsc is higher than 34_F (1_C), fan
speed increases to 60%;
S When T1−Tsc is higher than 35_F (1.5_C), fan
speed increases to 80%;
S When T1−Tsc is higher than 39_F (4_C), fan
speed increases to 100%.
Outdoor Fan Control
S The outdoor unit runs at a different fan speed according
to T4 and the compressor running frequency.
S For different outdoor units, the fan speeds are different.
Condenser Temperature Protection
When the condenser temperature exceeds a configured value, the
compressor ceases operations.
Evaporator Temperature Protection
When the evaporator temperature drops below a configured value,
the compressor and outdoor fan ceases operations.