Carrier RAV-SP180UT-UL Service Manual page 55

No. Item
6 Fan speed control
(Continued)
7 Cool air discharge
preventive control
Outline of specifications
COOL HEAT
HH
HH
H+ H+
H
H
L+
L+ L
L
UL UL
3) When thermo sensor turns OFF during heating, the fan
speed mode becomes UL ( weak).
4) When Ta is 77°F (25°C) or above at the beginning of HEAT
operation or when canceling defrost mode, H or HH mode
continues for 1 minute from the time when Tc enters zone
E. (Following figure.)
5) The HH fan speed for auto cooling/heating is set to a
speed higher than that for normal cooling/heating.
However, it varies depending on the temperature difference
of Tc during auto heating.
Ta
˚F [˚C]
116.6 [47]
107.6 [42]
1) In heating operation, the indoor fan is controlled based on
the detected temperature of Tc sensor or Tcj sensor. As
shown below, the upper limit of the revolution frequency is
restricted.
However B zone is assumed as C zone for
6 minutes and after when the compressor activated.
In defrost operation, the control value of Tc or Tcj is shifted
by 42.8°F (6°C).
Tc, Tcj
˚F [˚C]
HH
89.6 [32]
86.0 [30]
82.4 [28]
78.8 [26]
OFF
68.0 [20]
60.8 [16]
SP180
1080
1080
1020
1000
980
980
940
900
500
α
HH+
HH
H
L
E zone
UL
D zone
C zone
B zone
A zone
– 55 –
Remarks
SP240
1200
1180
1080
1020
980
980
940
900
500
"PRE-HEAT
indication
In D and E zones, the
priority is given to air
volume selection
setup of remote
controller.
"