Carrier RAV-SP180UT-UL Service Manual page 41

No. Item
6 Fan speed control
Outline of specifications
1) Operation with (HH), (H), (L) or [AUTO] mode is carried
out by the command from the remote controller.
2) When the fan speed mode [AUTO] is selected, the fan
speed varies by the difference between Ta and Ts.
<COOL>
Ta ˚F [˚C]
+5.4 [+3.0]
HH
+4.5 [+2.5]
(HH)
+3.6 [+2.0]
H+ (HH)
+2.7 [+1.5]
H (HH)
+1.8 [+1.0]
L+ (H+)
+0.9 [+0.5]
L (H)
Tsc
L (H)
–0.9 [–0.5]
L (L+)
• Controlling operation in case when thermo of remote
controller works is same as a case when thermo of the
body works.
• If the fan speed has been changed once, it is not changed
for 3 minutes. However when the air volume is exchanged,
the fan speed changes.
• When cooling operation has started, select a downward
slope for the fan speed, that is, the high position.
• If the temperature is just on the difference boundary, the
fan speed does not change.
• Mode in the parentheses indicates one in automatic
cooling operation.
<HEAT>
Ta ˚F [˚C]
(–0.9) –1.8 [(–0.5) –1.0]
(0) Tsh
(+0.9) +1.8 [(+0.5) +1.0]
(+1.8) +3.6 [(+1.0) +2.0]
(+2.7) +5.4 [(+1.5) +3.0]
(+3.6) +7.2 [(+2.0) +4.0]
Value in the parentheses indicates one when thermostat of
the remote controller works.
Value without parentheses indicates one when thermostat of
the body works.
• If the fan speed has been changed once, it is not changed
for 1 minute. However when the fan speed exchanged, the
fan speed changes.
• When heating operation has started, select an upward
slope for the fan speed, that is, the high position.
• If the temperature is just on the difference boundary, the
fan speed does not change.
• Mode in the parentheses indicates one in automatic
heating operation.
• In Tc ≥ 140°F (60°C), the fan speed increases by 1 step.
A
B
C
D
E
F
G
L (L+)
L+ (H)
H (H+)
H+
(HH)
HH
(HH)
– 41 –
Remarks
HH > H+ > H > L+ >
L > UL
E
D
C
B
A
Tc: Indoor heat
exchanger sensor
temperature