Carrier RAV-SP180UT-UL Service Manual page 49

No. Item
16 Central control mode
selection
17 Energy-saving
control
18 Max. frequency cut
control
Outline of specifications
1) Setting at the central controller side enables to
select the contents which can be operated on
the remote controller at indoor unit side.
2) RBC-AMT32UL
[Last push priority] :
The operation contents can be selected from
both remote controller and central controller of
the indoor unit side, and the operation is
performed with the contents selected at the last.
[Center] :
Start/Stop operation only can be handled on the
remote controller at indoor unit side.
[Operation Prohibited] :
It cannot be operated on the remote controller at
indoor unit side. (Stop status is held.)
1) Selecting [AUTO] mode enables an energy-
saving to be operated.
2) The setup temperature is shifted (corrected) in
the range not to lose the comfort ability accord-
ing to input values of various sensors.
3) Data (Input value room temp. Ta, Outside temp.
To, Air volume, Indoor heat exchanger sensor
temp. Tc) for 20 minutes are taken the average
to calculate correction value of the setup
temperature.
4) The setup temperature is shifted every 20
minutes, and the shifted range is as follows.
In cooling time: +1.5 to – 1.0K
In heating time: –1.5 to +1.0K
1) This control is operated by selecting [AUTO] operation mode.
2) COOL operation mode:
It is controlled according to the
following figure if To < 82.4°F (28°C).
Ta
˚F [˚C]
Normal control
+7.2 [+4]
+5.4 [+3]
Tsc
Max. frequency is
restricted to approximately
the rated cooling frequency
– 49 –
Remarks
(No display)
[CENTER] goes on.
[CENTER] goes on.
In a case of wireless type, the
display lamp does not change.
However, contents which can
be operated are same.
The status set in
[CENTER]/[Operation
Prohibited] mode is notified
with the receiving sound
"Pi, Pi, Pi, Pi, Pi" (5 times).
3) HEAT operation mode:
It is controlled according to the
following figure if To > 59°F (15°C).
Max. frequency is
Ta
restricted to approximately
˚F [˚C]
the rated heating frequency
Tsh
–5.4 [–3]
–7.2 [–4]
Normal control