Service Manual

– 53 –
+4
+3
Tsc
Ta(˚C)
Normal control
Max. frequency is
restricted to approximately
the rated cooling frequency
Tsh
–3
–4
Ta(˚C)
Normal control
Max. frequency is
restricted to approximately
the rated heating frequency
No.
15
16
17
Item
Central control mode
selection
Energy-saving
control
(In case of connect-
ing SDI outdoor unit)
Max. frequency cut
control
Outline of specifications
1) Setting at the centerl controller side enables to select the
contents which can be operated on the remote controller
at indoor unit side.
2) Setup contents
• 64 line central controller (TCB-SC642TLE2)
[Individual]: Operated on the remote controller
(Priority to second pushing)
[Central 1]: ON/OFF operation cannot be operated on
the remote controller.
[Central 2]: ON/OFF, mode selection, temp. setup
operations cannot be operated on the
remote controller.
[Central 3]: Mode selection and temp. setup operations
cannot be operated on the remote controller.
[Central 4]: Mode selection cannot be operated on the
remote controller.
∗ In case of the wireless type, the display lamp does not
change but the contents are same. If operating an item
which is prohibited by the central control mode from the
remote controller, it is notified with the receive sound,
Pi, Pi, Pi, Pi, Pi (5 times).
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 according 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 < 28°C.
Remarks
Display at remote
controller side
(No display)
[Central ] goes on
[Central
] goes on
[Central
] goes on
[Central
] goes on
3) HEAT operation mode:
It is controlled according to the
following figure if To > 15°C.