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No.
14
Item
Central control
mode selection
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-AMT21
[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.)
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).
15
16
17
Energy-save
control
(By connected
outdoor unit)
Max. frequency
cut control
DC motor
(For 4-way air
discharge
cassette type
only)
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] opera-
tion mode.
2) COOL operation mode: the frequency is controlled
according to
the following
figure if
To < 28°C.
1) When the fan operation has started, positioning of the
stator and the rotor are performed.
(Moves slightly with tap sound)
2) The motor operates according to the command from
the indoor controller.
NOTES :
• When the fan rotates while the air conditioner stops
due to entering of outside air, etc, the air conditioner
may operated while the fan motor stops.
• When a fan locking is found, the air conditioner stops,
and an error is displayed.
3) HEAT operation mode: the frequency is controlled
according to
the right
figure if
To > 15°C.
Check code [P12]
+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