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Item Operation flow and applicable data, etc. Description
4. Release
protective
control by
temperature
of indoor
heat
exchanger
Freeze preventive control (Low temperature release)
1) The cooling operation (including Dry operation) is performed as
follows based on the detected temperature of Tc sensor or Tcj
sensor.
When [J] zone is detected for 6 minutes (Following figure), the
commanded frequency is decreased from the real operation
frequency.
After then the commanded frequency changes every 30 seconds
while operation is performed in [J] zone.
In [K] zone, time counting is interrupted and the operation is held.
When [ I ] zone is detected, the timer is cleared and the operation
returns to the normal operation.
If the commanded frequency becomes S0 because the operation
continues in [J] zone, the return temperature A is raised from 7°C to
12°C until [ I ] zone is detected and the indoor fan operates with [L]
mode.
Tcj :
Indoor heat exchanger
sensor temperature
High-temp. release control
1) The heating operation is performed as follows based on the
detected temperature of Tc sensor or Tcj sensor.
• When [M] zone is detected, the commanded frequency is
decreased from the real operation frequency. After then the
commanded frequency changes every 30 seconds while
operation is performed in [M] zone.
• In [N] zone, the commanded frequency is held.
• When [L] zone is detected, the commanded frequency is returned
to the original value by approx. 6Hz every 60 seconds.
NOTE:
When the operation has started or when Tc or Tcj < 30°C at start of the
operation or after operation start, temperature is controlled between
values in parentheses of A and B.
Same status as that when
“thermostat-OFF” (status
that the air conditioner
enters in the room temp.
monitor mode when the
temperature reached the
setup temperature on the
remote controller)
7
5
A
J
K
I
(˚C)
A
B
L
N
M
(˚C)Tc
Tcj
Control temp. (°C)
AB
53 (51) 51 (49)
Setup at shipment
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