Download AIR-CONDITIONER

No.
7
Item
Freeze
preventive
control
(Low
temperature
release)
Outline of specifications
Remarks
1) The cooling operation (including Dry operation) is
Tcj : Indoor heat experformed as follows based on the detected temperachanger sensor
ture of Tc sensor or Tcj sensor.
temperature
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 5°C to 12°C until [I] zone is detected
and the indoor fan
operates with [M] mode.
(˚C)
5
A
I
K
2
J
In heating operation, the freeze-preventive control
works if 4-way valve is not exchanged and the condition is satisfied. (However the temperature for J zone
dashing control is changed from 2°C to –5°C.)
8
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.
Setup at shipment
Control temp (°C)
A
B
56 (54)
52 (52)
Tc (˚C)
Tcj A
M
N
B
L
NOTE :
When the operation has started or when Tc or Tcj became Same when thermostat is
lower than 30°C after start of the operation, temperature
turned off.
is controlled between values in parentheses of A and B.
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