4-20
4
6) Cooling Freeze Prevention Control
The following control is performed during cooling operations (including dry mode operation), in accordance
with whichever of the indoor heat exchanger temperatures (E1 or E2) is lower. (See the chart below.)
7) Discharge Temperature Control
The following control is performed to prevent the discharge temperature from rising abnormally in order to protect
the inverter compressor.
In accordance with the temperature of the discharge sensor TD, such controls are performed as to limiting the
increase of inverter frequency, decreasing it or halting operation of the compressor.
* If the discharge temperature exceeds 106Ā°C, operations of the compressor are halted and restarted after 3
minutes.
If this start/stop activity is repeated 5 times, the alarm "P03" (abnormal discharge temperature) occurs.
min. (E1, E2)
Frequency increased
Frequency increases prevented
Frequency decreased
5+Ī²
2+Ī±
Setting No.
EEPROM setting in outdoor unit
CODE: 3F (for Ī± setting)
Ī±
-15
-15
0
0
*
Setting at factory shipment
*
9
9
Setting No.
CODE: 40 (for Ī² setting)
Ī²
-15
-15
0
0
*
9
9
TD (Discharge Temperature)
Outdoor unit operations halted
Frequency decreased
Frequency increases prevented
Frequency increased slower than normal
103
101
97
106
Normal operations (no control)
Ā°C
(a) Frequency will not be decreased less than 6 minutes after thermostat ON.
(b) The threshold value is increased in accordance with the indoor load (differences of temperature).
Outdoor EEPROM : Amendment of Ī± and Ī² values
can be made due to 3F or 40.
SM830231-02īSingleī꬧å·.indbīīī20SM830231-02īSingleī꬧å·.indbīīī20 2014/09/09īīī21:15:232014/09/09īīī21:15:23
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