7-2. Protective Functions
Freeze prevention
During COOL or DRY operation, freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches the conditions below.
1.
2.Restart after
Indoor heat exchanger | temperature °F (°C) | 46 |
|
| C |
(8) |
|
|
| ||
43 | A | B |
| ||
(6) |
|
|
| ||
36 |
|
|
| ||
(2) |
|
|
| ||
* |
|
|
| ||
|
| a | b | c | d |
a.Area: Automatic capacity control
b.When the temperature drops below Point A, the operation frequency is reduced by a certain proportion.
c.Area: Frequency increase is prohibited.
d.When the temperature reaches Point C or above, freezing prevention is ended and control is the same as in the a area.
*When the temperature drops to below 36°F(2°C) (continuously for 2 minutes or longer), the compressor stops.
Once the freeze condition is detected, the air conditioner will work less than the maximum frequency until it is turned off.
NOTE (CLxx models only)
The Freeze Prevention Control during the Low Ambient Cooling Mode (outside air temperature:59°F(15°C) or lower) is as follows. The compressor stops when the temperature of indoor heat exchanger becomes less than 36°F(2°C).
The compressor restarts when the temperature of indoor heat exchanger becomes 46°F(8°C) or higher.
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