a. Control start conditions
Control will perform when (1) - (3) condition continues operation for 5 minute and (4) is fulfill.
1.During cooling and dry operation: Frequency more than normal Fc.
During Heating operation: Frequency more than Fh
Air temperature: Indoor and outdoor 20±2 degrees C Remote control Hi; 30 degrees C
2.Outdoor total current I Air conditioning: 0.65<=I<1.65.
Heating: 0.65<=I<1.65
It is not during deice operation
3.During cooling and dry operation: indoor
During heating operation: Indoor piping
•compressor stops (restart after 3 minutes)
•if happen 2 times within (20 minutes), perform the following operation
1)Unit stop operation
2)Timer LED blink and “F91” indicated
8.2.1.8.Low Frequency Protection Control 1When the compressor operate at frequency lower than 22 Hz continued for 20 minutes, the operation frequency will be increased to 22 Hz for two minutes.
8.2.1.9.Low Frequency Protection Control 2When all the below conditions occur, minimum value (Freq. MIN) for the frequency instructed to compressor will change to 30 Hz for cooling mode operation and 20 Hz for heating mode operation.
Temperature, T, for: | Cooling/Soft Dry | Heating | ||
Indoor intake air (°C) | T | 15 or T | 30 | — |
|
|
|
|
|
Outdoor air (°C) | T | 16 or T | 38 | T 4 or T 24 |
Indoor heat exchanger (°C) |
| T 30 |
| T 0 |
|
|
|
|
|
•During cooling operation (except Anti Freezing control, soft dry) carry out the following operation.
1.During Remote Control setting is 28°C & below.
Indoor Fan Speed | min Hz |
More than Hi | 29 |
|
|
More than Me- | 27 |
Less than Me- | 27 |
|
|
Automatic | 27 |
However, when less than thermo OFF for 120 sec. continuously, the above control will be cancel.
37