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1. The compressor will not start for three minutes after stop of operation.
2. This control is not applicable if the power supply is cut off and on again or after 4-way valve deices condition.

1. Once the compressor starts operation, it will not stop its operation for 30 seconds.
2. However, it can be stopped using remote control or Auto Switch at indoor unit.

1. When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be

decreased.

2. If the running current does not exceed X value for five seconds, the frequency instructed will be increased.

3. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes.

4. The first 30 minutes of cooling operation, (A) will be applied.

A. Overheating Prevention Control

1. When the IPM temperature rises to 110

qC, compressor operation will stop immediately.

2. Compressor operation restarts after three minutes the temperature decreases to 95

qC.

3. If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking (“F96 is indicated).

B. DC Peak Current Control

1. When electric current to IPM exceeds set value of 30.0 ± 5.0 A, the compressor will stop operate. Then, operation will restart

after three minutes.

2. If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will restart after two

minutes.

3. If the set value is exceeded again within 30 seconds after the compressor starts, the operation will restart after one minute. If

this condition repeats continuously for seven times, all indoor and outdoor relays will be cut off, timer LED will be blinking
(“F99” is indicated).

E24JK

E28JK

Operation Mode

 X (A)

Y (A)

 X (A)

Y (A)

Cooling/Soft Dry (A)

15.0

19.0

15.2

19.0

Cooling/Soft Dry (B)

13.6

19.0

13.8

19.0

Cooling/Soft Dry (C)

15.0

19.0

15.2

19.0

Heating

13.4

19.0

15.1

19.0

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Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency
are as below figure.
If compressor discharge temperature exceeds 112

qC, compressor will be stop, occurs 4 times per 20 minutes, timer LED will be

blinking (“F97” is to be confirmed).

a. Control start conditions

• For 5 minutes, the compressor continuously operates and outdoor total current is between 0.65A and 1.65A.
• During Cooling and Soft Dry operations:

Indoor suction temperature - indoor piping temperature is below 4

qC.

• During Heating operations :

Indoor piping temperature - indoor suction is under 5

qC.

b. Control contents

• Compressor stops (and restart after 3 minutes).
• If the conditions above happen 2 times within 20 minutes, the unit will:

- Stop operation
- Timer LED blinks and “F91” indicated.

• When the compressor operate at frequency lower than 24 Hz continued for 20 minutes, the operation frequency will be changed

to 23 Hz for 2 minutes.

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• When all the below conditions comply, the compressor frequency will change to lower frequency.

The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.
This control will begin 1 minute after the compressor starts.
Compressor frequency will adjust base on Outdoor Air Temperature.

i. Pipe temperature limitation/restriction

• Detects the Outdoor pipe temperature and carry out below restriction/limitation (Limit the compressor Operation frequency)
• The compressor stop if outdoor pipe temperature exceeds 63

qC.

• If the compressor stops 4 times in 20 minutes, Timer LED blinking (F95: outdoor high pressure rise protection)

1. To prevent dew formation at indoor unit discharge area.
2. This control activated if:

• Outdoor air temperature and Indoor pipe temperature judgment by microcontroller if fulfilled.
• When Cooling or Dry mode is operated more than 20 minutes or more.

3. This control stopped if:

• Compressor stopped.
• Remote control setting changed. (fan speed / temperature)
• Outdoor air temperature and indoor intake temperature changed.

4. Fan speed, angle of louver (vertical airflow angle) will be adjusted accordingly in this control.

• Fan speed will be increased slowly if the unit is in quiet mode but no change in normal cooling mode.

1. To prevent dew formation at indoor unit discharge area.
2. This control starts if all conditions continue for 20 minutes:

• Operated with Cooling or Soft Dry Mode.
• Indoor intake temperature is between 25

qC and 29qC.

• Outdoor air temperature is less than 30

qC.

• Quiet Lo fan speed.

3. This control stopped if:

• When receive air swing change signal from Remote Control.

4. The horizontal louver will be fixed at 26

q (regardless of Auto or Manual Airflow Direction Setting)

5. The vertical louver will be fixed front.

Temperature, T, for:

Cooling/Soft Dry

Heating

Indoor intake air (

qC)

T < 15 or T 

30

—

Outdoor air (

qC)

T < 16 or T 

38

T < 4 or T 

24

Indoor heat exchanger (

qC)

T < 30

T

0

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1. When indoor heat exchanger temperature is lower than 0

qC continuously for six minutes, compressor will stop operating.

2. Compressor will resume its operation three minutes after the indoor heat exchanger is higher than 5

qC.

3. At the same time, indoor fan speed will be higher than during its normal operation.
4. If indoor heat exchanger temperature is higher than 5

qC for five minutes, the fan speed will return to its normal operation.

1. Control start conditions

• During Cooling operation and soft dry operation.

- During thermo OFF condition, indoor intake temperature is less than 10°C or
- Compressor stops for freeze prevention control

• Either one of the conditions above occurs 5 times in 60 minutes.

2. Control contents

• Operation stops.
• Timer LED blinks and “H99” indicated.