80
13.4.2 S18MK, S24MK, S28MK
• Overheating Prevention Control
o When the IPM temperature rises to 100°C, compressor operation will stop immediately.
o Compressor operation restarts after 3 minutes the temperature decreases to 95°C.
• DC Peak Current Control
o When electric current to IPM exceeds set value of 18.5A, the compressor will stop operate.
During operation starts, if the DC peak current is detected after 30 seconds, the operation will restart
after 2 minutes.
During operation starts, if the DC peak current is detected within 30 seconds, the operation will restart
after 1 minute.
o After compressor starts for 30 seconds, if DC peak current is detected exceeding 18.5A and this condition
repeats continuously for 7 times, all indoor and outdoor relays will be cut off. Timer LED blinks and “F99”
indicated.
13.5 Compressor Overheating Prevention Control (For S18, S24MK, S28MK
only)
• Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The
changes of frequency are as below.
• If compressor discharge temperature exceeds 112°C, compressor will be stopped, occurs 4 times per 20 minutes,
timer LED will be blinking. “F97” is indicated.
Compressor=OFF
Compressor Frequency
Reduced
Compressor Frequency
Maintain
Free
Comp Discharge temperature
112°C
96°
90°C
13.6 Low Pressure Prevention Control (Gas Leakage Detection)
• Control start conditions
o For 5 minutes, the compressor continuously operates and outdoor total current is between 0.65A and 1.65A.
o During Cooling and Soft Dry operation:
Indoor suction temperature – indoor piping temperature is below 4°C
• Control contents
o Compressor stops (and restart after 3 minutes).
o If the conditions above happened 2 times within 20 minutes, the unit will:
Stop operation
Timer LED blinks and “F91” indicated.
13.7 Compressor Tank Temperature Rise Protection Control
• Control start conditions
o For 5 minutes, the compressor continuously operates and outdoor total current is between 0.65A and 1.65A.
o During Cooling and Soft Dry operation:
Indoor suction temperature -indoor piping temperature is below 4°C.
Indoor temperature and outdoor temperature is 30±5°C.
Remote Control setting 16°C and Hi Fan Speed.
• Control contents
o Compressor stops (and restart after 3 minutes)
o If the conditions above happened 2 times within 20 minutes, the unit will:
Stop operation
Timer LED blinks and “F91” indicated.
13.8 Low Frequency Protection Control 1
• When the compressor operates at frequency lower than 24Hz continued for 20 minutes, the operation frequency
will be changed to 23Hz for 2 minutes.
To Next Page
Loading...
Need help?
General
