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13. Protection Control
13.1 Protection Control For All Operations
13.1.1 Restart Control (Time Delay Safety Control)
• The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on
again by pressing OFF/ON button at remote control within this period.
• This control is not applicable if the power supply is cut off and on again.
• This phenomenon is to balance the pressure inside the refrigerant cycle.
13.1.2 Total Running Current Control
• When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor
operation will be decreased.
• If the running current does not exceed X value for 10 seconds, the frequency instructed will be increased.
• However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for
3 minutes.
Model CE9PK CE12PK
Operation Mode X (A) Y (A) X (A) Y (A)
Cooling/Soft Dry (A) 4.54 14.76 6.20 14.76
Cooling/Soft Dry (B) 3.95 14.76 5.64 14.76
Cooling/Soft Dry (C) 3.95 14.76 5.64 14.76
Heating 5.34 14.76 8.18 14.76
• The first 30 minutes of cooling operation, (A) will be applied.
40°C
39°
(C)
(A)
(B)
13.1.3 IPM (Power transistor) Prevention Control
• 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.
o If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking (“F96” is indicated).
• DC Peak Current Control
o When electric current to IPM exceeds set value of 20.2 A, the compressor will stop operate. Then, operation
will restart after 3 minutes.
o If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will
restart after 1 minute.
o If the set value exceeded again within 30 seconds after the compressor starts, the operation will restart after
2 minutes. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off, timer
LED will be blinking (“F99” is indicated).
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