Panasonic CS-S18KKQ

58
12 Protection Control
12.1 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.
12.2 30 Seconds Forced Operation
• Once the air conditioner is turned on, the compressor will not stop within 30 seconds in a normal operation
although the intake air temperature has reached the thermo-off temperature. However, force stop by pressing the
OFF/ON button at the remote control is permitted or the Auto OFF/ON button at indoor unit.
• The reason for the compressor to force operation for minimum 30 seconds is to allow the refrigerant oil run in a
full cycle and return back to the outdoor unit.
12.3 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 5 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 S9*** S12*** S18*** S24***
Operation Mode X (A) Y (A) X (A) Y (A) X (A) Y (A) X (A) Y (A)
Cooling / Soft Dry (A) 5.5 15.0 7.3 15.0 9.2 15.0 11.1 19.0
Cooling / Soft Dry (B) 4.9 15.0 6.7 15.0 8.1 15.0 10.3 19.0
• The first 30 minutes of cooling operation, (A) will be applied.
12.4 IPM (Power Transistor) Prevention Control
12.4.1 S9KK, S12KK
• 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. Then, operation
will restart after 3 minutes.
o If the set value exceeds again more than 30 seconds after the compressor starts, the operation will restart
after 2 minutes.
o If the set value exceeds again within 30 seconds after the compressor starts, the operation will restart after 1
minute. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off.
(B)
(A)
Outdoor air temperature
38.5°C
37.5°C