Panasonic CS-PS9JKT Service Manual

Contents

Panasonic CS-PS9JKT Service Manual Manual pdf 35 page image

3512. Protection Control12.1 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 onagain 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 operationalthough the intake air temperature has reached the thermo-off temperature. However, force stop by pressing theOFF/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 afull 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 compressoroperation 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 3minutes.Model PS9*** PS12***Operation Mode X (A) Y (A) X (A) Y (A)Cooling / Soft Dry (A) 5.5 15.0 7.3 15.0Cooling / Soft Dry (B) 4.9 15.0 6.7 15.0• The first 30 minutes of cooling operation, (A) will be applied.12.4 IPM (Power Transistor) Prevention Control• Overheating Prevention Controlo 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 Controlo When electric current to IPM exceeds set value of 18.5A, the compressor will stop operate. Then, operationwill restart after 3 minutes.o If the set value exceeds again more than 30 seconds after the compressor starts, the operation will restartafter 2 minutes.o If the set value exceeds again within 30 seconds after the compressor starts, the operation will restart after 1minute. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off.(B)(A)Outdoor air temperature38.5°C37.5°C