Panasonic CS-E9PD3EA, Service Manual

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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 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.
13.1.3 Total Running Current Control
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.
E9PD3EA E12PD3EA
Operation mode X (A) Y (A) X (A) Y (A)
Cooling/Soft Dry (A) 4.29 14.70 6.38 14.70
Cooling/Soft Dry (B/C) 3.95 14.70 5.57 14.70
Heating 5.41 14.70 6.29 14.70
4 The first 30 minutes of cooling operation, (A) will be applied.