Panasonic CS-E7NKEW, Service Manual, Page: 76 / 189

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Troubleshooting method
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Press nanoe-G button or OFF/ON button to stop the operation and check the nanoe-G connector at PCB.
ƒ After that, press nanoe-G button again to confirm the nanoe-G indicator do not blinks.
ƒ The 24 timer counter will be clear after 10 minutes of normal operation or when operation stops.
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Error reset method
ƒ Press OFF/ON button to OFF the operation.
ƒ Press AUTO OFF/ON button at indoor unit to OFF the operation.
ƒ OFF Timer activates
ƒ Power supply reset.
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nanoe-G breakdown error
ƒ Judgment method
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Hi-feedback voltage (at microcontroller) supplied to the nanoe-G system when nanoe-G operation is
OFF; nanoe-G breakdown error show immediately.
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It is due to indoor PCB or nanoe-G high voltage power supply damage.
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Operations except nanoe-G continue. Both Timer indicator and nanoe-G indicator blink.
ƒ Troubleshooting method
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Press nanoe-G button or OFF/ON button to stop the operation.
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Change nanoe-G high voltage power supply or main PCB.
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When Lo-feedback voltage supplied to nanoe-G system during nanoe-G operation ON, nanoe-G
indicator and Timer indicator stop blinking.
12.12 Mild Dry Cooling Operation
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This operation helps to prevent decreases in room humidity while maintaining the setting temperature.
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During unit running at Cooling operation mode, if “Mild Dry Cooling” button is pressed, Mild Dry Cooling operation
starts and Mild Dry Cooling indicators turns ON at remote control display.
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Mild dry cooling operation is unavailable when the unit is operating Auto mode and Soft Dry model operation.
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Mild dry cooling operation is cancelled when the unit turned OFF, Mild Dry Cooling button is pressed again or
when the operation mode changed from Cooling to other mode.
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ECONAVI, Powerful, Quiet and Mild Dry Cooling mode cannot function at the same time, the unit will follows the
operation according to the last signal received.
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During this operation, the compressor frequency changes according to operating condition to prevent room
humidity decreases and when AUTO AIR SWING is set, the vertical airflow direction fixed at lower limit position.
12.13 AUTO COMFORT and ECO NAVI Operation
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Area of human availability, activity level and absent is judged based on pulses by using 2 infrared sensors. The
internal setting temperature shift, fan speed and horizontal airflow direction are adjusted in order to provide
comfort environment while maintain the energy saving level.
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AUTO COMFORT start condition:
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When AUTO COMF button is pressed.
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AUTO COMFORT stop conditions:
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When AUTO COMF button is pressed again.
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When unit is OFF by OFF/ON button.
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When unit is OFF when OFF TIMER activates.
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When unit is OFF by AUTO OFF/ON button at indoor unit.
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When POWERFUL, QUIET operation activates.
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When ◄► button is pressed.
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ECO NAVI start condition:
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When ECO NAVI button is pressed.