Panasonic CS-VU9SKQ, Service Manual, Page: 72 / 136

72

Error detection control
When nanoe-G indicator blinks, it indicates error listed below:
o
Nanoe-G connector at main PCB open
 Judgment method

During nanoe-G operation, nanoe-G connector at main PCB is opened.

Troubleshooting method

Connect the connector or stop operation to cancel the blinking.

Switch off the power supply and unplug before cleaning.

Clean the dirty nanoe-G generator with cotton bud.
o
Abnormal discharge error
 Judgment method

During nanoe-G operation, the nanoe-G system has abnormal discharge due to short-circuit caused
by water or dust adhesion and so forth, with Lo-feedback voltage (at microcontroller).

When abnormal discharge occurred, every 30 minutes the unit supplies power to the nanoe-G
system.

When abnormal discharge occurs for 24 times continuously, nanoe-G indicator blinks.
 Troubleshooting method

Press nanoe-G button or OFF/ON button to stop the operation and check the nanoe-G connector at
PCB.

After that, press nanoe-G button again to confirm the nanoe-G indicator do not blinks.

The 24 timer counter will be clear after 10 minutes of normal operation or when operation stops.
 Error reset method

Press “OFF/ON” button to OFF the operation.

Press AUTO OFF/ON button at indoor unit to OFF the operation.

OFF Timer activates.

Power supply reset.
o
nanoe-G breakdown error
 Judgment method

Hi-feedback voltage (at microcontroller) supplied to the nanoe-G system when nanoe-G operation is
OFF; nanoe-G breakdown error show immediately.

It is due to indoor PCB or nanoe-G high voltage power supply damage.

Operations except nanoe-G continue. Both Timer indicator and nanoe-G indicator blink.
 Troubleshooting method

Press nanoe-G button or OFF/ON button to stop the operation.

Change nanoe-G high voltage power supply or main PCB.

When Lo-feedback voltage supplied to nanoe-G system during nanoe-G operation ON, nanoe-G
indicator and Timer indicator stop blinking.