13-9
TROUBLESHOOTING
SM PNXDCI 1-A.1 GB
13.1.8 Precaution, Advise and Notice Items
13.1.8.1 High voltage in Outdoor unit controller.
Whole controller, including the wires that are connected to the Outdoor unit controller may have
the potential hazard voltage when power is on. Touching the Outdoor unit controller may cause an
electrical shock.
Advise: Don’t touch the naked lead wire and don’t insert finger, conductor or anything else into the
controller when power is on.
13.1.9 Charged Capacitors
Three large-capacity electrolytic capacitors are used in the Outdoor unit controller. Therefore, charging
voltage (380VDC) remains after power down. Discharging takes about four minutes after power is
off. Touching the Outdoor unit controller before discharging may cause an electrical shock.
13.1.10 Additional advises
When disassemble the controller or the front panel, turn off the power supply.
When connecting or disconnecting the connectors on the PCB, hold the whole housing, don’t pull
the wire.
There are sharp fringes and sting on shell. Use gloves when disassemble the A/C units.
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