12-8
TROUBLESHOOTING
SM WNGDCI 1-E.1 GB
12.6
Precaution, Advise and Notice Items
12.6.1
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
naked lead wire and don t insert finger, conductor or anything
'
'
t touch the
else into the controller when power is on.
12.6.2
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.
12.6.3
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,
dont pull the wire.
• There are sharp fringes and sting on shell. Use gloves when disassemble the A/C
units.
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