GVZC20 Service Manual

TROUBLESHOOTING
109
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AVOID CONTACT WITH THE CHARGED AREA.
•NEVER TOUCH THE CHARGED
AREA BEFORE CONFIRMING THAT THE RESIDUAL
VOLTAGE IS 50 VOLTS OR LESS.
1. S
HUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR 10 MINUTES.
2. M
AKE SURE TO TOUCH THE EARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY (TO PREVENT
FAILURE OF THE PC BOARD).
3. M
EASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION USING A VOM WHILE PAYING ATTENTION NOT TO
TOUCH THE CHARGED AREA.
4. I
MMEDIATELY AFTER MEASURING THE RESIDUAL VOLTAGE, DISCONNECT THE CONNECTORS OF THE OUTDOOR UNIT’S FAN
MOTOR. (IF THE FAN BLADE ROTATES BY STRONG WIND BLOWING AGAINST IT, THE CAPACITOR WILL BE CHARGED, CAUSING
THE DANGER OF ELECTRICAL SHOCK.)
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C+
C-
Capacitor Voltage