– 200 –
Yes
POWER CIRCUIT
PHENOMENON 1 <ROTATION SPEED DOES NOT INCREASE>
Is the DC voltage at least 350V?
Is the OVL lamp lit?
If the lamp is lit, it does not
indicate fault, but the unit is
overload status.
If abnormality conitinues,
replace the ACT module.
Recheck cord, etc. of the ACT
module. If they are disconnected,
connect them securely.
Overvoltage defect : ACT module faulty
(15 times blinking)
HOW TO CHECK POWER MODULE
Checking power module using tester
Set tester to resistance range (
×
100)
If indicator does not swing in the following conductivity check, the power module is normal.
(In case of digital tester, since built-in battery is set in reverse direction, + and - terminals are reversed.)
If inner circuit of power module is disconnected (open), the indicator of tester will not swing and this may
assumed as normal. In this case, if indicator swings when + and - terminals are connected in reverse of
diagram below, it is normal. Furthemore, compare how indicator swings at U, V and W phases. If indicator
swings the same way at each point, it is normal.
CAUTION
!