-1-
[Bold]
numbers in the description below correspond to the item numbers in the parts list and exploded
assembly diagram for the Model H 45MEY,
{Bold}
numbers to those for the Model H 45ME, and
<Bold>
numbers to the item numbers for both models.
1. Troubleshooting and corrective action
Perform troubleshooting and take a necessary corrective action according to the table below if there is a
problem that cannot be solved by the corrective action described in the handling instructions.
Problem
Cause
Check
Corrective action
All the four LEDs
of the display
lamp are flashing.
• Broken Controller
[53]{50}
.
• No check needed.
• Replace the Controller
[53]{50}
with a new one.
Three LEDs of
the display lamp
are flashing.
• Mix-up of three
internal wires of
Stator Sensor PCB
Set
[45]{42}
and
Controller
[53]{50}
• Check the heat-shrinkable
tube colors (red, black, and
white) of internal wires
connecting the Stator Sensor
PCB Set
[45]{42}
and
Controller
[53]{50}
.
• Correctly connect internal
wires of the Stator
Sensor PCB Set
[45]{42}
and Controller
[53]{50}
by their tube colors (red,
black, and white).
• Broken Controller
[53]{50}
• Check the state of the
Controller
[53]{50}
connector.
• Replace the Controller
[53]{50}
with a new one.
• Broken Rotor
[102]{99}
• Check the built-in magnet of
the fan for breaks.
• Replace the Rotor
[102]{99}
with a new
one.
Two LEDs of the
display lamp are
flashing.
• Broken Controller
[53]{50}
• No check needed.
• Replace the Controller
[53]{50}
with a new one.
One LED of the
display lamp is
flashing.
• Improperly
connected
connector cable of
the Stator Sensor
PCB Set
[45]{42}
• Check the plug-in state of the
connector cable.
(See “Reassembly of the
power supply unit” on page
11.)
• Firmly plug the connector
cable.
• Broken Stator
Sensor PCB Set
[45]{42}
• When the connector cable is
not defective
• Replace the Stator
Sensor PCB Set
[45]{42}
with a new one.
• Broken Controller
[53]{50}
• Check the plug-in state of the
Controller
[53]{50}
connector.
• Replace the Controller
[53]{50}
with a new one.
• Broken Rotor
[102]{99}
• Check the built-in magnet of
the fan for breaks.
• Replace the Rotor
[102]{99}
with a new
one.
TROUBLESHOOTING GUIDE
