Daikin E Series, Service Manual

Page: 376 / 453

SiAU18-715 Troubleshooting for Outdoor Unit
Troubleshooting 363
7.5 Malfunction of Outdoor Unit Fan Motor
Remote
Controller
Display
E7
Applicable
Models AII outdoor unit models
Method of
Malfunction
Detection Malfunction of fan motor system is detected according to the fan speed detected by Hall IC
when the fan motor runs.
Malfunction
Decision
Conditions
„
When the fan runs with speed less than a specified one for 6 seconds or more when the fan
motor running conditions are met
„
When malfunction is generated 4 times, the system shuts down.
Supposed
Causes
„
Malfunction of fan motor
„
The harness connector between fan motor and PCB is left in disconnected, or faulty
connector
„
Fan does not run due to foreign matters tangled
„
Clearing condition: Operate for 5 minutes (normal)
Troubleshooting
Check No.03
Refer to P.404
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Connector of
fan motor is
disconnected.
Is there any
obstacle around the
fan?
Are the
resistances
between pins above
judgment?
Can the fan
be turned smoothly
with hand after disconnect
the connector of fan
motor?
Connect the connector.
Remove the obstacle.
Replace outdoor unit PC
board.
(Q0554)
NO
NO
YES
YES
YES
Replace the fan motor of
outdoor unit.
NO
Replace the fan motor of
outdoor unit.
NO
YES
Check No.03
Check on connector of fan
motor (Refering to
information on page 404)