Malfunction Of Outdoor Unit Fan Motor; E7" Malfunction Of Outdoor Unit Fan Motor - Daikin RXYSQ4-5-6PA7V1B Service Manual

SiBE34-802
E7
" "
3.22

Malfunction of Outdoor Unit Fan Motor

E7
Remote
Controller
Display
Applicable RXYSQ4~6PA
Models
Method of Malfunction of fan motor system is detected according to the fan speed detected by hall IC
when the fan motor runs.
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Troubleshooting
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.
Malfunction of fan motor
The harness connector between fan motor and PC board is left in disconnected, or faulty
connector
Fan does not run due to foreign matters tangled
Clearing condition: Operate for 5 minutes (normal)
Open phase L1 or open phase N.
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Has the
voltage between L1
and N on the power supply terminal
board X1M fallen within the range of
220 to 240V±10%
(50 Hz)?
YES
Connector
of fan motor is
disconnected.
NO
Is there any
obstacle around
the fan?
NO
Can the fan
be turned smoothly
with hand after disconnect
the connector of
fan motor?
YES
Check No. 3
Check on connector of fan
motor (Refer to information
on P.220)
Are the
resistances between pins
above judgment?
YES
Troubleshooting by Indication on the Remote Controller
NO
YES
YES
Has either the fuse
F4U on the control PC board
NO
(A1P) or the fuse F1U on the
inverter PC board (A2P)
blown out?
NO
Has either the fuse
F4U on the control PC board
NO
(A1P) or the fuse F1U on the
inverter PC board (A2P)
blown out?
NO
Correct the power supply
voltage.
If L1 and N phases are
open, replace the switch
box.
Connect the connector.
Remove the obstacle.
YES
If the F4U has blown out,
replace the fuse.
If the F1U has blown out,
replace the inverter PC
board assy.
Replace the fan motor.
YES
If the F4U has blown out,
replace the fuse.
If the F1U has blown out,
replace the inverter PC
board assy.
Replace the fan motor.
Replace outdoor unit PC
board.
169