Daikin FTXS09HVJU, Service Manual

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Troubleshooting SiUS04-904
Service Diagnosis 111
4.9 DC Fan Lock
Remote
Controller
Display
E7
Method of
Malfunction
Detection A fan motor or related error is detected by checking the high-voltage fan motor rpm being detected
by the Hall IC.
Malfunction
Decision
Conditions

The fan does not start in 30 seconds even when the fan motor is running.

The system is shut down if the error occurs 16 times.

Clearing condition: Continuous run for about 5 minutes (normal)
Supposed
Causes

Fan motor breakdown

Harness or connector disconnected between fan motor and PCB or in poor contact

Foreign matter stuck in the fan
Troubleshooting
Check No.15
Refer to P.151
(R7139)
Caution
Be s u re to t u rn off the po w er s w itch b efore connecting or disconnecting
the connector, or parts damage may occ u r.
YES
YES
N O
YES
N O
N O
Get started.
Check No. 15
Check the o u tdoor u nit PCB rpm
p u lse inp u t.
T u rn off the po w er and
reconnect the connector.
Remo v e.
Replace the o u tdoor u nit fan
motor.
Replace the o u tdoor u nit
PCB.
Fan motor
connector disconnected?
Foreign matters
in or aro u nd the fan?
P u lse signal
inp u tted?