SiMX042215E
Troubleshooting
Part 6 Service Diagnosis
73
Reference
4.13 DC Fan Lock
Error Code
E7
Method of Error
Detection
An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC.
Error Decision
Conditions
The fan does not start in about 15 ~ 60 seconds (depending on the model) even when the
fan motor is running.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 5 ~ 11 minutes without any other error
Supposed
Causes
Disconnection of the fan motor
Foreign matter stuck in the fan
Defective fan motor
Defective outdoor unit PCB
Troubleshooting
Check No.16
Refer to P.95
(R20416)
Caution
YES
YES
N
O
YES
N
O
N
O
YES
N
O
T
u
rn on the po
w
er.
Rotate the fan.
T
u
rn off the po
w
er and
reconnect the connector.
Remo
v
e the foreign
matters.
Replace the o
u
tdoor fan
motor.
Replace the o
u
tdoor
u
nit
PCB (main PCB).
Replace the o
u
tdoor fan
motor.
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
Fan motor connector
disconnected?
Foreign matters in or
aro
u
nd the fan?
Fan rotates
smoothly?
Check No. 16
Check the rotation p
u
lse inp
u
t on
the o
u
tdoor
u
nit PCB (main PCB).
P
u
lse signal generated?
