Troubleshooting Si04-402A
80 Service Diagnosis
4.6 Front Panel Open / Close Fault
Remote
Controller
Display
C7
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
The system will be shut down when the error occurs twice.
Supposed
Causes
Malfunction of the reduction motor
Malfunction or deterioration of the front panel mechanism
Malfunction of the limit switch
Troubleshooting
Note: You cannot operate the unit by the remote controller when the front panel mechanism breaks
down.
<To the dealers: temporary measure before repair>
1. Pull the plug out or turn the breaker off.
2. Remove the decorative plate.
3. Remove the slot-in panel.
4. Put the plug in or turn the breaker on.
(Wait until the initialization finishes.)
5. Operate the unit by the indoor unit ON/OFF switch.
Restart and check
the movement.
YES
YES
YES
YES
Remove the front panel
and check the movement.
Does it move?
Does it open / close
fully?
Restart.
Does the error code
reappear?
Does it move?
NO
NO
NO
NO
Replace the reduction motor.
Replace the assembly of the
front panel mechanism.
H
Check the movement of the
right and left separately by
hand.
It is supposed such as
deformation of the panel or
stuffed dust.
Find out the cause.
Replace the limit switch.
(R3313)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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