Troubleshooting
SiUS041829E
78
Part 6 Service Diagnosis
Note
4.6 Front Panel Open/Close Fault
Error Code
C7
Error Decision
Conditions
If the error repeats, the system is shut down.
Supposed
Causes
Defective reduction motor
Malfunction or deterioration of the front panel mechanism
Defective limit switch
Troubleshooting
You cannot operate the unit by the remote controller when the front panel mechanism breaks down.
<To the dealers: temporary measure before repair>
1. Turn off the power.
2. Remove the front panel.
3. Turn on the power.
(Wait until the initialization finishes.)
Operate the unit by the indoor unit
ON/OFF
switch.
YES
YES
YES
YES
NO
NO
NO
NO
Replace the harness and
red
u
ction motor.
Replace the assembly of the
front panel mechanism.
Check the movement of the
right and left separately by
hand.
Replace the assembly of the
front panel mechanism.
It is s
u
pposed s
u
ch as
deformation of the panel or
st
u
ffed d
u
st.
Find o
u
t the ca
u
se.
Replace the limit switch.
(R17249)
Caution
Does the front
panel move?
Does the front
panel mechanism
move?
Does the front
panel open/close f
u
lly?
Restart. Does the
error code reappear?
Restart and check the
movement.
Remove the front panel and
check the movement.
Be s
u
re to t
u
rn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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