Daikin AT12BV1LS Pocket Manual page 34

Si10-417
5.1.6 Shutter Drive Motor / Shutter Limit Switch
Abnormality
Remote
Controller
Display
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Trouble
shooting
Check No.3
Refer to
P.150
Service Diagnosis
C7
The shutter open / close performance is detected by the
limit switch attached on its structure. In this way, the
shutter drive motor and the shutter limit switch are
checked for failure.
When the shutter is open, the limit switch is closed.
Shutter drive motor defective
Shutter limit switch defective
Shutter itself deformed (warped)
Shutter's sealing material too thick
Detection error by broken relay harness or
disconnected connector
Detection error due to defective PCB (2)
Foreign substance in blow port
Be sure to turn off power switch before connect or
Caution disconnect connector, or parts damage may be occurred.
Turn off the power.
Foreign
substance in the shutter
structure?
NO
Check No. 3
Check the limit switch
continuity.
Limit
switch on power?
YES
Open the shutter and turn on
the power.
Shutter closed?
YES
2A
Troubleshooting
YES
Remove such
substance.
NO
Replace the limit
switch.
NO
A
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