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Troubleshooting (OP: Schedule Timer) Si38-606
188 Troubleshooting
4.2
M1
PC Board Defect
Remote
Controller
Display
M1
Applicable
Models
Schedule timer
Method of
Malfunction
Detection
Detect an abnormality in the DIII-NET polarity circuit.
Malfunction
Decision
Conditions
When + polarity and - polarity are detected at the same time.
Supposed
Causes
Defect of schedule timer PC board
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Reset power supply.
Does the
system return to normal?
YES
NO
External factor other
than equipment
malfunction (noise etc.)
Replace the schedule
timer.
(V2837)
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