Troubleshooting - SkyAir Indoor Unit Si18-201
252 Service Diagnosis
2.6 Troubleshooting Detail
2.6.1 Failure of Indoor Unit PC Board
Remote
Controller
Display
A1
Indoor Unit LED
Display
Refer to p.251
Applicable
Models
All indoor unit models
Method of
Malfunction
Detection
Check data from E²PROM.
Malfunction
Decision
Conditions
When data could not be correctly received from the E²PROM
E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power
supply is turned off.
Supposed
Causes
"
Failure of PC board
Troubleshooting
Turn the power supply off
once and then back on.
YES
Normal reset?
NO
Could be outside cause (noise,
etc.)
other than malfunction
Indoor unit PC board
replacement
(MF011)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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