A1 Indoor Unit: Pc Board Defect - Daikin RXYQ96PYDN Service Manual

SiUS34-801A_b
A1
3.2 Indoor Unit: PC Board Defect
A1
Remote
Controller
Display
Applicable All indoor unit models
Models
Method of
Check data from E²PROM.
Malfunction
Detection
Malfunction
When data could not be correctly received from the E²PROM
Decision E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power supply is
turned off.
Conditions
Supposed
Causes
Troubleshooting
Troubleshooting
Defect of indoor unit PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Turn power supply OFF, then
power ON again.
Does
the system return
to normal?
NO
Troubleshooting by Indication on the Remote Controller
YES
The indoor unit PC board is
normal.
External factor other than
malfunction (for example,
noise etc.).
Replace the indoor unit PC
board.
(V2777)
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