Troubleshooting by Indication on the Remote Controller ESIE09-08B
146 Troubleshooting
3.13 “E1 ” Indoor Unit: PC Board Defect
Remote Control
Display
E1
Subcode 3
Applicable
Models
All indoor units
Related to: R-134a compressor
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
Defect compressor main PC board (A4P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect
connector, or parts damage may be occured.
Turn off the power once and
turn on again.
Return to normal?
YES
External factor other than
malfunction (for example,
noise etc.).
Replace the indoor unit
compressor main PC Board
(A4P).
NO
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