09/03
2-36
DC 3535/2240/1632, WC M24
3-352, 3-353
Initial issue
Status Indicator RAPs
3-352 IOT-ESS Communication Failure 12
Controller received check code error (wrong message packet length in received packet).
Procedure
Switch the power off then on. The problem continues.
YN
Return to Service Call Procedures.
Reinstall the software. If the problem continues, check the MCU PWB connectors (P/J Loca-
tions, Figure 15). DC 3535 only: Replace the VSEL PWB (PL 13.1). If the check is OK, replace
the MCU PWB (PL 13.1).
3-353 IOT-ESS Communication Failure 13
Controller received check code error (received packet checksum error).
Procedure
Switch the power off then on. The problem continues.
YN
Return to Service Call Procedures.
Reinstall the software. If the problem continues, check the MCU PWB connectors (P/J Loca-
tions, Figure 15). DC 3535 only: Replace the VSEL PWB (PL 13.1). If the problem persists,
replace the MCU PWB (PL 13.1).
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