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09/03

2-31

DC 3535/2240/1632, WC M24

3-341, 3-342

Status Indicator RAPs

Initial issue

3-341 IOT-ESS Communication Failure 2

Controller received check code error (wrong sequence number in sent message packet).

Procedure

Switch the power off then on. The problem continues.

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).

3-342 IOT-ESS Communication Failure 3

Controller received check code error (wrong packet number in sent message packet).