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09/03

2-32

DC 3535/2240/1632, WC M24

3-343, 3-345

Initial issue

Status Indicator RAPs

3-343 IOT-ESS Communication Failure 4

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

3-345 IOT-ESS Communication Failure 5

Controller received check code error (sent packet checksum error).