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09/03

2-37

DC 3535/2240/1632, WC M24

3-354, 3-355

Status Indicator RAPs

Initial issue

3-354 IOT-ESS Communication Failure 14

Controller received check code error (UART parity error).

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).

3-355 IOT-ESS Communication Failure 15

Controller received check code error (UART framing error).