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Modulex E8 Controller and BCM
Operations and Maintenance Manual
Communication Fault
E 90
E8: Address 0 and 1 on BUS. IDs BUS 0 and 1 may not bee used
simultaneously
E8: BUS ID used. The set BUS ID is already in use by another device
Internal Fault
E 81
E8: EEPROM error. The invalid value has been replaced with default value
(Check parameter values)
10.2.2 BCM (Boiler Communications Module) Fault Codes
The table below shows how to interpret the displayed fault code, while Table 10-3, on the next
page, shows a description of the fault and troubleshooting tips associated with the BCM.