TROUBLESHOOTING
Rot iss erie ▪ O p er a tor’ s Ma n u al ▪ M N- 3940 4 ▪ Rev 1 ▪ 1/19
84
E-80 Control settings have been reset to factory defaults
because EEPROM checksum was incorrect.
Software has new features installed (post
updated, this may be expected after the first
restart and is normal).
Continuous E-80 may be failing EEPROM.
E-83 EEPROM is not responding. Failing EEPROM.
E-84 User options have been reset to factory defaults
because user options EEPROM checksum was
incorrect.
Software has new features installed (post
updated, this may be expected after the first
restart and is normal).
Continuous E-84 may be failing EEPROM.
E-94 Communications has not occurred for 4 attempts. Electrical noise.
Communication cable not properly seated, not
plugged in.
E-109 N7 or N9 high-limit is open. Unit is too hot, and N7 is legitimately open.
Water heater is too hot, and N9 is legitimately
open Wiring to N7 or N9 is incorrect.
Board issues reading N7 or N9 input switch.
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