A.O. Smith 110-310-510 – ERROR CODE 701 [510 (T-D2)], ONE FLASH/70 [110 (T-KJR2), 310 (T-K4)] COMPUTER BOARD FAULT

COMPUTER BOARD FAULT
1) Turn off the power supply.
2) Check all wire connections and make sure they are secure and free of burns or cuts.
3) Inspect the PCB for connection/breakage of wires and/or burn marks on the board.
4) Verify that supply gas pressure is within specifications.
5) Contact the Technical Service Department for further assistance.