3. The water flow servo valve has failed to close during the bath fill function. Immediately turn off the water flow and discontinue the bath fill controller. 4. WARNING: Turn off the electrical, gas and water supply to the water heater before proceeding. Replace water flow control servo. Connector (Plug D4): 5. Measure voltage of Water Flow Control Device on P.C. board at a. Connector red wire (turns black before getting back to the board) pin #30 & pink wire pin #20 “D” 44 ~ 52Ω. – b. Connector white wire pin #16 & blue wire pin #14 44 ~ 52Ω. “D” – c. Connector grey wire (turns black before getting to board) pin #30 & orange wire pin #12 = “D” 12 ~ 14 VDC, Code 70 P.C. Board Fault
3. The water flow servo valve has failed to close during the bath fill function. Immediately turn off the water flow and discontinue the bath fill controller. 4. WARNING: Turn off the electrical, gas and water supply to the water heater before proceeding. Replace water flow control servo. 5. Measure voltage of Water Flow Control Device on P.C. board at Connector (Plug D4): a. Connector “D” red wire (turns black before getting back to the board) pin #30 & pink wire pin #20 – 44 ~ 52Ω. b. Connector “D” white wire pin #16 & blue wire pin #14 – 44 ~ 52Ω. c. Connector “D” grey wire (turns black before getting to board) pin #30 & orange wire pin #12 = 12 ~ 14 VDC, Code 70 P.C. Board Fault
2018%20N-Series%20Water%20Heater%20Knowledge%20Base%2004062018GW%20(Use%20this%20Copy).docx