This is a computer board for the 45H-NG/45HI-NG (outdoor or indoor mount, natural gas) with serial numbers from August 2021 to present. All wire connections fit into this board. It is the main programming source of your water heater.
Customer assumes all liability when purchasing replacement parts.
NOTE: This board is for 45 Series Natural Gas Water Heaters with serial numbers from August 2021 to present.
For computer boards that are 2021 or older, you will also need to purchase 45 Series Display in order for the board to work.