If you are replaceing the 230954 Control Board because your Glow Bar will light up but your Gas Valve will not open and you do not have an Original Equipment Glow Bar in your heater, then your problem will probably be the wrong Glow Bar has been installed and your Control Board is probably ok.
The 230954 Control Board must have the 520738 Hot Surface Ignitor to operate properly.
The 230954 Control Board was also used on the following models:
DCF30M
DCF30GC
DCF-30
DCF-30C
DCF30 GC
The 230954 Module Board has a slotted connector that pushes on to the board. This style board will be located at the rear of the heater and the heater will need to be removed to replace this module control board.
The 230954 Module Board is an open style circuit board and all the circuits will be visible.
The manufacture of the Dynavent and Suburban heaters made a running change of the 230954 to the new Ram style control board. The Ram style board has a cover of the circuits and will need to be replaced with the new style RAM board part number 520899 with either a 520895 wire harness or a 520896 wire harness.and does not have a cover.
The RAM board will have a 12 pin connector and a cover on the model board you will need part numbers 520899 and 520896.