I have a Climatemaster Tranquility 30 Digital (TE) Series IOM with ATC32U03 communicating thermostat. I has worked perfectly for 4 years. The modulating valve works well but now is passing a small amount of water through, even when closed. Until I replace the modulating valve, I installed an inline 24VAC slow opening & closing valve between the furnace and the dump well (on the water leaving the furnace). Then, on the DXM2 board, I set the S2 dip switches in the following configuration: #1 – ON, #2 – OFF,#3 – ON. All other dip switches on S2 are ON. Next, I wired the electric valve to N0 1 and COM on ACC1. This setup should open the valve 60 seconds before the compressor starts. However, the electric valve would not activate at all. I had to manually open the valve when the compressor started. I used a multimeter to check for voltage at NO1 and COM as well as NC1 and COM and found none. I tried the same for ACC2 relay, using the ON, OFF, ON for dips 4,5 & 6 and wiring the valve to N02 and COM. Same thing; no voltage there or on NC2 and COM either. I’ve read all information that I can find but am now stuck. I hope it’s a setting rather than the board. Thanks for any advice.