Dometic3312022 Duo Therm Electronic Board

I originally thought I had a bad board which is why this review is late. After looking at the schematic in detail I realized I had one lead out of place. Is you use this board the terminals are numbered on the board T4 etc. These numbers match the schematic in the A/C unit. The only difference I found was two wires said to be black were actually purple. Once I changed the lead the system has worked as it should. My symptoms prior to installing the new board were that the compressor would shut down but fan would keep running, compressor would not come back on. If I shut the unit down and turned it back on then the compressor would come back on until thermostat turned it off again. Seemed to me to be an obvious relay problem (usually fused contacts)

A/C compressor and blower not coming on when in cool mode. You could turn fan on all three settings in fan mode(manually) The hour glass would just stay on when in cool mode. (No fan or noise)Replace board and fixed problem. Kinda difficult to replace if not used to this kinda repair.Testing the board I found:All the 4 small relays tested bad with meter.Coil side worked (400ohm)but load side contact was stuck or worn. No ohms when activated.

Worked to fix our A/C problem on the RV - right out of the box. I was skeptical, but once installed, the A/C came on & is now doing it's job keeping the RV cool. Fantastically quick shipping!

Matched original part. Works as it should. Easy swap out of part

Just the part I needed

Did not work for my dometic a/c due to having a 5 button thermostat. It would have been very helpful and saved me this purchase had it been clearly identified for penguins with a 10 button thermostat in the description.