Oh no, it won’t switch. The weather is getting warmer and it is time to adjust the Dometic reverse cycle unit from heat to air conditioning, except it was stuck in heat mode. The unit is under all the bedding and cushions in the front cabin, not so easy to access. Once the defective unit was available, Steve checked the solenoid valve which allows the reversing valve to move. It appeared to be working. Next he tried to manually switch the reversing valve from heat to cool. It was a no go, so the heavy unit had to be pulled. Once on deck, we carefully slid the unit across a board to the dock and into a wagon. Loaded it in the car and drove it to a factory authorized Dometic dealer. Now, we wait...will the repair cost be worth saving the unit or will we have to buy a new one? Hopefully the decision will be made and we will have a unit installed before the weather gets warmer and we get hot and sweaty....