ALERT: Ice Maker Solenoid floods coach
FYI- Turn off water to coach when leaving coach for any extended time. Check solenoid regularly to insure it is not leaking. Consider a Plan 'B' to route flooding water to the refrigerator drain which dumps out under coach or take your chances.
We secured a spot in an RV park midway to our destination. We plugged into shore power and ran the air conditioners since we had an onboard pet and it was 106 F in late June. Since we were departing early in the morning we did not level the coach and the coach leaned slightly to the drivers side of the coach. We departed for several hours.
Upon our return we found water cascading down the back of the Dometic NDR-1290 refrigerator from the ice maker and the fresh water tank was less about 30 gallons of water. Water was entering and departing the rear of the coach from numerous locations... A mess was an understatement.
Back at our homebase, this is what I learned as I dug into the details of the ice maker system: Solenoids are not suppose to leak and is electronically called on by the ice maker for 3 seconds to open and deposit 6 oz water in the ice maker mold, then turn completely off. If a solenoid leaks, it can slowly deposit water throught the back of the freezer in the distribution tube to the ice maker. In our case, the tube solidly filled with ice. With this tube filled with ice, the next cycle the solenoid went from leaking to sticking fully open. The water excaped down the back of the refrigerator with this full flow since the tube was frozen shut.
Learning that the soleoid most likely was the problem I purchased the Eaton- part #3108706.270 for $25 from a good Internet source. I went through numerous tests to insure the ice maker timer was not the problem. I connected the new solenoid directly to a city water source for the input side and used another 1/4" line from the output side of the solenoid hanging it out the side of the external refrigerator door opening for some of my tests. I learned the new replacement ice maker costs $200 with shipping & tax from Dometic and was pleased to establish the solenoid was the problem.
As a Plan 'B'.... If or when our new solenoid repeats the same pattern of defective behavior, I used a flexible thin cutting board sheet, metal tape, a funnel, and connections to route any potential future cascades caused by a defective soleniod into the refrigerator condensation / defrosting freezer water drain line that dumps below the coach. SEE ATTACHMENTS- Plan 'B' and solenoid.
I share this learning opportunity because if we experience this ice maker solenoid failure, the odds are all Alpine Coach owners with the Dometic NDR-1290 with ice maker may experience this failure or some version of failure.
FYI- the new replacement ice maker from Dometic is Model 3313470.080.
2003 Alpine Coach
2009 Jeep Wrangler 4-Dr Rubicon