| Dometic refrigerator condensate hose [message #354605] |
Mon, 11 May 2020 13:44  |
 |
Richard RV
Messages: 631
Registered: July 2012
Location: Full-timer for 12 years, ...
Karma: -17
|
Senior Member |
|
|
I've been trying to diagnose my Dometic refrigerator's increasing interior temperatures. I'm in Phoenix and the coach has been baking in the sun, so some rise in temperature is expected. In my searches I've run across numerous references to a couple of condensate drain hose related issues.
The first is whether the drain hose has what Dometic calls a "check valve" inserted in the end of the hose. Shown at the bottom of page 23 in the diagnostic manual:
https://fourwheelcampers.com/NewDometicRefrigeratorManual.pdf
It's not really a check valve allowing one way flow, it's simply a plug that has some holes drilled in it. My refrigerator did not come with one and I've been using it without one for a few years.
The second is whether the refrigerator condensate house has a loop or S-curve in it to hold water and act similarly to a P-trap.
My questions:
- Does your Dometic refrigerator have such a condensate line check valve/plug, and/or in your experience are they standard?
- Do you loop your condensate line or have you seen looped lines?
- If you added the plug or loop did that actually have an effect on refrigerator cooling?
Thanks in advance.
Richard
'77 Birchaven TZE...777;
'76 Palm Beach under construction;
‘76 Edgemont waiting its turn
|
|
|
|
| Re: Dometic refrigerator condensate hose [message #354607 is a reply to message #354605] |
Mon, 11 May 2020 15:17  |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
|
Senior Member |
|
|
Richard, My Dometic, which I installed, has a condensate hose but no check valve in the end. I ran it to a plastic tray, like a small baking pan, where the water ends up and is evaporated off from there. I never thought of using a p-trap to prevent warm air from traveling in the reverse direction and back up the hose. It sounds like a good idea.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
|
|
|
|
| Re: Dometic refrigerator condensate hose [message #354609 is a reply to message #354607] |
Mon, 11 May 2020 15:26 |
|
Richard RV
Messages: 631
Registered: July 2012
Location: Full-timer for 12 years, ...
Karma: -17
|
Senior Member |
|
|
Hey Ken. Yeah, it's one of those (many) things that just seemed so simple I never gave it any thought. Apparently some of the symptoms are inability to maintain suitable refrigerator temperatures in hot weather, and excessive frost build up. Somebody on one forum said they coiled the loop in Summer and took it out in Winter so the trapped water wouldn't freeze and block the drain line.
Simple enough, just wondering if it's a known thing - I've never seen it, or maybe just never noticed it.
Richard
'77 Birchaven TZE...777;
'76 Palm Beach under construction;
‘76 Edgemont waiting its turn
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
