
This blog is to assist the RV owner in basic repairs on any RV on the market in the USA. Email us at rvrepair101@doneritemfg.com





Let me tell you, if you are one of the RV owners that think all you need to do is just use a blow-out plug on your RVs water system you are sorely mistaken. First of all your RVs water system is only rated for 55-65psi MAX!!! Have you looked at the gauge on your air compressor lately? Is it set to 55psi? No... It is more likely set to around 100 to 150 psi, THAT IS WAY TOO MUCH. Yes blowing out the lines might work but what you are forgetting is that inside a tube when you have water in it and blow air through the tube all your going to do is spread out the water. Just as soon as you remove the air pressure the water will run back down to the lowest point in the line. Take for example, put some liquid in a bendable straw, bend the straw into a 90 degree angle straight up toward the ceiling, now blow. What happened? You cleared some of the liquid out of the straw but not all, right? Well that's what happens with your RV you can get some or maybe even most but you will not get all. Now when the water freezes it happens very slowly so all the water in the elbow pipe fitting gets solid and then once it gets solid along its journey to ice it expands and in turn breaks the fitting. Now just so you know the fittings are more likely to break than the pipe depending on what you have in your RV. (Did You Know? If your plumbing tube is GRAY you have the old polybutylene the not good stuff there has been recalls on this, if your tube is Opaque, Blue, or Red you have pex that is the good stuff.) Now that you have proven to your self that blowing the lines won't get all the water out, your forgetting an important part of the system, you can open all the faucets hot and cold sides but its hard to blow out the toilet valve because your outside putting the air on the blow-out plug you can't hold the toilet valve open. Now I know some of you are going to say I will beat the system and have someone hold the toilet valve open for me while I put the air on it. Well smart thinking you just fixed the problem and prevented your self from freezing, there is no reason for you to continue to read this article you have it all figured out. Now for the rest of you that want to prevent the problem of freeze up. It is very simple. WINTERIZE the entire system including the toilet. Now it's easier than you may think. When I was in the business I built a winterizing system. You can do the same, I will give instructions later on how to build. Some RVs have a kit on the unit that will use the pump to do the work for you.

In the realm of RV refrigerators Dometic and Norcold are the leaders. I have worked on both and really like most features of both designs. We'll begin with the Dometic units- As you know you have many choices in the realm of RV food storage. Two way (LP Gas and AC) Three way (12v DC, LP Gas, and AC) single door no freezer, single door with small freezer, double door freezer on top, side by side, side by side with ice maker and so on. I like the aesthetics of the Dometic models better than Norcold, however I like and believe the Norcold is a better refrigerator due to there ease of use and "repairability". The Norcold seems to cool better than the Dometic here in Eastern North Carolina's humid climate. One to stay away from is the Dometic reefers with the automatic temp control. Don't think this will be one less thing you have to deal with because it will be one more thing you will have to deal with. Now there are ways to adjust the temp on these models- but it isn't fun. If you have the choice: stay away. There are many things you can do or have done to help prolong the life and function of your fridge regardless of brand. For example, you can keep the doors open if the unit is not on and cooling. Keep your door seals clean and wash often with bleach water. On the outside of the RV (where your dreaded reefer access door is) remove the door outside, you can use a coin or a screw driver to turn the tabs in the locks 1/4 turn to remove the cover. Now inspect the black coil of pipe in this compartment (this is called the cooling unit on every RV style reefer), if you see rust clean with a wire brush and spray with paint (MAKE SURE YOU TURN OFF THE UNIT AND THE LP GAS BEFORE SERVICING ANYTHING IN THIS COMPARTMENT) no open flames when spraying paint. Then look at any wiring and look for corrosion, if you find any you will need to clean or have an RV repair person come and clean it for you. Now look at the wood structure of the reefer cabinet- do you see any wood rot or water damage? If yes then that will need to be repaired asap you can do this yourself or get an RV repair person to do this for you. If you look to the right you will see the metal burner cover it should be snapped in or held in by a Philips screw driver, remove the cover and inspect this burner. Again make sure the unit is off and the LP Gas is turned off at the tank(s). If you see rust you may need to remove the burner and clean it out, when the rust falls it can fall into the burner and clog it up. These are just a few small things you can do yourself to help keep your RV reefer on track. If you have questions about this or any other RV item please feel free to email me at rvrepair101@doneritemfg.com