Frank C Posted August 14, 2022 Share Posted August 14, 2022 Not a Truma problem but the issue did manifest itself as very low HOT water flow at all faucets. Problem of low hot water flow was the same whether on city water or using pump & fresh tank. COLD water flow was good at all faucets. And I’ve done the decalcification/cleaning process annually. Did some troubleshooting and was initially thinking it was a Truma problem because flow to the hot side of all the faucets was good if I bypassed the Truma at the bypass valve on the Truma cold water inlet. Fearing a very expensive Truma repair, I dug a little further. Opening the Truma drain lever and removing the Truma screen filter, and turning the bypass valve back to normal operating position, and I saw very little flow emptying out of the Truma drain. There really isn’t much inside the Truma on the inlet at that point to even get clogged up, it’s just a direct port into the screen filter, so low flow draining out pointed back to a problem at the plumbing going into the Truma. I removed the bypass valve and found the rubber seal inside had degraded and swollen (see photo), restricting the flow in the normal position. Found a CAMCO replacement on Amazon that’ll be here tomorrow. Hopefully the seal on this CAMCO one holds up better than the original one (different valve manufacturer). I really think a lot of these plumbing components aren’t tested with the chemicals using for RV maintenance like the anti-freeze winterizing solution, or vinegar/water or bleach/water sanitizing solutions, leading to issues with degradation of the seals. A pretty easy replacement of the valve but I’m also going to use this opportunity to redo the cold inlet and hot outlet plumbing connections on the back of the Truma to change to stainless braided flexible supply lines. Not a fan of the rigid plastic connections used by Oliver initially in those locations. Some owners have had the plastic hot water PEX fitting break at the brass TEE on the Truma outlet. With all the bouncing down the road, and thermal expansion and contraction when using the Truma, I want flexible connections there like some of those other owners have upgraded to. Camco bypass valve link to Amazon: https://a.co/d/eGqkhrA 7 5 Link to comment Share on other sites More sharing options...
Jim and Chris Neuman Posted August 14, 2022 Share Posted August 14, 2022 Thank you for the heads-up! 2 Link to comment Share on other sites More sharing options...
Galway Girl Posted August 14, 2022 Share Posted August 14, 2022 You might also consider securing the backof the water heater to the frame with a strap or L brackets. My water heater had an issue which included a fire, and one of the requested steps upon repair from Truma was to firmly attach the back of the water heater down to the frame it's sitting on. (The back of the Truma is sitting on a frame member for the trailer.) After about 3 months, I heard back that the water heater I had was found to have an improperly torqued internal gas connection from the Truma factory. They told Oliver Service that upon tear down they found the torque issue was linked to a manufacturing line situation where their Torque tool wasn't properly calibrated. Not sure what batch of units that impacted but they eventually fully refunded my replacement unit. 3 4 1 2019 Elite II (Hull 505 - Galway Girl - August 7, 2019 Delivery) Tow Vehicle: 2021 F350 King Ranch, FX4, MaxTow Package, 10 Speed, 3.55 Rear Axle Batteries Upgrade: Dual 315GTX Lithionics Lithiums - 630AH Total Inverter/Charger: Xantrex 2000Pro Travel BLOG: https://4-ever-hitched.com Link to comment Share on other sites More sharing options...
Frank C Posted August 15, 2022 Author Share Posted August 15, 2022 16 hours ago, Galway Girl said: You might also consider securing the backof the water heater to the frame with a strap or L brackets. My water heater had an issue which included a fire, and one of the requested steps upon repair from Truma was to firmly attach the back of the water heater down to the frame it's sitting on. (The back of the Truma is sitting on a frame member for the trailer.) After about 3 months, I heard back that the water heater I had was found to have an improperly torqued internal gas connection from the Truma factory. They told Oliver Service that upon tear down they found the torque issue was linked to a manufacturing line situation where their Torque tool wasn't properly calibrated. Not sure what batch of units that impacted but they eventually fully refunded my replacement unit. Thanks for the info from Truma on the mounting issue. I’ll take a look at that as well during the bypass valve repair. 1 Link to comment Share on other sites More sharing options...
Swamp Posted September 22, 2022 Share Posted September 22, 2022 Question, was it increasing more difficult to open/close as the problem developed? Swamp Pat (Swamp) from Joliet IL, 2021 Oliver LE II Hull "848" (19K miles to date) , 2020 Ram 1500 5.7 Hemi 3:92 rear end P75 Trans "Nowhere to be and all day to get there while looking for a place to happen. Making stops along the way" Link to comment Share on other sites More sharing options...
Frank C Posted September 22, 2022 Author Share Posted September 22, 2022 31 minutes ago, Swamp said: Question, was it increasing more difficult to open/close as the problem developed? Swamp No, the bad bypass valve still felt normal when opening and closing it. The faulty seal inside the bypass valve wasn’t noticeable until I removed the valve. The new CAMCO bypass valve is installed and works well so far. One nice little detail of this CAMCO valve is that the positions are labeled (open or bypass). And I changed all water lines into and out of the Truma to braided flexible supply lines and brass fittings to eliminate the issue of breakage of the rigid plastic connections that some owners have had. Camco 37463 3-Way By-Pass Valve Replacement - Brass https://a.co/d/8qur0uz 1 8 Link to comment Share on other sites More sharing options...
In Pursuit Posted September 22, 2022 Share Posted September 22, 2022 Looks good!! 1 Link to comment Share on other sites More sharing options...
Swamp Posted September 23, 2022 Share Posted September 23, 2022 16 hours ago, Frank C said: No, the bad bypass valve still felt normal when opening and closing it. The faulty seal inside the bypass valve wasn’t noticeable until I removed the valve. I went to winterize my trailer yesterday and my valve was very hard to move. I think a up grade is in future. Thanks for you help in identifying this issue. I hate to be lazy but could you share the info on the lines as well. I like the modification. Swamp 3 Pat (Swamp) from Joliet IL, 2021 Oliver LE II Hull "848" (19K miles to date) , 2020 Ram 1500 5.7 Hemi 3:92 rear end P75 Trans "Nowhere to be and all day to get there while looking for a place to happen. Making stops along the way" Link to comment Share on other sites More sharing options...
Frank C Posted September 23, 2022 Author Share Posted September 23, 2022 The braided supply lines with 1/2” female pipe thread ends are available in various lengths at any hardware store like Lowe’s, etc., along with the Sharkbite fittings to go on the existing water lines on the trailer. 3 Link to comment Share on other sites More sharing options...
Moderators topgun2 Posted September 24, 2022 Moderators Share Posted September 24, 2022 5 hours ago, Frank C said: along with the Sharkbite fittings to go on the existing water lines on the trailer. I do carry an assortment of Sharkbite fittings with me at all times in the event I should need to do a plumbing repair while on the road. However, there have been several posts concerning the possible failure of these fittings (unless performed exactly correct) in the various abusive (read that as vibration and flexing) environments that are common with travel trailers. Bill 4 2023 Ford F150 Lariat 3.5EB FX4 Max Towing, Max Payload, 2016 Oliver Elite II - Hull #117 "Twist" Near Asheville, NC Link to comment Share on other sites More sharing options...
Patriot Posted September 24, 2022 Share Posted September 24, 2022 On 9/22/2022 at 7:22 PM, Frank C said: No, the bad bypass valve still felt normal when opening and closing it. The faulty seal inside the bypass valve wasn’t noticeable until I removed the valve. The new CAMCO bypass valve is installed and works well so far. One nice little detail of this CAMCO valve is that the positions are labeled (open or bypass). And I changed all water lines into and out of the Truma to braided flexible supply lines and brass fittings to eliminate the issue of breakage of the rigid plastic connections that some owners have had. Camco 37463 3-Way By-Pass Valve Replacement - Brass https://a.co/d/8qur0uz Ordered to keep as a spare if needed. Thanks Frank C! 4 2020 OLEII - Hull #634 aka- “XPLOR” 2021 F350 6.7 liter Diesel Lariat Ultimate Tremor North Carolina 🇺🇸 Link to comment Share on other sites More sharing options...
rich.dev Posted June 22, 2023 Share Posted June 22, 2023 On 9/22/2022 at 7:22 PM, Frank C said: And I changed all water lines into and out of the Truma to braided flexible supply lines and brass fittings to eliminate the issue of breakage of the rigid plastic connections that some owners have had. Frank, I love what you've done here, really nice job! Sorry if I missed it but what did you use to connect the braided lines to the existing plastic lines/connectors in these 3 spots? Other than the Camco by-pass valve, do you maybe have a list of all the parts you used? Thanks! 2023 Elite II, Hull# 1386, Lithium Platinum Package (640AH, 400W Roof Solar, 3000W Xantrex Inverter), added 400W Renogy Solar suitcase with Victron MPPT 100/30 CC, Truma water heater & AC TV: 2024 Silverado 2500HD 6.6L 10-Speed Allison Link to comment Share on other sites More sharing options...
Frank C Posted June 22, 2023 Author Share Posted June 22, 2023 32 minutes ago, rich.dev said: Frank, I love what you've done here, really nice job! Sorry if I missed it but what did you use to connect the braided lines to the existing plastic lines/connectors in these 3 spots? Other than the Camco by-pass valve, do you maybe have a list of all the parts you used? Thanks! I used sharkbite connectors to go from the braided supply lines to the original plastic plumbing lines. I got all the parts at Lowe’s. 1 3 Link to comment Share on other sites More sharing options...
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