Unexplained water pump start October 21, 2020, 10:17:08 pm The past 3 nights my water pump has run for approx. 1 sec. between 1AM and 4AM. I've checked all of my faucets and in cabinet plumbing connections and everything is dry. I have not checked at the pump itself yet because it is located behind the main power panel and converter making it more difficult to access.Should I check there? Should I be concerned about this or should I just turn the pump power off at bedtime? Thanks in advance for any thoughts. 1 Likes
Re: Unexplained water pump start Reply #1 – October 21, 2020, 10:34:57 pm The water pressure is dropping as the water in the system cools. Nothing to worry about. Happens to many of us. Rich 3 Likes
Re: Unexplained water pump start Reply #2 – October 21, 2020, 11:15:47 pm Thanks Rich! This makes perfect sense. I had the hot water heater on in the evening on each of these nights and the nightime temperatures have cooled significantly in my area as fall progresses. Bingo! Thanks again. 1 Likes
Re: Unexplained water pump start Reply #3 – October 21, 2020, 11:30:15 pm also while in this topic, what a great location for the water pump! right next to the electrical panel, nothing could ever go wrong with that....
Re: Unexplained water pump start Reply #4 – October 22, 2020, 08:50:54 am It may be due to cooling, as Rich suggested. It may also be a problem with the pump. The pump contains a check valve that is to prevent back flow of water, thus maintaining pressure in front of the pump. If the check valve is leaking, the symptoms will be exactly what you describe. It happened to me, and ShurFLo sent me a replacement check valve. As I had already replaced the pump, I never put in the replacement valve. I carry the old pump and replacement valve as a spare.To determine which is the cause, give your water heater a day with it off so it no longer holds hot water. Turn the pump on. If it cycles repeatedly (mine did about 1 to 2 seconds about every 10 minutes), it is the check valve, not cooling.Ken F in NM 2 Likes
Re: Unexplained water pump start Reply #5 – October 22, 2020, 12:11:36 pm Quote from: Kenneth Fears - October 22, 2020, 08:50:54 amTo determine which is the cause, give your water heater a day with it off so it no longer holds hot water. Turn the pump on. If it cycles repeatedly (mine did about 1 to 2 seconds about every 10 minutes), it is the check valve, not cooling.Also, check for leaks if this occurs.Most leaks are concentrated near the pump and its hoses, but can be anywhere the plumbing runs.We hear the cooling burp almost every evening we sleep in the LD.Larry 1 Likes
Re: Unexplained water pump start Reply #6 – October 25, 2020, 01:27:38 pm Thanks Ken. I checked as per your recommendation and everything is normal so must be the "cooling burp."
Re: Unexplained water pump start Reply #7 – October 25, 2020, 09:23:29 pm I have also noticed something similar to this in my MidBath. Turned out to be the relief valve in the water heater. It had a little bit of sludge (the white stuff) in it. We used the water enough during the day that every thing reset it self. But at night we would lose enough water the pump would cycle. I was worried because I thought I had a leak. And I did. But the happy side was I just let the relief valve run a few seconds and it cleared. (I happened to see a drip is how I figured it out). I just redid the air gap in the water heater and all was fine. A very easy check. Now once or twice a year I let this run a bit to make sure any of the white stuff is flushed out.
Re: Unexplained water pump start Reply #8 – October 25, 2020, 10:53:43 pm "I just redid the air gap in the water heater..."JohnApparently you have fortuitously stumbled upon a little known trick. If you do not establish and maintain the air bubble within the hot water tank all sorts of gremlins creep in. Next time turn the water heater off, making absolutely certain that the water is not hot enough to scald you, open one or more faucets, hot and cold, in the coach, go outside and open the pressure relief valve and let the excess drain until it stops. Then, "with attitude" snap the valve closed. Normal up the faucets, turn on the w.h. and you're good to go. The symptoms will often occur after an elevation change, from high to low. 3 Likes
Re: Unexplained water pump start Reply #9 – October 26, 2020, 11:48:11 am You guys just keep impressing.....so the "burp" was no longer in evidence...but....based on John and Steve posts I opened my outside water heater door and.....while no longer wet, it looked to me like there were some slight water stains on the frame below the pressure relief valve.....so I will redo the airgap too. How do you guys know so much 2 Likes
Re: Unexplained water pump start Reply #10 – October 26, 2020, 04:35:57 pm Quote from: Mattb - October 26, 2020, 11:48:11 am How do you guys know so much The Mothership has been putting these things on the road for over 60 years, some are owned for decades and some of the owners have had multiples. That builds a lot of institutional knowledge with the number of people who have made or observed these 'lessons'. That's one of the benefits of being in this 'cult'Safe travels and see you down the road.Joel(I can attest - the only stupid question is the one not asked ) 2 Likes
Re: Unexplained water pump start Reply #11 – October 26, 2020, 05:15:16 pm Quote from: joel wiley - October 26, 2020, 04:35:57 pm(I can attest - the only stupid question is the one not asked )Let me add -- asking a 'stupid' question is cheaper then learning the 'hard' . Just saying.glen 1 Likes
Re: Unexplained water pump start Reply #12 – October 27, 2020, 12:11:40 am "How do you guys know so much "Two things, Been there, done that! and it takes practice to become perfect. 2 Likes
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