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How do I turn down thermostat on this water heater?

Rinnai RIN160E24 is too hot! The water in the house we just bought is scalding-hot. Thermostat dial reads down to 40 but will not turn below 60. Any ideas? Thanks!

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  • 282 Answers

The temperture of a water heater should be approx 120 degrees. If you use a dishwasher that is the desirable tempurture to kill bacteria.

If your heater has two thermostates then make sure they are set for a 5 degree difference between them

Good Luck,

Marty

Posted on May 13, 2014

  • wa2yyx May 22, 2014

    Well, it all depends on the capicity of your water heater. Say you have a 40 gallon hot water heater and all of those people are taking showers one right after another. Of course your going to run out of hot water. There are several solutions I can suggest. Depending on how old your hot water is you may be better off replacing it with a new higher capicty heater or another option is to get a water restrictor placed in the shower head to limit the flow of hot water.

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6 Suggested Answers

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Posted on Jan 02, 2017

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CRTN
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SOURCE: No water flow from hot water tap with a rinnai tankless water hea

Its A Possibility The Left Over Water In The Hot Is Frozen. If Your Line Is Exposed Outside Somewhere It Can Easily Freeze Up. Turn On The Hot Water Everywhere In The House And If Accessible Check The Lines To See Where The Warmth Ends. You Can Leave One Off Over Night In Hopes That It Will Eventually Defrost.

Posted on Jan 16, 2009

  • 63 Answers

SOURCE: water is no longer hot

probably the thermostat ,also this could be your dip tube broke (burned) off! this tube takes the incoming cold water and sends it to bottom of tank! so only the hot water comes out the top...if broke, the incoming water mixes in the top of tank and presto! lukewarm water.. also I want to point out, as a plumber of 25 years, replacing estimated 200 plus tanks..that the average lifespan of tanks seem to be 11 years....really! so don't spend too much money on this one ! John

Posted on Apr 07, 2009

  • 9 Answers

SOURCE: 12-year old Rheem residential single-thermostat

TIME TO REPLACE TODAYS ARE MORE EFFICIENT

Posted on Sep 08, 2009

  • 45 Answers

SOURCE: My Rinnai tankless water heater cycles up and down

You need to first make sure is the tankless who do the “up and down”! . If the problem manifest on more then one faucet then the problem is the unit. Have a thermometer (we use a infrared gun wich we train on Hot water pipe !) and see if actually the unit is the culprit.
If the problem is only on one shower It is possible also to be a “antyscalding valve” If the trigger valve on your shower is being adjusted too low then it trigger a splash of cold water now and then on regulate intervals. Try to adjust the temperature lower at the unit (say 110F ) and see if the problem change. If it does, then the problem is for sure in the faucet. If it does not change , then you have a problem with the water flow sensor . It is simply getting stuck. Bad bearing or even a piece of Teflon tape. I believe you will need a certified technician for that so no issues with your warranty will appear.

Posted on Jan 13, 2010

  • 148 Answers

SOURCE: Hot water does not last long.

probably has a bad heating element. May be a little limed up also. Drain the heater and replace the elements. Take a special tool to remove and replace the elements. ( fairly cheap) You can probably get the elements and parts at a good hardware store. The people at the store probably will explain to you how to replace them. Feedback please if this was of help

Posted on Feb 20, 2010

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