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RTE-27 Green light on, red lights on when the water is on. Worked for 1 year no hot water now. if I shut turn the water on/off real fast the water gets Luke warm then goes cold. Can this be fixed?

Posted by Gregory Poche on

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ray gallant

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  • Water Master
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OF COURSE IT CAN BUT IF YOU TURN ELECTRIC ON WITHOUT WATER BEING FULL YO WILL SOON BURN THE ELEMENT OUT AND IT ISN'T FUN FROM THERE ON

Posted on May 02, 2020

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5 Related Answers

kma836

Kiddbrother

  • 7 Answers

SOURCE: boiler overheating

the problem there a relay stuck or thermostat bring on the pump & you can lower your high limit aquastat!! also the flow valves can bypass hot hot water risers time to put in a seperate water heater domestic coil are not energy efficient !!!! aquastat high limit set @ 180f deg low limit set @ 140f deg!!!
good luck!!! tim

Posted on Oct 18, 2008

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Earnest Bowes

  • 234 Answers

SOURCE: water heats for about 3 seconds and goes cold

Take the cover off and look for reset that has trip.If you can't find no reset turn the power off and wait for five minutes,turn on and turn water on also to see if you get hot water.

Posted on Mar 15, 2009

motor1258

Mike Butler

  • 6674 Answers

SOURCE: my jAYCO rv only get luke warm water for as few seconds and

Also check that by-pass valve(s) is/are, in proper position at back of tank.

Posted on Apr 26, 2010

Anonymous

  • 1 Answer

SOURCE: amtrol water heater WH-7P gets barely warm water

I had the same problem. I had a steam boiler and the water level in the glass gauge was below the top of the coil of the tank. remember water finds its own level, so it settled at the glass gauge level, therefore air got in coil.

to resolve problem : turned on manual water feed to boiler to raise water level. as water level got higher, let out water in hosecock between boiler and amtrol. amtrol noticed hot water reduction, circulator clicked on, boiler kicked on, turned off hosecock, turned off manual feed. I effectively bleed water out of line by running water out of amtrol as water feed in boiler increased water level above coil.

took a while to figure this out, so if this is the problem, dont feel to bad. keep water level of steam boiler high.

Posted on May 12, 2010

Anonymous

  • 4 Answers

SOURCE: I have a problem with my Rinnai hot water heater

We had the same problem - the hot water would only be hot for 3 -5 minutes and shut off, then we had to turn the water off, wait a few minutes, and do it again. VERY FRUSTRATING.

Solution: The Rinnai serviceman showed me the heat-exchanger blower/fan: It was clogged with dust and moths.

Another clue: Our Rinnai was extremely noisy when the heat came on. After the fan was cleaned and replaced, it is nearly silent.

If you are reasonably mechanically inclined:
TURN THE BREAKER / POWER OFF to the unit.

The blower-fan is located in the lower central area of the unit (at least on our unit). If you draw imaginary north-south, east-west lines through the center of the unit, the fan is in the lower-left quadrant. There is a spring clamp securing the black rubber accordian-like tube to the fan. There are two screws that secure the fan to the unit. there are two plugs that connect to the fan, as well as a third air-flow sensor that should be removed. then you can look at the fan unit, as well as the grill on the underside of the heat-exchanger that should be cleaned.

My thought was to go out and get a simple bug-screen, and place it over the air-input outlet vent going outside, but the repair guy said that although it may sound good, if that screen ever gets clogged, or reduces airflow to the Rinnai, then the unit will work harder, or even shut off, giving the same problem.

Posted on May 24, 2010

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2 Answers

Rheem rte 13 isn't activating or heating water.


Troubleshooting Tankless Water Heaters In MINUTES Step By Step
The above video will show in detail how to solve the problem. It sounds like you need a new flow sensor.

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What is causing electric tankless hot water heater to be needing red button reset often?


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www.rheem.com/docs/FetchDocument.aspx?ID=87d15e35-5adf-4e9f...
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Why do lights flicker


An electric water heater will draw a lot of electricity. Your house may not be wired well, and when the heater kicks on, your lights will dim some. If your house is over 25 years old, it's likely normal.

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Green active lights on but not red standby and no hot water


If tankless computer is less than 5 years old, then call Rheem for local technician qualified to work on this type of computer that heats water.

If tankless is older than 5 years, then replace with tank-type electric water heater for $285 from Lowes.

Avoid Rheem, Richmond, Palmoa, GE water heating products since this company does not post service manuals.

Choose AO Smith, American, State, craftmaster, Whirlpool etc.

Gene
h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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Rheem rte13 standby (green) light not on


You might have crossover problem caused by bad faucet cartridge.
http://waterheatertimer.org/Crossover.html

The green standby light should come on when 240Volt power is applied. Page 6 manual.
Both red lights should come on when tankless is activated. Page 6 manual

RTE 13 requires 60 amp breaker and 6 gauge wire
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html
http://waterheatertimer.org/pdf/Rheem-TanklessElectricUC_AP15447.pdf

Factory temperature setting is usually default 120 degrees.
Adjust temps page 11 manual
Thermostat calibration is always approximate.
120 degrees is not hot enough to burn the skin.
Exceptionally cold incoming water temperature can cause tankless not to heat enough hot water: install tempering tank to preheat water to room temperature.
Tankless cannot be exposed to more than 11 grains hardness in water. Delime tankless yearly, clean water filter monthly, do not install low-flow restrictions or conserve water since the flow rate must remain high for tankless to activate.
Rheem does not post service manuals for their tankless water heaters.
Call Rheem 800 432-8373

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After a few minutes of burner heating the water, gas shuts off.


A couple of things to check:

If possible, remove the pilot gas assembly and clean the gas jet and thermocouple - they can get carboned up and stop working properly. Make sure the pilot flame and deflector is aimed properly and making the thermocouple glow red hot. If the problem persists, you may want to replace the thermocouple and also check the propane regulator.

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