Question about Noritz 6.9 Gallon Residential Direct Vent Tankless Water Heater - N

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It will heat water when noff for a long time. 4 hours or more. thenn it will trip the remote control. If I reset it will start to cycle twice and then trip again with a 20 flashing on the error code.

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It's heating up too hot. you need to flush it out ASAP!! it has too much hard water in the heat exchanger. let me know if you need details how to flush it

Posted on Aug 02, 2009

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Posted on Jan 02, 2017

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1 Answer

Off peak hot water not heating!!! :(


The Economy 7 can control different types heater. Some heaters do not have off-peak ... but you can solve problem..
Copy following link:
http://waterheatertimer.org/pdf/QE7-INSTRUCTION.pdf
If timer is wired to two different elements, then the night rate element or off-peak element might be burned out. Test element with multimeter.
http://waterheatertimer.org/How-to-test-water-heater-element.html
Also this timer is wired so either Off-peak is getting power or Boost is getting power, but not both at same time.
If heater has off-peak element, then there will be a wire connected to terminal 5, going to heating unit.
If there is no wire on terminal 5, then there is no off-peak element, or wiring has not been connected. However you can change the timer function by moving wire on terminal 4 to terminal 5. Then only the off-peak timer function will operate, and not the boost.
You can also fool the timer, by setting time clock differently. Instead of setting timer for current time, rotate the dial and fudge current time by 10-12 hours so water heater thinks it's time for boost, but the actual time is during off-peak hours.
If terminals 4 and 5 both have wires, then either the element is burned out, or the timer has malfunctioned. Again, you can fool the timer by setting current time differently, and solve problem.

Apr 26, 2013 | Water Heaters

1 Answer

Water heater heats water and then cuts off. I replaced the lower element with a guaranteed for life element. It still heats up and cuts off. There is a control box on top that allows for an easy reset. ...


1) Bad thermostat or thermistor depending on model.
Whirlpool/Craftmaster/American energy smart has control box on top, and you can order parts from Whirlpool.

2) Copy following links to help identify product.
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html
http://waterheatertimer.org/Whirlpool-Energy-Smart-electric.html

3) Add a comment with more detailed information:
You have electric water heater.
Unknown brand, possibly energy-smart.
Unknown control box.
Cut off? Do you mean 'reset' is tripped?

4) Whirlpool energy smart requires 10 gauge wire and 30 amp breaker.
Control panel may not function with undersized electric supply.
Control panel has blinking-light errors ... if no error code then maybe the control box is bad.

Jan 18, 2013 | Water Heaters

1 Answer

Have a Rheem Powervent Water Heater. It's tripped out with the code of ECO Failure, the light flashing 4 times then twice. Need help


you will need a new control unit I am sorry to say. If the unit is under three years old I think they will send you a new controer for shipping. Many a time they have sent me new controls for free. I think they know when they get w bunch of woopppps heates with controls of fans,

I wish I had better news but call their 800 number and get the ball moving

Hope this was a help at least to save you a few dollars and not buying a new unit. aaaaaaaaaathe cost on that controler is right at 200.00 so I think I would be cold for a few days.

NAVY SHOWERS.

Be safe. Tom
Please take a min to rate us its the only way we know if we are serving you and other home owners in a proper why.

Sep 10, 2011 | Rheem Water Heaters

1 Answer

Powerstar 115 tankless tripping reset ontop of #2 heat chamber #1 does not get overly warm mainly because of incoming water temp. but #2 seems to be heating after water flow stops to hot to touch and...


I don't have specific suggestion for tankless tripping breaker or if that is a circuit breaker problem or a tankless problem.

1) Move wires to another same-size breaker and see if problem persists.

2) Compare amp draw on tankless label with wire size and breaker size amp rating.
For example 30 amp breaker using 10ga wire is rated for 80% of listed amps or 24 amps.

3) If you are drawing full 30 amps, then 30 amp breaker is getting hot. Breaker trips with heat. Older breakers can trip more easily.
http://waterheatertimer.org/How-to-replace-circuit-breaker.html

4) Before calling service technician, open following link for Bosch troubleshooting steps.
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

5) Be sure to read manual for yearly maintenance requirements.

6) Add a tempering tank for incoming cold water problem.
http://waterheatertimer.org/Tempering-tank.html

7) All gas tankless brands can be repaired by homeowner for $330.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Apr 22, 2011 | Bosch PowerStar AE115 Tankless Water...

2 Answers

Breaker trips; reset breaker at panel and water heater "on" light comes on. Breaker tripped again in 5 min; reset breaker again and water heater light comes on. Cycle continues to repeat. Bad...


It is possible that the breaker is bad. It is also possible that your water heater is overloading the breaker. It is probably easier to try a new breaker to start with. Unless you are familiar with changing the breaker, call an electrician. Your life is a very valuable asset to you!

Feb 18, 2011 | Water Heaters

1 Answer

I own a Rinai Integrity 2532. It heats the water for the in-floor heating. About once every other day on average, the controller switches the temperature reading from its setting (150 degrees) to 10 and...


Sorry to read about your problem, I hope this helps you out.

You have not said anything about error codes, Based on that. You may have a defective remote control, to replace the remote, would be the first step. it would be the lowest cost to you.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question. take the time to rate us.Thanks and good luck

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Dec 30, 2010 | Rinnai Digital Remote Water Heater Control...

2 Answers

I TURNED ON POWER TO MY NEW ELECTRIC WATER 40gal MODEL # GEM402 AFTER FILLING WITH WATER. WATER WOULD NOT HEAT UP. CHECKED THREMOSTATS BOTH WERE PRSET AT 120 CHECKED POWER,BOTH HOT WIRES HAVE 124 VOLTS TO...


The controls of electric water heaters are designed so that at no time are both the top and bottom heating elements energized. Nearly all electric water heaters of this capacity in the US & Canada (other places, too) operate on 240 Volts.

When the water in the tank is below the set point of the thermostat (in your case - 120 degrees), the top heating element is expected to be on - (unless there is an issue with the top thermostat or limit switch). The top most control is the "high temperature limit". It is identified by the reset button on it. Make sure this isn't tripped by depressing the button. If it clicks - it was tripped and should start to make hot water at this point. If not tripped, you should check for the presence of 240 Volts between the heating element terminal screws. Do not measure from ground to a terminal screw and believe 120 Volts is "good". To make heat, you need 240 Volts - not 120 Volts measured across the terminals - not to ground. The amount of heat created running at 120 Volts is only 1/4 of what it will do at the correct voltage.

If you don't measure 240 Volts on the top element, check the bottom element in the same manner described for the top element.

If unable to measure 240 volts on any element, either there is a problem with the power source (blown fuse or circuit breaker), high temp limit switch, or thermostat(s).

If 240 Volts is present on either heating element, and water is not warm / hot in 30 minutes or so, a defective heating element is suspect. You can change controls without draining a tank, but replacing elements will require draining the tank first. Do not power the water heater without first filling it.

You can read a very detailed "how to" article about checking water heaters here.

I hope this helps - and good luck!

Nov 04, 2010 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

I own a Bradford White Corp. Electric Hot Water Heater. It has two thermostats, one upper and one lower. Model # M-1-40S6DS 13, ser# XK0300351. My problem is the red button on the upper control trips...


Hello. If you turn off the power and drain the tank then examine each of the heating elements you will find that the upper element is deteriorated. The fix is to replace the heating element. Actually though my practice is when one is bad the other isn't far behind so for a few dollars I change both when I have the tank drained. Joe

Feb 28, 2010 | Water Heaters

2 Answers

Whirlpool temp control on electric water tank


Most electric water heaters have 2 heaters - an upper and a lower, each with it's own thermostat. These are readily accessible by removing the screw covers on the side of the tank. Careful - the thermostats have 240VAC on the terminal screws (unless you have a small 120VAC heater) if the circuit breaker or fuses feeding the heater are still on - turn them off before proceeding. After removing the two screw covers and pulling back the insulation you will see temperature (screw) adjustments for the upper and lower thermostats, with a temperature indicating pointer attached to each screw. Set both thermostats to 125 degrees or so. Push the insulation back in place, replace the covers and turn the circuit breaker back on that feeds the water heater. You should have warm water within 15 minutes and hot water within a hour or so.

If the water still does not heat, then you have to troubleshoot to find the problem. With a voltmeter determine if 240VAC is actually getting to the water heater. Remember, the upper element has priority over the lower element, and if the water is cold, the upper element will try to turn on and this locks out the lower element (only one element is allowed to heat at any given time). The lower element comes on ONLY after the upper thermostat is satisfied. Therefore if the upper heating element is burned out you will never get any hot water. If you suspect this, TURN OFF THE POWER TO THE HEATER and take a resistance check of the upper element.

Nov 16, 2008 | Water Water Heaters

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