5 years is about the lifespan for tankless.
You might have shorted element. That would explain cooler water and tripping reset.
Test element: power is off, disconnect wires from element; ohms = voltage squared divided by watt rating of element
http://waterheatertimer.org/How-to-test-water-heater-element.html
Call service technician./ Call Bosch
http://waterheatertimer.org/pdf/Bosch-AE115-AE125_manual.pdf
Gene
If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
I have discovered a temporary solution for the cut out switch tripping issue until I get the parts in. I noticed that the problem side of the tankless water heater was a lot hotter to the touch than the other. After using the hot water I'm immediately giving several very short bursts of water from the hot side. I do this very quickly before the water heater has a chance to power up. It seems to be cooling it down enough as to not trip the switch. Do this temporary "fix" give any clue to the problem?
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SOURCE: i have norton tankless water heater, and the reset keeps getting tripped... what can cause this?
It can be the breakers in your house or the reset button is malfunctioning
Water leaking into elements. Bad PC board. Undersized breakers. Undersized main panel.
Bosch Powerstar is a computer that happens to heat water.
If your 5-year-old laptop computer was malfunctioning, you would not be surprised.
But for some reason (false marketing by manufacturers?), folks believe a tankless computer is going to last 20 years.
Moreover folks also believe tankless will provide endless hot water while saving money.
The whole idea of tankless saving money is a load of sales-BS that defies physics and common sense.
There are no service manuals... except bosch website has troubleshoot section in product manual.
Call a bosch-qualified service tech.
Go to Lowes and buy ordinary tank heater, and fix your heater today for only $250.
Tank-type electric water heater can be easily repaired and maintained by homeowner to last forever... that is a fact
http://waterheatertimer.org/How-to-maintain-water-heater.html
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html
Gene
If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
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