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My American Heat ADK-1 is not heating the water what is wrong

American tankless water heater model ADK-1. The light is on but the other lights are not coming on as it should when the water is hot. I turned the master water switch off and on still no indication the the water is heating. What can be wrong.

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Posted on Jan 02, 2017

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heatman101
  • 43501 Answers

SOURCE: My American Heat ADK-1 is

Hi,
The problem is usually the thermal saftey cutout switch....this can be manually reset, but if it continues to cutout then the thermostat is bad and needs to be replaced...

You can see all of the parts and where they are located by going here and checking out page 4

heatman101

Posted on Sep 05, 2011

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1 Answer

No heat from heater


Copy following link to help identify water heater.
http://waterheatertimer.org/How-to-fix-water-heater.html
Add a comment and describe water heater in detail. Attach video with clear description.
If unit has blinking lights, then check product manual for error codes from blinking lights.
If unit is delivering no hot water, check for cross connections
http://waterheatertimer.org/Crossover.html
Call service technician and catch up on routine maintenance, such as cleaning water filter, etc

Jun 10, 2013 | American Heat ADK-2 - Electric 8.2KW...

1 Answer

I need the diagram american heat adk-3 6.4


You want wiring diagram? With recommended wire size?
This particular water heater is direct-wired into a wall box, and appears to be 240Volt 6500 watts. Connect water heater to 40 amp breaker and 8 gauge wire.
Look at nameplate on device for amp and wattage rating to confirm exact power requirement.
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html

Or a general part illustration?
http://waterheatertimer.org/images/American-ADK-3-parts.jpg

Contact American Heat. 888-818-4328
Their support button and link to product manuals and literature seems rather null date 10-14-12 which could indicate a company in transition.
There is email form
http://americanheatus.com/index.php/contacts/

American Heat is NOT same company as American water heater company.

Oct 14, 2012 | American Heat ADK-3 - Electric 6.4KW...

1 Answer

I need the diagram


You want wiring diagram? With recommended wire size?

This particular water heater has a factory-pigtail, and is direct-wired into octogon box, and appears to be 240Volt 6500 watts. Connect water heater to 40 amp breaker and 8 gauge wire.

Here is illustration:
http://waterheatertimer.org/images/Main-subpanel-Tankless-4a-8.jpg

Look at nameplate on device for amp and wattage rating to confirm exact power requirement.
http://waterheatertimer.org/How-to-wire-Tankless-electric-water-heater.html

Oct 14, 2012 | American Heat ADK-3 - Electric 6.4KW...

1 Answer

I have model AH21 Tankless Water Heater and it is not heating the water


try these steps - hope it helps
  • Selected temperature on your tankless water heater is too high. Select the lower temperature.
  • Inlet filter is dirty... clean it.
  • Make sure that there are no water path obstructions, including faucet aerators, shower heads...
  • Is the heater using the specified gas type?
  • Temperature sensors are loose... ensure that sensors are firmly mounted and are making contacts.

Jun 02, 2012 | RTO American Heat Tankless Electric Water...

1 Answer

ADK-1 Super------------why is it that I have to relpace the unit or repair it at least 6 times in 9 months? I have replaced the plunger and spring along with the heat sensor each time and still they die....


If you live in an area where you have hard water it can destroy pretty much any tankless water heater, but it seems that you may have another problem, I speak to them on a regular basis and everyone there seems to speak English and Spanish, its very important to make sure that this unit is installed by a liscensed person, whom will check your wire gauge, and breaker size, if you use 240v this unit can draw upto 66 amps, so its important to have an electrician size your heater for the correct voltage.

Feb 02, 2011 | RTO American Heat Tankless Electric Water...

1 Answer

Tankless heater says standby and nothing happens


You must to make sure that you have not used too much teflon tape, and also that the flow sensor is still inside the inlet pipe. For example these units some with a reed switch type flow mechanisim which when flow is detected it opens the door for the electricity to pass through the unit. so no Flow no power, or in your case there maybe something clogged, or your flow sensor is not inside the inlet pipe, also if this unit has been installed previously and had been working for sometime now, then check on the inside pipe behind the screen you will notice there is a small black or either white bullet style flow switch, if this flow switch is stuck on the inside of the unit, this is your problem, if not its a reed switch, you can call 1-888-818-4328 and ask for an ADK reed switch see picture attached

Oct 02, 2010 | RTO American Heat Tankless Electric Water...

1 Answer

I have an American Heat adk-1. As of this morning no hot water. Light is on standby. Unit one year old. Is there a reset button to try or any other suggestions?


You need to get a real tankless water heater, I had one of this brand and what a waste of money, when you call the company they do not speak very good English and if you talk to Richard whom is supposedly the VP he is as dumb as a mule.

Jul 11, 2010 | RTO American Heat Tankless Electric Water...

2 Answers

Water Temperature Fluctuates


no the tub faucet is the only faucet that is wide open you might have to not run full blast on the faucet , your tankless water heater is under sized for the application, to many gallons per min going thru the unit, look at the rating chart for your unit, the r94 is only 9.4 gallons per min, and a tub faucet can be upto 5 gallons per min, depending on the faucet,,

Jan 16, 2009 | RTO American Heat Tankless Electric Water...

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