Question about Takagi Tankless Water Heater - Computer Board for T-KJr - EKJ06

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Takagi EKJ06 computer board not working, can it be repaired ?

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Replace the board

Posted on Jun 07, 2014

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Code 211 comes on but vent is clear of any debris or blockage. Sometimes can go days without alarm sounding sometimes alarm sounds 3-4 times in 10 minutes.


Generally tankless must be maintained on yearly basis.
Error codes are usually stored in the computer memory until they reach a threshold and then the error code is displayed... it is possible the control board is bad.. or the sensor that feeds information to the control board is bad.
Contact manufacturer or installer.
Contact local service technician who is qualified on that specific brand.

Gene
http://waterheatertimer.org/Whirlpool-Energy-Smart-electric.html

Water Heater Timers Save Money

Mar 05, 2015 | RTO Takagi T-M1 Mobius Gas Tankless Water...

1 Answer

Takagi t-k3 runs hot on low to med flow on high turns cold & flame shuts off


OMG 95 PSI is too high a pressure for a tankless! What was the W.C. in inches on the manometer?
Also on a T-K3 12 isn't a Code but a partial Code. You need an R/C to make this easier as counting led flashes produces wrong codes.
you'll have to find the correct code it's throwing not a partial.
And put a Pressure Reducer on this to below 60 PSI. 95 PSI is only impressive when it blows the tubing out after a few years.
Call Takagi in California not A.O. Smith in TN and they'll help someone fix this

Sep 20, 2014 | RTO Takagi T-K3 Flash Gas Tankless Water...

1 Answer

Why wont takagi tk jr doesnt heat


Flowmeter.....Gas Pressure.....Ignition?
I'm not psychic.
Tk-Jr is a dependable 140-145,000 BTU 2nd Gen Unit SS Vent , <.82 EF.
Failure is a Tech Service issue and the Tech may need Factory Support from California. This is probably a pre-A.O. Smith/Takagi unit
Does the igniter spark 3 times than shut down and fan purge HE? Can you smell gas tracer (remember NG/LP is odorless w/o mercapthan in it)? Tech will need a digital Manometer for Line and Manifold Pressure Test. And a Multi-Meter Toll Free # on Unit or in Manual

Sep 07, 2014 | RTO Takagi Jr. TK-JR-N Tankless Water...

1 Answer

My Takagi TK3 isn't heating as it should. Had a tech out and he adjusted the dip switches to 140 degrees, which worked for a while but now it barely heats to 100 degrees. Gas flow rate appears to be...


Is tankless computer older than 5 years? Imagine how well a 5-year old laptop computer works.

Setting temperature to 140 degrees might be the basic problem:
Read following resource:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html#temperature

I doubt this Takagi computer unit was maintained as shown in product manual, and that heat exchanger was not delimed each year as shown in product manual. So the heat exchanger is probably heavily coated with un-removeable scale... since yearly deliming will not fully remove scale on tankless units, the tankless computer is designed to sprial downward in efficiency despite glossy brochures that promise endless and effortless hot water for 20 years ... as if any computer will last 20 years:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html#de-lime

Since you are not getting error code, the problem might be crossover, or some other plumbing problem:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html#no-error
http://waterheatertimer.org/Crossover.html

I always recommend replacing tankless computer with tank-type water heater for $385 for same-day do-it-yourself solution and to save the endless expenses that arise with computer-driven water heaters.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Gene
h

Aug 30, 2013 | Takagi T K3 OS P OnDemand WaterHeat

1 Answer

Abnormal two-way valve


The PC board says it needs to be swaped out

Jan 12, 2013 | Takagi TM-RE10 Temperature Remote...

1 Answer

991 error code on a Takagi T-K3 Flash gas tankless water heater


Re- set code!!!!
We have a Takagi TH3 DV 540 model.Air intake got blocked with snow, condensation etc.Once we cleared that then you just have to re-set it to clear the 991. On our model there are 4 tiny buttons across the bottom (Take off front cover) to find them. of the computer board assembly bottom left corner. Push the two buttons on the right simultaneously hold for 15-20 seconds or so, then turn the Takagi off then on again- should work now!
If you have a different model then those buttons will be in the bottom left corner still but running vertically- try doing as above with the bottom two buttons. We had to go without heat and hot water for 2 days until we could get hold of someone to tell us this. We called Seneca Supply 716-852-4744. Good luck

Apr 22, 2012 | RTO Takagi T-K3 Flash Gas Tankless Water...

1 Answer

My Takagi T-M1 water heater is not functioning. After less than a minute of operating it stops and the red light in the front is blinking.


I HAD THE SAME PROBLEM. I CONTACTED TAKAGI WHO SENT OUT THE REPLACEMENT PART. AFTER INSTALLING THAT PART, IT WORKED FOR A MINUTE AND STOPPED. I CONTACTED TAKAGI ONCE AGAIN AND WAS TOLD "OH, THAT MOTHERBOARD GOES OUT SOMETIMES IF THAT FIRST PART GOES BAD!" THEY THEN SENT OUT A NEW MOTHERBOARD WHICH FIXED THE PROBLEM.

Mar 18, 2011 | RTO Takagi T-M1 Mobius Gas Tankless Water...

1 Answer

Takagi Jr Flash Water Heater Problem


explain your problem.
Takagi is a great tankless heater, very few problems...

need more info

Aug 04, 2010 | Ultra Max Takagi Flash TH-1 Ultra High...

1 Answer

Pilot fires then quickly shuts off how do I pull a code on a Takagi T-K2?


Pilot must heat the thermocoupler a couple of minutes before letting go of the button. The coupler controls the main valve.

Jun 12, 2009 | Ultra Max Takagi Flash TH-1 Ultra High...

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