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Junkers boiler I have a A3 Error Code. Should I disconnect the boiler and reconnect -or is there another solution.

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Posted on Jan 02, 2017

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SOURCE: Ferroli boiler error code A3

boilers need a certain amount of water pressure to operate as specified--there may be a pressure regulator valve, allowing a certain amount of water to your boiler, and when water is drawn elsewhere, there may not be enough getting to the boiler---this is one possible solution, but there are easily 20 more, and that is where a trusted plumber is worth it's gold...very difficult to diagnose most plumbing problems without being onsite

Posted on Mar 14, 2010

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1 Answer

Junkers WR11 Water Heater Keeps Switching Off


Do NOT disconnect anything. Has the unit been maintained, cleaned and serviced? There may be a limit switch malfunctioning. Your safest bet is to have it checked out my someone who knows and is familiar with the unit you have, could be simple, but be safe and have it looked at.

May 27, 2014 | Water Heaters

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Noritz Boiler NH-1501-DV-NG Shuts off at radom times with blinking error code 123


error code 123 is a flame rod sensor problem. Chances are the flame rod is sending a weak signal to the control unit. Check for a loose flame rod electrical connector. Peek in the flame inspection windows to ensure there is a proper flame on that side of the burner. If non of the above then try removing the flame rod and cleaning with 400 grit sandpaper or replace it with part order # SKC7448 (called an Ignition plug ELV & Packing EHK SETV)

Dec 16, 2012 | Noritz NH150-DV-NG Indoor Direct Vent...

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My bosch tankless water heater is flashing ae


Before calling service technician, open following links for Bosch error codes, and contact information, and possible product manual for your model, etc:
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Bosch_EA_error_code_troubleshooting.pdf
http://waterheatertimer.org/pdf/Bosch-GWH2400ES-error-codes.pdf
http://waterheatertimer.org/pdf/Bosch_A4-E4_error_code_troubleshooting.pdf

Error code AE is not shown, but error EA means "burner flame not recognized by control unit when water is flowing"

There is also error A3 and A3 E3: jumper connection is not correct

Sep 26, 2011 | Bosch & Tankless LP Hot Water Heater

1 Answer

My tank is flashing ae on it


Before calling service technician, open following links for Bosch error codes, and contact information, and possible product manual for your model, etc:
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Bosch_EA_error_code_troubleshooting.pdf
http://waterheatertimer.org/pdf/Bosch-GWH2400ES-error-codes.pdf
http://waterheatertimer.org/pdf/Bosch_A4-E4_error_code_troubleshooting.pdf

Error code AE is not shown, but error EA means "burner flame not recognized by control unit when water is flowing"

There is also error A3 and A3 E3: jumper connection is not correct

Sep 26, 2011 | Bosch Water Heaters

2 Answers

Why does my Ferroli HE31C keep switching off code A3.


Here you go, page 30, sounds like it's overheating, possibly a problem with the boiler stat or lack of circulation in the system. http://www.ferroli.co.uk/Product_Documentation/Domestic/Optimax_HE_31_C_Manual.pdf

Apr 06, 2010 | Water Heaters

2 Answers

Ferroli boiler error code A3


boilers need a certain amount of water pressure to operate as specified--there may be a pressure regulator valve, allowing a certain amount of water to your boiler, and when water is drawn elsewhere, there may not be enough getting to the boiler---this is one possible solution, but there are easily 20 more, and that is where a trusted plumber is worth it's gold...very difficult to diagnose most plumbing problems without being onsite

Mar 03, 2010 | Water Heaters

1 Answer

Have a burmham freedom cm120. There is mo error code. The circulators rum but boiler does mot fire up. Why is there mo error code for this problem? What do you thimk is wromg with it?


Hi,
If you have no codes then I would say that the problem is not within the boiler. It would be because the boiler is not getting signal to fire.
Open the flip down lid at the control module and find the low voltage terminal strip. Jumper #1 and #2 If the boiler starts then you have a problem outside the boiler. If not then it is inside.

You can find the terminals by looking on page 55 of this

http://www.burnham.com/pdf/Freedom_io.pdf

Now if it is inside your boiler then start checking out the controller settings. The warm weather shutdown may be active, or the temperature limita are such that it will not call for heat.
Programming those MCBA controllers can be abit tricky and sometimes a power surge can mess iwththier brain... :-)

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

Dec 07, 2009 | Water Heaters

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