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Ferroli 80 E Modena Insufficient pressure led flashing and no hot water. Any way I can fix by myself?

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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

Rheem Water Heater and the LED light is flashing 4 times which according to the manual states the the "Vacuum Safety Switch is open and fails to close to sequence, how can i fix this


Rheem does not post service manuals:
Here are resources that can help solve problem:
1) Troubleshoot by type of gas control valve using other water heater manufacturer's service manuals: Service manuals are very large pdf files.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent
2) Scroll up on same page and on right side is heading 'Pressure Switch' with 2 related pdf files.
http://waterheatertimer.org/pdf/Air-pressure-switch-testing.pdf
3) Post question on pro water heater forum
http://www.thetankatwaterheaterrescue.com/forums/forum3/

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Oct 06, 2012 | Rheem Tankless Hot Water Heater...

1 Answer

RHEEM RTGL 74 XP FLASHING 80 AND CL


I know this is late, but I just went through this problem right now, or rather just a few minutes ago, after finishing the installation.

What worked was holding the up and down arrows together, this is usually what resets other electronics. Well, it worked. It caused the unit to reset and everything started working properly.

Again, while I know this is a late answer for you, I hope it helps others that were looking for a solution and could not find one, like myself tonight.

Sep 14, 2012 | Rheem Tankless Hot Water Heater...

1 Answer

Loud vibrating sound coming from hot water heater. Had gas company change meter and regulator. At first was losing hot water while in the shower. Went through check list after it coded out at #12, all...


Can't address other issues, but WATER pressure should be 40 to 80(I'd say 70)lbs. tester at home D for $10-15. Goes on hose Bibb outside, or at washing machine cold valve.

Mar 18, 2017 | Rinnai 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

1 Answer

Dirty injectors on a Saturday morning in an isolated village


WHEN YOU NEED CLEAN I NEJECTER YOU MAY BE CLEANA ONCE DRUM IN WATER+ HCL CIRCULET 15MIN
AFTER CIRCULATE CLEAN WATER
ALSO CIRCULAT WATER+ EDTA+ SMBS POWDER
YOUR INJECTER WILL 80 % PER CLEAN

Mar 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

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