Question about Hayward 250kbtu Ng Pool Heater - Inground

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My H350FDN heater is just over a year old and has been used very little - maybe 6 times. Now I am getting the AO error code which seems to mean a vacuum switch or relay problem. Any ideas on where to start would be appreciated. The manual is written for an expert which I am not - but I can open the panel and do some basic checks. Thanks

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On your fan housing you have a hose coming off it this runs to a pressure switch that works on vacume. This hose the connection on the housing the pressure switch or the wires going to the pre. sw. could be the problem. I would start with these. If the problem remains or the fan won't it may be time for a repairman. Good luck.

Posted on May 09, 2010

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Richmond tankless water heater will not clear error code


Why is it always Rheem problems?
Every water heater problem at fixya is Rheem.
And Rheem doesn't post any service manuals, like the other two big manufacturers, AO Smith-American, and Bradford White.

Rheem 2012 manual says if error 13 still displays, then contact installer or service technician. Mo Money buddy.
This is about oxygen sensor, poor combustion, bad venting, inadequate air supply, failed sensors, etc.
Get more fresh air to unit and see if that solves problem. The call service technician, and get out wallet.
Copy following link for Rheem-richmond tankless troubleshoot.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Maintain water heater according to instructions in manual to avoid common error codes. Of course this means you have to service the unit each month, and each year, without guarantee the thing will work correctly.

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

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What does the error code F-03 mean?


F03 error code means that the wash thermistor is "Open Circuit" genetally, this is located on the heater assy at the back of the machine.

Check the wiring and contacts between the thermistor and the PCB. If you still get the fault it could be the Thermistor ( which means replacing the heater ) or a faulty board. If it is under 5 years old - Call Hotpoint as you have a 5 years Parts Guaranteed.

Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa.
Jose.

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I have a six-year old AO Smith Model 50-100 that goes out intermittently and is getting harder to light and stay lit. Had the thermocouple replaced today, and it still won't light and stay lit. I am...


1st thing I would check would be the chimney. Take a match and light it, stick it near
the draft hood of the water heater, be carefull it might be hot. If the match gets blown
out, then you have a backdraft problem. Because it does not happen all the time, perhapsit only does it when you have a strong wind.

Turn off the gass and break the union apart, turn on the gas for a little bit to bleed the
air out of the line. Turn the control on water heater to pilot or lowest setting. Follow
the lighting instructions, if it still does not light then my guess would be the gas valve.

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1 Answer

I have a Servi-star 40 Gal. electric SN# SS 0496B15258, How old is this unit? Thanks, Jim


http://www.buyerschoiceinspections.com/water-heater-ages
There seem to be 2 possible answers: Servi-star vs Servistar

Answer #1: Servi-star by American
1st 2 digits are year, 2nd 2 digits are week

This means water heater was made year 2004, 96th week ....it seems wrong.

Answer #2: Servistar by Craftmaster
1st 2 digits are month, 2nd 2 digits are year

This would mean your water heater was made 4th month of 1996

Which answer is true? 6 years old or 14 years old
If tank had 12 year warranty and came with 2 anode rods, and you have good water, and no stray current on pipes, then tank can last 14 years.
If tank had 6 year warranty and came with one anode rod, and you have hard water and a water softener, and you never changed anode rod or drained tank, then 6 years is a long life for the tank.

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2 Answers

Ao error message in Hayward heaters


You didn't indicate exatctly which model you have. But on most the AO error code is :Blower vacuum switch
open error If the blower prover switch does not close after the blower starts the control will
stop the ignition trial go into lockout. The blower will continue to run. Automatic reset is immediate after the switch closes.Check to be sure combustion blower starts
If you don't have your manual you can download one for your exact model at : www.haywardnet.com

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1 Answer

I have a ao smith 30 gal power vent, propane.2nd time in 6 years it has melted the vent. the vent is only maybe 5 feet, up 2 and out 2, sch 40 3 inch. any suggestions


the sch 40 venting is no longer code , it has to be upgraded to a more heat resistant pipe called 636 pipe , it is also a plastic pipe but can withstand alot more heat. the 636 pipe goes together with a acid glue/primer, you have to place primer on pipe then the glus and push peices together hold for a few secs and your good. hope this helps you

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My 15 year-old RHEEM Warrior Model 71-40S forty gallon electric water heater is leaking, and the element also needs replaced. I am thinking it is likely time to get a new, energy-efficient model versus...


Rheem makes great products. Lowe's sells whirlpool brand and they are not all that bad for the money. I would buy something better than the budget 7 year warranty model though. My preferred choice is AO Smith. I would definitely replace your water heater if it is 15 years old- most don't go much longer than that, although mine is 27 years old and going strong! Please remember to make sure and extend your pressure relief valve down to within 6 inches of the floor when replacing the water heater as Code requires. A water heater blanket will also earn its keep in a short amount of time.

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1 Answer

Our five year old electric water heater has been leaking around the bottom. It does not do it all the time and seems to be heating the water fine. What should we do?


You should replace it as it will let go one of these days. Most water heaters have a minimum 6 year warranty, so the heater should be replaced by the manufacturer...BUT, you will have to pay for the plumber (unless you want to tackle on your own). Get the make and model off the front tag and call them, they will tell you whether it's warranteed. It's really not too tough to install if you are fairly handy. Electrical is simple too. Feel free to email me with questions: BoRedSox1918@yahoo.com

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1 Answer

I am getting error code AO and the temperature


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1 Answer

AO error code


I would have to agree with you concerning the control module.

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