AO error code

check gas pressure if not enough it will not run call gas company sounds like you need more pressure

Rheem does not post service manuals.
However AO Smith has posted relevant service manual:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Have you cleaned the air intake located under combustion chamber, and inspected for broken glass vial?
Rheem FVIR system uses glass vial that breaks if combustion air is slowed, and resulting combustion causes slow-moving venting of hot gasses, causing overheating that breaks glass vial.
http://waterheatertimer.org/How-to-repair-Rheem-FVIR.html

Check gas pressure.

Replace gas control valve:
http://waterheatertimer.org/pdf/How-to-replace-water-heater-gas-valve.pdf

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

Tankless require yearly service to keep burner and combustion parts clean and check electrical connections, gas solenoid, gas pressure, venting, etc.
Read product manual for advisories and recommended maintenance.
Yes, aren't you glad you saved the manual.
Always check that local area has affordable and qualified service technician for your brand before buying tankless.
Before calling service technician, copy following link for general troubleshoot resources, including some manuals, and links to Bosch.
http://waterheatertimer.org/pdf/No-Error-Code.pdf
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html

Try turning temperature down.
The fact there is no error code, and the gas is not firing correctly, means you have a small unit with no error codes and PC board has failed ... or it means you have a unit with error codes and possibly bad PC board.
If problem is the PC board, then Bosch will send you new board, and expect same level of repair success as though your computer's motherboard was replaced.

You can buy ordinary box-store tank-type heater and install yourself same day for about $325.
Then maintain and fix it yourself. I recommend AO Smith/American/State/Reliance/Kenmore/Whirlpool since these are easy to maintain with clear directions in manual, plus AO Smith posts service manuals for the whole line of products, and any local plumber can fix them with ez-to-locate generic parts.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

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

You have AO Smith tank-type power vent water heater with FVIR flame arrestor.
1) I believe this system has White Rodgers intellivent gas valve, with led indicator lights.
To test if valve is operational:
-NORMAL operating mode displays no lights on gas valve.
-Unplug unit from electrical outlet and plug back in. All lights on gas control should display for 1-5 seconds.
-Press BOTH Hotter and Colder temperature buttons for one second to 'wake up' the control, and release buttons and LED will display temperature.
-Press Hotter or Colder and see if any indicator light shows on gas valve.
This will give baseline if gas valve is functioning.
-Intellivent gas valve requires outlet that is wired 100% correctly. Test outlet with circuit analyzer.
-Water heater must be properly grounded for intellivent to operate.

2) Open following link to identify gas valve and download possible service manual with error codes and testing procedure. Service manual is a large file and will probably not load on dial-up.
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html#intelli

3) Open following link for AO Smith manuals and service handbooks.
Shows same intellivent service manual, and shows manuals for power vent, but does not specifically list the GPS75 series
http://www.hotwater.com/resources/product-literature/service-handbooks/

4) Take a moment and rate answer:
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

How to remove error code (E000004-0010)from canon

Code 11-Pressure switch fails to open or close after five minutes.

This unit will produce condensation--quite heavily at times. The outlet drain hose must be allowed
to drain. Exhaust Vent piping must also drain condensate. Code 11 error would imply that these
must be checked.

90% of the time this problem is related to installation issues with either the vent or drain.

Either the fan is not working, or the fan prover (pressure switch) switch is stuck. If you can hear the fan going strong, it is most likely the switch. You may try to just clean it out, but you may need a replacement.


This error is produced when the blower prover switch does not close after the blower starts, the control will stop the ignition and go into lockout. Automatic reset is immediate after the blower prover switch closes.

If you keep having this problem, contact a reputable service company, especially if it's under warranty.

The link to the owners manual is below, it references fault codes, etc..

Hope this helps.

http://74.125.95.132/search?q=cache:4mAdY7bLfoQJ:www.haywardnet.com/products/Manuals/pdfs/Manual227.pdf+hayward+AO+error

Many modern appliances have error code build in to the control programing to help with the diagnosis of a failure. Frigidaire dishwashers with display s will flash Er then a two letter error code.

Er i s a Switch error (Replace Console Pn# 154639207)

CE is a Configuration error (Replace Control Pn#154543602)

UO is a Vent that will not close. (Replace Vent Pn#154682301) or remove blockage

uF is a Vent fan Not running (Replace Vent Pn#154682301) or remove blockage

Other codes you my see in the display that are not errors

LO is Low rinse aid

PF is power failure

Ho is Water Heating

CL is close Door

01-24 hours of delay

Service Test

To enter service test you must turn off the power and PF will be displayed. While in PF press and hold Pad # 1 and Pad # 7 at which time an “rt” will appear in the display. To get it out of service test Press Pad # 1 and the Pad # 7 this will return you to PF mode.

[ (#1)(#2)(#3)(#4)(#5)(#6)(#7) (#8)(#9)(10)(11) ]

Press pad # 1 Active water valve Ultimate Scrub Maxx Clean Valve on =FL Valve off =rt

Press pad # 2 Test Speed motor (1 Time) motor @ 2800 rpms Speed Wash pad ”28′ First two digits motor speed

Press pad # 2 Test Speed motor (2 Times) wash motor @2950 rpms Speed Wash pad “29′ in display

Press pad # 2 Test Speed motor (3 Times) wash motor @3150 rpms Speed Wash pad “31′ in display

Press pad # 2 Test Speed motor (4 Times) wash motor @3450 rpms Speed Wash pad “34′ in display

Press pad # 2 Test Speed motor (5 Times) turns off wash motor No light on ”rt” in display

Press pad # 3 Test Dispenser dispenser powered Normal Wash on = “Sd” off = “rt”

Press pad # 4 Test Drain pump on/off China Crystal or Party glasses on = dP off = “rt”

Press pad # 5 Test Fan dry Active vent on/off Top Rack,Eco Wash Glasses on = Fan speed off = “rt”

Press pad # 7 Test Rinse aid level none Rinse only low = RE full = RF off = “rt”

Press pad # 8 Test Soil Sensor none Wash Silencer or Wash pressure on = sensor voltage reading off = “rt”

Press pad # 9 Test Thermistor none Wash Temperature on = Temperature in °F off = “rt”

Press pad #10 Test Heater on/off Heater on/off No Heat Dry on = HO off = “rt”


Let me know how this works out for you.


Benjamin