Question about Rheem Tankless Hot Water Heater Rtg-74pvp-2 7.4 Gpm

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HEATER SHUTS DOWN AND I GET A READIN FO C7 76 WHATS THE PROBLEM?

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Open following link for handy Rheem troubleshooting resources:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf

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Posted on Mar 25, 2011

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What is left to check. Shuts down with error code 13 after 2-3 min.


Whats the error code? You should first look that up on their site, and ask further questions here.

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1 Answer

My gas was turned off for 4 days. after being turned back on the pilot will light and the burner fires up but shuts of in 10 minutes


If heater has a sealed front door the air intake filter is probably clogged. Remove the door and vacuum out all the dust and debris in the inside. Then use an air compressor to blow down thru the filter and force out any dust caught in the underside of the filter. Reinstall assemble heater and relite. If problem continues replace the gas control. If unit does not have sealed door just replace the gas control

Jan 01, 2014 | Rheem 40 Gallon FVR NATGAS Low WATER...

1 Answer

Have Error code FO, no hot water. Press reset and water gets warm for few seconds then goes off again.


1) BOSCH website shows error codes.
FO does not appear:
http://www.boschhotwater.com/HelpfulResources/TechnicalSupport/BoschAquaStarModels/2400ESTechSupport/Troubleshooting/tabid/1295/Default.aspx

2) I do not see FO error code listed on Internet search
Other FO questions at fixya seem to have no answer:
http://www.fixya.com/tags/error_f0_bosch

3) At this point, I would suggest calling a service technician.
While waiting for service, read manual cover to cover several times.

4) Your manual is valuable resource, and shows the word 'maintenance' and 'troubleshoot' frequently.
Tankless are maintenance heavy, and should be de-limed each year.
U-tube search "delime tankless water heater."

5) Also explore Bosch website for your manual and other valuable information.

6) When service tech arrives, ask that person for tips and tricks about your unit that will help you maintain your water heater.

7) All costs are energy. Install DIY tank-type gas water heater and avoid the whole headache.
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Mar 08, 2011 | Bosch Water Heaters

1 Answer

My heater is sending me 2 codes 1st is C7 next is 76 and it shuts down whats wrong ?


Should have list of codes in manuel,most of time its either gas pressure problum,or venting issue i.e. obstruction,or wind and weather problum.Being a plumber,there is a rheem rep.no# you can call to help-always nice people

Jan 26, 2011 | Rheem EcoSense by 7.4 GPM Tankless Water...

2 Answers

Gsw heater pilot stays lit, but when the main


It sounds like your main valve. The diaphram may be loose fitting or it has a small leak.

Oct 03, 2009 | Fasco GSW Hot Water Heater Exhaust Draft...

1 Answer

Bosch hot water service 16p burner shuts down


a tankleess water heater doen's have a piliot? but check the vent outside make sure nothing is blocking it, if it detects the exhaust thru the cold air intake it will shut off and over heat, other then that it would have to be the control board

Jun 05, 2009 | Bosch & Tankless LP Hot Water Heater

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