Question about Rheem Tankless Water Heater RTG-74DVP Direct Vent LP

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I have a Rheem rtg 74dvp but its not heating and the display show me 1 76 and 2 76, and come all the time to 76 F and another times its blinking the temperature, but not heat

Posted by carlos_landi on

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1 Answer

Anonymous

Error code 76 is communication problem between remote control and tankless unit.
http://waterheatertimer.org/pdf/Rheem-error-code-C7-76.pdf
Multiple error codes could indicate that main PC board is bad.
Before calling service technician, open following link for troubleshooting resources including link to Rheem chat, manuals, error codes, etc.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Posted on Jul 15, 2011

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Took cover off control panel of Rheem RTG-74PVP tankless hot water heater. A red light blinks 4 times. What does that indicate is wrong?


Two things- Clean the sensor rods or replace(cheap and easy with YouTube instruction video) and at the same time replace the main program chip (also a easy plug in chip). The whole repair takes two hours for a homeowner and costs about 50 bucks for a chip. These are easy and generally the flame sensor rod is the culprit. The code may also be the limit switch but try EZ and cheap first. See You Tube..
https://www.youtube.com/watch?v=npxcVo7RK2c

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Rheem RTG-66DVN shuts off 1-2 times a day


You received recommended answer posted ago.
Probably same answer today:
Don't install tankless, especially in location where there is no service technician available unless you expect to heat water by setting tankless out in sun.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Repair any brand tankless, any error code or problem, same day, yourself for $385:
http://waterheatertimer.org/How-to-install-gas-water-heater.html

Add comment and give link to service manual that you located.

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

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1 Answer

Tankless water heater model # RTGL74PVN is blinking 38 what does this mean


Copy following link for general troubleshoot and error codes:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Error code 36 does not show in any resource, including 2008 service manual, or 2012 product manual.
Check that remote control display is illustrating the correct number.
For example there is error code 35.

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

Oct 19, 2012 | Rheem Tankless Hot Water Heater...

1 Answer

What does code 36 mean


Error code 36 does not show in Rheem tankless manuals.

Copy following link for general troubleshoot and error codes, and Rheem contact information:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Error code 36 does not show in any resource, including 2008 service manual, or 2012 product manual.
Check that remote control display is illustrating the correct number.
For example there is error code 35.

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

Oct 19, 2012 | Rheem Paloma Tankless Water Heaters...

1 Answer

I have a Rheem RTG-74DVP-1. I am having problems now with it not heating. I have had codes 4, 7, and 8 all come up followed by a 76 all within two days


Usually multiple error codes means PC board failure, but could also be overdue maintenance or other part failure, or simply a combination of events.
before calling service technician, open following link for Rheem troubleshooting resources:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Apr 15, 2011 | Rheem Tankless Water Heater RTG-74DVP...

1 Answer

No hot water


contact rheem you probably have a circuit board problemb

Jul 24, 2010 | Rheem Tankless Hot Water Heater...

1 Answer

Rheem RTG-74PVN-1 Water heats for abot 2 minutes


overheat stat or fan, on fan check for small pinhole in rubber tube best of luck

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1 Answer

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could you have gotten a natural gas tank by mistake? it would have larger orfices and allow more gas than you need propane has more B.T.U.s than nat gas and requires a smaller orfice
chack with your gas co.good luck.

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1 Answer

Do i need to have a flow stop istalled in my cold water in line?


Yes you'll still need a flow stop unless it is already install in the outlet pipe going out out the heater..

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

Apr 01, 2009 | Rheem RTG-74DVP Direct Vent Liquid Propane...

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