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

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I have a richmond tankless water heater RMTG-74PVN-2 . the unit works most of the time but code c-2 comes up on the display and the unit shuts down. I shut the power off to reset this does not fix the problem. Sometimes it takes a while to clear. I know there was a recall on some units but they ended with a 1 instead of a 2. Is this related? how do i fix the code.

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  • gasman4u May 20, 2010

    C2 is not the error code. What is the number either preceeding or after C2 ?

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I have a Richmond tankless water heater PTG2-42PVN. It will work for a very short time & then I get an error code of either C4 or C7. The remote control alternately flashes IL - 120

Posted on May 28, 2010

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