My Rheem tankless RTG-66DVN has worked great until the past two days. It keeps tripping my breaker. What would cause this?

Dominic

• 167 Answers
• Posted on Nov 28, 2008

SOURCE: Rheem RTG 53 PVN with fault codes C4 or C7

First off, if you don't have a water softener supplying the tankless you have voided your warranty; it's in the fine print. The mineral deposits build up and clog the heat exchanger; that may not be the problem because you're not having water pressure issues. Furthermore, you don't need the control unit for the tankless to operate; remove the control unit and unplug / shut off the breaker for atleast 3 minutes. Turn the power back on and see if that resets the unit; this may get your hot water back until you can determine the error code. I will look up the Rinnai error codes tomorrow and get back to you on this since my experience with Rinnai products is limited.

SOURCE: Rheem Tankless wh model rtg-74pvn shuts off error code c4 76

Contact Rheem; the Burner control unit has lost comm with the remote...the part is warranteed for up to five years.

SOURCE: Rheem water heater turns off by its self

Flashing code 76 is lost communication between the remote and the burner control assembly CCA (circuit card assembly). The CCA is still under warranty if purchased within the last 3 yrs. Contact Rheem customer service and have your Mod. and S/N available....explain to the agent you are recieving - flashing code 76...they'll walk you through the process.

SOURCE: I have a 1L error code. Can you help?

Hi stevenandarl,
Contact Paloma/Rheem customer (800-432-8373) support; tell them the code you are displaying. Rheem will send you instructions via email if you feel you can perform this operation yourself. Or they will recommend a professional in your area to help you.

Mike...

SOURCE: Hi, I have a Rheem RTG-74PVN-2 tankless hot water

there will need to be a recall, everyone is having the same problems across the country. Rheem is finally taking notice. Call your dealer and they may replace unit.