Rheem RTG-74PVN-2 Natural Gas Pronto Whole House, Natural Gas, Tankless Wat
Problem for Rheem RTG-74PVN-2 Natural Gas Pronto Whole House, Natural...

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




By jaytmoon on Nov 01, 2009

" "
Rheem Tankless waterheater modek rtg-74pvn installed 2 yrs ago, unit shuts off wo warning, error codes displayed c7 76. I turn of unit and restart and it runs ok for a while then shuts off for no real reason. Only other appliance running would be the furnace, this usually happens every fall

Best Solution

posted on Nov 01, 2009
Very Helpful)

JZKlipper

Rank: Guru  Tools - Hydraulic & Plumbing  Expert
Rating: 96%, 88 votes
Contact Rheem; the Burner control unit has lost comm with the remote...the part is warranteed for up to five years.
Comments:

Nov 11, 2009

- Remove power source from the unit. If remote control is installed; remove cover and lift the control wires on the terminal...can be accomplished from either end.

Restore power and see if unit functions normally.

Contact Paloma/Rheem customer (800-432-8373) support and notify them IF you are getting a code "76" error. Rheem has recently extended the warranty on the "Burner Control Assm."; which is your problem. The C4-C8 portion of the error code, is where the unit stops the ignition process...burner fails to light, or gives you intermittent hot water. In either case, contact customer support.

If this helps, please indicate so.
Mike//jzklipper
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