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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 Pronto Hotwater Heater Error




By anynymousme on Jun 16, 2009

" "
I received a similar error C7-76. I called Rheem and they're sending me out a new board and chip that according to them can be self installed. Once put in place I have to call them to program the chip. Until then I was told I have no hot water. :(

Thank God for (electric heated) hot tubs!

Solution #1

posted on Jun 16, 2009
Somewhat Helpful)

sijoyner

Rank: Apprentice 
Rating: 75%, 1 votes
Unplug unit from wall. Disconnect remote wires from circ board, and let unit set for about 5 minutes. plug back in. run water and see if unit comes on.
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