Question about Rheem Paloma PTG-74PVN / RTG-74PVN Natural Gas Indoor
1) Copy following links for troubleshoot resources:
2) Probably bad PC board.
3) Add comment and say what you find
Posted on Jan 19, 2013
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Posted on Jan 02, 2017
the system was not sized properly, you need to have a 3/4 gas line to the unit for the volume of gas it needs, the tankless water heaters need to have every bit of gas that is says, it sounds like who ever installed di not make sure you had enough gas comming in the house, you might have to either have a new meter installed or run the gas lind directly from the meter to the water heater and cap off the gas line thats there
Posted on May 29, 2009
I was having the same problem untill I reallized it was my venting system. Test the water heater with no vent on top. Disconnect the vent pipe from the water heater and try turning on the hot water. the water heater needs a special adapter to vent the direct vent water heater. One other thing you can check is the gas pressure in your home. You have to have between 7 and 8 WC (water Column) for the tankless water heaters. You can call your gas supplier to find out what you have.
Posted on Jul 04, 2009
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.
Posted on Nov 26, 2009
I had the same problem, but when you change the PCB the chip has to be reset regardles of the elevation so it can communicate properly. The rest is easy, Find the DIP Switch located on the top left side of the PCB set switch #1 & #2 to the ON position push and hold the adjustment buttom till the display changes from flashing to illuminating the reset the DIP switch #1 & #2 to the OFF position and you are ready to go.
Posted on Dec 01, 2009
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