Question about Rheem Paloma PTG-74PVN / RTG-74PVN Natural Gas Indoor

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I have a Paloma water heater (serial# PTG-74PVN-2) that is now getting a code 11 error. For the 1st. 2 years of operation we had no problems with the unit. Then we started to get this error code. No new appliances have been added to the house. I notice that the tankless water heater is about 1/2 the gas capicity on a convential water heater. Currently the gas line that serves the unit is 3/4" to with-in about 8' of the heater where it changes to 1/2" pipe. The error code happens both summer and winter. Any sugestions?

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  • 391 Answers

Hi please do the following if you can
Gas is inadequate. Open the Gas Shutoff Valve all the way.
let me know how ya get on this should cure the error code

Posted on Mar 30, 2011

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Posted on Jan 02, 2017

gary1121
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SOURCE: Paloma PTG 74PVN Tankless Water Heater

did you check the filters on the the water valves, i am not exactly sure about your codes that are shoeing but if you could read it and post them, i know on some of the units 76 means there is low water pressure and the filters are behind 2 caps one on each side above the shut off valve take off the caps and remove the screens, clean them and replace them ,, make sure you turn off the water on both side first or you will get wet

Posted on May 29, 2009

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