Question about Rheem GN100-200 100-GALLON 199900 BTU Lo Nox Water Heater
The pressure switch is working. The icm is new. it will fire up without the induces motor.
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Posted on Jan 02, 2017
Are you getting an error code? I could just be the pressure switch on the unit not allowing it to come on. You can try removing the hose from the inducer and blowing into and drawing air in and out of the tube. You will hear a clicking noise when you do this. Reattach the hose and try the system. Also, you have to unplug the unit for at least 10 minutes and then plug it back in to reset the controls. If the "Guardian" system still senses the fumes, it will not allow the unit to kick on. I could be awhile for the fumes to disapate before it will work. Try putting a low volume fan on the base of the unit to try and keep fresh air moving around the "Guardian" sensor.
Posted on Apr 05, 2009
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
you need to replace the upper thermostat, it has the overtemp switch made to it. Also make sure that the thermostat is pushed up tight to the tank with no space or object between them.
Posted on Mar 13, 2010
There could be blockage in your water heaters venting on the outside of the home. It sound like the high limit switch has been tripped. Try unplugging the tank and plugging it back in. this will reset the tank. if the problem persists you will want to call your provider for service.
Posted on Jul 29, 2010
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