Question about Rinnai RHFE-1004FA 38,400 BTU Energy Saver Ductless Heater - Natural Gas

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Rinnai RHFE 1004F Error code 49

My Rinnai will light burner then shuts down with error code 49

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Chandler Ede

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A 49 error code is caused by the pressure switch either not proving or a bad component. Check the hose attached from the plastic elbow located behind the heater going to a small square pressure switch found inside the heater. It may have come loose or a mouse may have taken a bite out of it. Also while you are behind the heater, pull off the hose that looks like a vacuum cleaner hose and run the heater with it unattached. If it runs, you have a blockage in the vent. If not, take a flashlight and go outside to the vent. Look down the center pipe for any obstructions. If it still does not work, you may need a new pressure switch.

While the front panel is off the heater, cycle the heater to attempt a start. You want to make sure the blower turns. If it does not, check the wire connections to it. You may be looking at a bad blower. If it is turning but still does not start, we are looking at a bad pressure switch.

Let me know what you find, I may have a switch or blower motor that you can purchase.

Posted on Nov 01, 2007

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Overall you need to check for debris.

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http://www.rinnai.us/documentation/downloads/Error_Codes-Tankless_Water_Heaters.pdf

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