Question about Bosch ProTankless GWH 715 ES LP Tankless Water Heater, Propane

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What does Error code A3 mean and how to correct it ?

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Http://www.bosch-climate.us/files/201008311810050.G3-11_A3-E3_Error_Code_Troubleshooting.pdf
Check out Link for help.
I have same problem.

Posted on Dec 21, 2010

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