Question about Bosch ProTankless GWH C 800 ES LP Tankless Water Heater, Propane
Bosch backflow temperature sensor mod gwh c 800 ctdr efs lp ERROR CODE E4
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: I have a Bosch GWH
A lot of factors, internal and external, can cause this problem ranging from bad PC board to plumbing problem.
Since you have no error code, it could be plumbing,
Open following link for useful Bosch troubleshooting information including Bosch support and typical manual for 2700 gas tankless:
For folks with Rheem tankless:
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Posted on Mar 26, 2011
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