Question about Bosch ProTankless GWH 715 ES LP Tankless Water Heater, Propane
I do not know how to get device working after it stopped detecting hot water in inlet velve. Water crossover fixed but device does not start
Check for obstruction in your watervalve. It has a flow meter, that needs to spin freely. Remove the watervalve and blow through it, you should hear it spin.
Also make sure you dont have an error code showing. Hold down your reset button for 5 seconds to reset an error code and get back to your set temp.
Posted on May 06, 2014
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Posted on Jan 02, 2017
The vent pipe you use is the correct size for the heater.Longer runs require bigger pipe.I also would check to see if the water is getting to hot.
Posted on Mar 16, 2009
BOSH AQ 250 On demand propane water heater ran out of propane, got gas now, but get EC flashing on the display and the unit won't fire? Lost manual, any suggestions. Thanks, Jim
Posted on Feb 23, 2011
SOURCE: Bosch GWH 715 ES flashing
Above are the manuals required to diagnose and service your error code.
EA: No flame ionization detected with water flow.
Verify that all manual gas shut off valves are open. Check gas type. Reset error code and open a water tap to cycle the heater in an effort to purge air on new installations. Cycling hot water tap on and off multiple times may be necessary. If heater still faults with EA error code, have a licensed gas technician properly purge air out of the gas line leading to the water heater. Check three wire connections to ignition group on the lower front of the heat exchanger are secure. Check gas pressure. Check venting specifications are met. Improper venting may cause premature failure of the flame sensor rod. Check that the minimum power fan speed has been adjusted to the proper value. Observe inside the viewing window of the heat exchanger when a hot water tap is opened. Sparking should be followed by a steady blue flame. If flame is unstable or yellow with proper gas pressure.
Posted on Jul 08, 2011
SOURCE: Where can i download a
Are you looking for sell sheet pdf, or install-care manual, or service manual.
Search: GWH 715 ES manual .pdf
Adding .pdf to search parameter helps locate manuals.
Sell sheet with venting overview, technical and product specs:
Manual for ES high altitude, with installation, error codes and troubleshoot:
I cannot find a service manual, or service bulletins:
Posted on Aug 11, 2011
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