General Electric GE GeoSpring Hybrid Water Heater GEH50DNSRSA "error f4" Questions

...F4 error. Call GE Otherwise there are few service manuals for this line of products http://waterheatertimer.org/GE-heat-pump-manuals-by-date.html ...

...error. HPF code F4.Unit is 2 years old. What could be possable cause? Type, brand, model number of water heater is not known.If you have GE heat pump water heater, the parts are covered after first ...