Richmond Tankless Water Heater Error Codes. You can continue to run your hot water heater with fault code 92, but the flow of hot water will be reduced. As a result, your rheem tankless water heater will show the e5 error code.
Rheem water heater code 33. • insure manifold gas pressure is present and within requirement. If no error code, run the shower and see what the unit is doing.