Rheem Warrior DVX Series Use and Care Manual - Page 21

Problem Rumbling noise Possible Causes What To Do Scale and sediment in tank. ● Clean tank. Relief valve producing popping noise or draining Pressure build up ● This is an unacceptable condition and must be caused by thermal corrected. Contact the water supplier or plumbing expansion to a contractor on how to correct this. Do not plug the closed system. relief valve outlet. Rattling noise Internal heat trap ● This is normal for heat trap fittings when in operation during periods of fittings in operation. and does not indicate a need for service. water usage Not enough or no hot water Water usage may have ● Wait for the water heater to recover after an abnormal exceeded the capacity demand. of the water heater. Low gas pressure. ● Check gas supply pressure and manifold pressure. The pilot burner may be out. ● Check the pilot. If necessary, relight using the instructions in the "Lighting the Water Heater" section of this manual. The gas control (thermostat) may ● See the "Water Temperature Setting" of the water heater be set too low. section of this manual. Leaking or open hot water faucets. ● Make sure all faucets are closed. Cold water inlet ● This is normal. The colder inlet water takes longer temperature may be to heat. colder during the winter months. Water is too hot The gas control (thermostat) ● See the "Temperature Setting of the Water Heater" is set too high. section of this manual. Gas control (thermostat) ● Contact a qualified service technician to replace the gas defective control (thermostat). ! CAUTION: For your safety DO NOT attempt repair of gas piping, thermostat, burners, vent connectors or other safety devices. Refer repairs to qualified service personnel. 21