Rheem Professional Powered Damper Series Use and Care Manual - Page 23
Refer to the Gas Valve Error Codes information
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Before You Call For Service... Troubleshooting Tips Save time and money! Review the charts on the following pages first and you may not need to call for service. This water heater incorporates a combustion shut off device that shuts the operation of the water heater down if undesirable combustion conditions occur, such as the presence of flammable vapors or blockage of the combustion air inlet openings. Please contact a Qualified Service Technician if this occurs. Problem Possible Causes What To Do Rumbling noise Scale and sediment • Drain the water heater to remove scale and sediment from the tank. Refer to the "Drain the Water Heater" information in the "Care and Cleaning of the Water Heater" section of this manual. Relief valve producing popping noise or draining Pressure build up caused • by thermal expansion to a closed system. This is an unacceptable condition and must be corrected. Contact the water heater supplier or plumbing contractor on how to correct this. Do not plug the relief valve outlet. Not enough or no hot Water usage may have • Wait for the water heater to recover after an abnor- water exceeded the capacity of mal demand. the water heater. Low gas pressure • Check gas supply pressure and manifold pressure. The gas control (thermo- • Refer to the "Water Temperature Setting" informa- stat) may be set too low. tion in the "Installing the Water Heater" section of this manual. Leaking or open hot wa- • Make sure all faucets are closed. ter faucets. Check valve error codes. • Refer to the "Gas Valve Error Codes" information in the "Gas Valve LED Codes" section of this manual. "ON/OFF" switch turned • Turn "ON". off. Gas control (thermostat) shut-off device has tripped. • Contact a qualified service technician. Combustion shut-off system tripped. • Contact a qualified service technician. Water is too hot Gas control (thermostat) • See the "Water Temperature Setting" in the "Install- is set too high. ing the Water Heater" section of this manual. Gas control (thermostat) • Contact a qualified service technician to replace the is defective. gas control (thermostat). CAUTION: For your safety DO NOT attempt repair of gas piping, gas control (thermostat), burners, vent connectors, dampers, or other safety devices. Refer repairs to qualified service personnel. 23