To Next PageTo Next PageWhat to do if A.O. Smith GPDH T&P valve is leaking?
If your A.O. Smith water heater's Temperature and Pressure (T&P) relief valve is leaking, it could be due to: * Thermal expansion in a closed water system. To resolve this, install a thermal expansion tank. Important: do not plug the T&P valve. * An improperly seated valve. Check the relief valve for proper operation, ensuring it's not blocked. Again, do not plug the T&P valve.
How to fix water leaks from A.O. Smith GPDH Water Heater?
If you notice water leaks from your A.O. Smith water heater, consider these possible causes and solutions: * Improperly sealed connections at the hot or cold supply, relief valve, drain valve, or thermostat threads. Try tightening these threaded connections. * Leaks from nearby appliances or water lines. Inspect other appliances in the vicinity of the water heater. * Condensation of flue products. Refer to the “CONDENSATION” section.
Why A.O. Smith GPDH Water Heater lights but goes out quickly?
If your A.O. Smith water heater lights but goes out in 4-5 seconds, the outlet polarity may be reversed. Test the polarity and correct it.
Why my A.O. Smith GPDH sounds sizzling or rumbling?
Sizzling or rumbling sounds coming from your A.O. Smith water heater can be caused by: * Condensation dripping on the burner. Refer to the CONDENSATION section. * Sediment buildup at the bottom of the tank. Clean the sediment from the tank. Refer to the DRAINING instruction in the Maintenance section of the manual.
What causes A.O. Smith GPDH Water Heater vent pipe to be too hot?
A vent pipe that is too hot (above 170°F) on your A.O. Smith water heater may be due to: * A defective air flow restrictor. Immediately take the unit out of service and call an A.O. Smith service representative. * Insufficient dilution air mixing with flue gases in the inlet tee. Ensure proper dilution air is provided for combustion and flue temperature dilution. Refer to the “INSTALLATION” section. * Dilution air that is too hot for mixing with flue gases. Check for heat sources around the intake terminal and any blockage of the dilution air leg, as the supply air may be too hot. * The wrong burner orifice. Install the correct orifice.
Why A.O. Smith GPDH has yellow flame?
A yellow flame in your A.O. Smith water heater could be due to: * Dirt in the burner ports. Turn off the heater and gas, then clean the burner head. * A restricted combustion air path. Check the intake venting arrangements for obstructions. * Not enough dilution air for proper combustion. Check the intake venting arrangement for obstructions.
Why A.O. Smith Water Heater smells bad?
Unpleasant odors from your A.O. Smith water heater can stem from: * High sulfate or mineral content in the water supply. Address this by draining and flushing the heater thoroughly, then refilling it. * Bacteria in the water supply or a thermostat set too high. Chlorinate the water supply. Refer to TEMPERATURE REGULATION.
What to do if A.O. Smith GPDH Water Heater is in lockout?
If your A.O. Smith water heater is in lockout, consider the following potential causes and solutions: * The gas supply might be off or too low to operate. Ensure an adequate gas supply. * The hot surface igniter may not be positioned correctly. Check its positioning. * There might be low voltage to the water heater. Verify and correct the voltage supply. * The electrical polarity to the unit could be incorrect. Test and correct the polarity.
How to deal with condensation in A.O. Smith GPDH Water Heater?
For condensation issues with your A.O. Smith water heater: * If there's water on the floor under the heater, see the “CONDENSATION” section. * If water is dripping from the pan, provide a drip “TEE” to catch the condensation; see Figure 1.
How to fix error in the hot surface igniter circuit of A.O. Smith GPDH?
To address an error in the hot surface igniter circuit of your A.O. Smith water heater: * Check that all wiring is correct and secure. * Replace the hot surface igniter.
General| Brand | A.O. Smith |
|---|---|
| Model | GPDH |
| Category | Water Heater |
| Language | English |
Information on ordering replacement parts and recommended delimer products.
Safety precautions regarding external damage to the water heater.
Warning about corrosion from chemical vapors affecting combustion and vent systems.
Safety advice for periods of inactivity, including hydrogen gas risks.
Statement that insulation blankets are not necessary for A.O. Smith products.
Specific safety warnings and instructions for propane or LP gas models.
Specifies the qualified tradesman skills needed for installation.
Explanation of closed water systems and potential issues like thermal expansion.
Details on the temperature and pressure relief valve installation and requirements.
General installation requirements and code compliance.
Guidance on selecting a safe and appropriate location for the water heater.
Instructions for connecting water supply lines to the heater.
Instructions and warnings for connecting the gas supply to the heater.
Information regarding air supply and exhaust requirements for combustion.
Clearances required for venting the unit through an outside wall.
Pre-operation checks including water filling and gas smell.
Step-by-step guide for safely lighting and operating the water heater.
Procedure for safely shutting off the gas supply to the appliance.
Detailed sequence of operations for the hot surface ignition system.
Specific requirements for installing the heater at high altitudes.
Information on the manual reset switch for the venting system.
Procedure for checking and cleaning the main burner for optimal performance.
Explanation of the built-in limit switch and its function.
Routine inspection requirements for the venting system.
Annual inspection requirements for the power venter motor.
Annual check to ensure the temperature and pressure relief valve is functioning.
Instructions for draining the water heater to prevent freezing damage.
Explanation of common condensation issues and their causes.
Information on the anode rod's role in corrosion protection and maintenance.
Guidance for diagnosing and resolving common water heater problems.
Procedure to check thermostat operation and gas supply pressure.
Troubleshooting common issues indicated by the water heater control system's LEDs.
Specific conditions and exceptions that apply to the water heater warranty.
Clarification of warranty coverage for service and labor costs.
Details on the duration and limitations of implied warranties.
Steps to follow when initiating a warranty claim.
Legal disclaimers regarding the extent of the manufacturer's liability.
Fields for recording essential information for warranty purposes.
