To Next PageTo Next PageWhat to do if A.O. Smith Water Heater is leaking?
If you notice water leaks from your A.O. Smith Water Heater, first, check all threaded connections such as hot or cold supply connections, the relief valve, drain valve, or thermostat threads. Tighten any connections that seem loose. Also, inspect other appliances and water lines near the water heater for any leakage.
Why A.O. Smith FCG-75 Water Heater burner will not stay lit?
If the burner on your A.O. Smith Water Heater won't stay lit, it could be due to several reasons. A defective thermocouple TCO might be the cause, requiring replacement of the pilot assembly. Alternatively, high ambient room temperature or a dirty/clogged air intake screen could be the issue. Try cleaning and reinstalling the air intake screen. If the flame arrestor openings are blocked or the gas control is defective, it's recommended to contact a service agency or replace the gas control, respectively.
How to fix A.O. Smith FCG-75 pilot that will not light?
If the pilot light of your A.O. Smith Water Heater won't light, ensure the main gas supply is turned on and check that the gas control knob is correctly positioned. Adjust the igniter tip if it's more than 1/8" from the pilot hood. Other potential causes include a thermocouple malfunction, a broken electrode or electrical wire, or a malfunctioning Piezo Ignitor generator. In such cases, replacing the pilot assembly or Piezo Ignitor generator may be necessary. Also, reconnect the wire connector to the spark ignitor if it is disconnected.
What to do if A.O. Smith FCG-75 T&P valve is leaking?
If your A.O. Smith Water Heater's T&P valve is leaking, it might be due to thermal expansion in a closed water system. In this case, install a thermal expansion tank. Also, check the relief valve for proper operation, ensuring it's correctly seated.
Why does the pilot light keep going out on my A.O. Smith FCG-75 Water Heater?
If the pilot light on your A.O. Smith Water Heater keeps going out, it might be due to a dirty pilot burner. Try cleaning the pilot assembly. Also, check the air intake screen and clean and reinstall it if it's dirty or clogged. Ensure the thermocouple tip is correctly positioned in contact with the pilot flame. If these steps don't resolve the issue, the thermocouple itself may be malfunctioning and need replacement.
Why is my A.O. Smith Water Heater not producing enough hot water?
If your A.O. Smith Water Heater is not providing enough hot water, first check if the heater is lit and the thermostat is on. If not, consult the lighting instructions. If the thermostat is set too low, adjust it according to the temperature regulation guidelines. If the heater is undersized, reduce your hot water usage. Also, consider that unusually cold incoming water will require more time for the heater to reheat, and leaking hot water pipes or fixtures should be checked and repaired by a plumber.
Why is the water from my A.O. Smith Water Heater too hot?
If the water from your A.O. Smith Water Heater is too hot, it's likely that the thermostat is set too high. Refer to the temperature regulation guidelines to adjust it to a more comfortable and safe setting.
Why does my A.O. Smith Water Heater have smelly odors?
If you notice smelly odors coming from your A.O. Smith Water Heater, it could be due to high sulfate or mineral content in the water supply. To resolve this, drain and flush the heater thoroughly, then refill it. Another possible cause is bacteria in the water supply, in which case you should chlorinate or aerate the water supply.
Why A.O. Smith Water Heater is sizzling and rumbling?
If your A.O. Smith Water Heater is making sizzling or rumbling sounds, it is likely due to sediment or calcium buildup in the bottom of the tank. To resolve this, clean the sediment from the tank following the draining instructions in the Maintenance section of the manual.
General| Category | Water Heater |
|---|---|
| Manufacturer | A.O. Smith |
| Model | FCG-75 |
| Type | Gas |
| Fuel Type | Natural Gas |
| Capacity | 75 gallons |
| Warranty | 6 years limited |
Defines roles like Qualified Installer, Service Agency, and Gas Supplier for proper installation and service.
Critical warnings and precautions regarding fire and explosion risks.
Essential safety information on the dangers of carbon monoxide and its detection.
Provides introductory information about the water heater and its intended use.
Essential preparatory steps before beginning the water heater installation.
Provides a general overview of the water heater installation process.
Identifies and describes the main components and parts of the gas water heater.
Explains the use of mixing valves to control hot water temperature for safety.
Details critical factors for selecting an appropriate and safe location for the water heater.
Specific safety warnings and restrictions for installing near areas with flammable liquids or vapors.
Information regarding the use and necessity of external insulation blankets for the water heater.
Critical requirements for supplying adequate combustion air and ventilation for safe operation.
Guidelines for providing combustion and ventilation air directly from the outdoors.
Instructions and safety warnings for connecting the cold and hot water piping to the heater.
Warning against connecting the heater to non-potable water systems or introducing toxic chemicals.
Instructions for insulating the temperature-pressure relief valve and associated piping for protection.
Details the critical safety function and operation of the temperature-pressure relief valve.
Step-by-step procedure for filling the water heater tank with water before operation.
Requirements, procedures, and safety considerations for properly venting the water heater to the outdoors.
Instructions and safety precautions for connecting the gas supply line to the water heater.
Explains the purpose and installation of sediment traps in gas lines to prevent debris entry.
Critical safety checks and procedures to follow before lighting the water heater.
Detailed steps for safely lighting the pilot and main burner of the water heater.
Guidance on setting the water temperature for safety and optimal performance.
Discusses factors influencing the initial operation and startup of the water heater.
Describes how to perform a safety check on the draft hood's functionality.
Explains the causes of condensate formation and potential operational impacts.
Addresses common operational issues and conditions encountered with the water heater.
Addresses the causes of odors in hot water, often related to the anode rod.
Explains common reasons for air appearing in hot water faucets and how to address it.
Details the safety mechanism that automatically shuts off the gas supply if water temperature becomes excessively high.
Outlines recommended regular maintenance tasks for the water heater.
Outlines annual checks for obstructions, damage, or deterioration of the venting system.
Describes annual visual inspection and cleaning procedures for the main and pilot burners.
General advice on maintaining a clean area around the water heater for safety and efficiency.
Explains the importance of inspecting the anode rod for tank corrosion protection.
Details the procedure for testing the temperature-pressure relief valve's functionality.
Step-by-step instructions for draining the water heater tank for maintenance or storage.
Instructions for replacing the washer in the drain valve to prevent leaks.
Guidance on when and how to contact qualified service personnel for repairs or issues.
A guide to identifying common sources of water leaks around the water heater.
A list of available replacement parts for the water heater.
A comprehensive guide to diagnose and resolve common problems with the water heater.
