Gas water heaters can be used immediately and are popular among many people. However, any machine that works for a long time can encounter certain problems, and gas water heaters are no exception. If used for a long time, some faults may occur. Today, Xiaoju will help you organize some common faults and solutions for gas water heaters.

Common faults of gas water heaters

Fault 1: stalling during use

If the engine stalls during use, the following procedures can be followed for inspection:

a. Check if all the gas valves are not open. If not, it is necessary to open all the gas valves.

b. After opening, the hot water can be continuously turned on and off for heating until it catches fire. Because the gas pressure is not suitable, too low can also cause stalling during use.

Tip: The process of turning on and off the hot water switch requires waiting for more than 5 seconds before it can be turned on again.

c. Ask professional maintenance personnel to check the water pressure, as the cause of the malfunction may be that the water pressure of the cold water supply is too low. If the starting water pressure is greater than 0.035MP, the water volume control screw under the gas valve body should be adjusted to reduce the water output.

d. In addition to the above items, it is also necessary to ask maintenance personnel to clean the carbon deposits inside the heat exchanger. If the water controller or pulse generator malfunctions, please ask maintenance personnel to handle and replace it. It is also necessary to check whether the leads are loose, whether the solenoid valve and flame probe are faulty, which are all possible reasons for stalling during use.

Fault 2: The water heater cannot start

When this situation occurs, the handling method is somewhat similar to that of Fault 1. Below, we will briefly explain the methods for handling this situation.

a. Open all valves

b. There may be air inside the gas pipe, and the hot water switch should be continuously turned on and off until it catches fire to expel the air.

c. Check the main cold water supply valve and open it.

d. Check if the water pipe has frozen. If it has frozen, it needs to wait until it melts before use.

e. The water pressure of the cold water supply is too low, check the water pressure. If there are no issues with these, check the power supply to see if the contact is complete, or if some are using dry batteries and the battery is dead. If it is dead, replace the battery.

f. In addition, there are also issues with water controllers, pulsers, leads, microswitches, solenoid valves, and battery polarity reversal.

Fault 3: Yellow flame with smoke appearing

Fault cause: blockage in the burner or heat exchanger

Treatment method: Maintenance personnel are required to clean the debris inside the burner and the carbon deposits inside the heat exchanger.

Fault 4: Abnormal flame with odor

Fault cause:

1. Insufficient fresh air supply.

Treatment method: Immediately improve ventilation to provide sufficient fresh air.

2. Blockage in the burner.

Handling method: The maintenance personnel should clean the debris inside the burner.

3. The heat exchanger is blocked.

Treatment method: The maintenance personnel should clean the carbon deposits inside the heat exchanger.

Fault 5: Abnormal sound during ignition

Fault cause:

1. The gas pressure is not suitable, too high.

Solution: Continuously turn on and off the hot water switch until it catches fire.

2. Insufficient fresh air supply.

Treatment method: Immediately improve ventilation to provide sufficient fresh air.

3. Blockage in the burner.

Handling method: The maintenance personnel should clean the debris inside the burner.

Fault 6: The water is still not hot when adjusted to a high temperature position

Fault cause:

1. The gas valves are not fully open

Handling method: Open all valves

2. The gas pressure is not suitable, too low.

Solution: Continuously turn on and off the hot water switch until it catches fire.

3. The water temperature adjustment method is incorrect.

Treatment method: Refer to the hot water temperature adjustment in the user manual

4. The water controller has malfunctioned.

Handling method: Maintenance personnel handling

Fault 7: Water too hot at low temperature position

Fault cause:

1. The water temperature adjustment method is incorrect.

Treatment method: Refer to the hot water temperature adjustment in the user manual

2. The water controller has malfunctioned.

Handling method: Maintenance personnel handling.

Fault 8: The fire goes out at low temperature position

Fault cause: The water pressure of the cold water supply is too low.

Solution: The maintenance personnel should check the water pressure.

Fault 9: The fire does not extinguish after turning off the water heater

Fault cause: The water controller has malfunctioned.

Handling method: Maintenance personnel handling.