Electronic ignition is a modern alternative to the traditional pilot light ignition system commonly found in older water heaters. This system operates by using an electronic spark to ignite the gas that heats the water in the tank.
When the hot water tap is turned on, a sensor detects the flow of water and signals the electronic control board to send a high-voltage electric current to the spark electrode. The electrode creates a spark that ignites the gas burner, which heats the water in the tank. Once the water reaches the desired temperature, the control board shuts off the gas supply and the burner extinguishes.
Compared to the pilot light ignition system, electronic ignition is more energy-efficient because it only uses gas when hot water is needed. It is also safer because there is no continuous flame that could potentially cause a fire or release dangerous gases into the home.
In other words, an electronic ignition water heater is a convenient and efficient appliance that provides hot water on demand. However, just like any other appliance, it may encounter some problems, one of which is failing to light. If you are experiencing this issue, there are several things you can check to diagnose and fix the problem.
Why electronic ignition water heater won’t light:
Below we discuss the reasons why an electronic ignition water heater won’t light.
A faulty igniter, a damaged flame sensor, or a malfunctioning gas valve can lead to ignition failure. Any loose wires may also become the reason why the ignition won’t take place.
Another possible cause of the problem is a clogged or dirty burner. If the burner is dirty, neither will it be able to ignite the gas properly nor the gas would flow through it, so the heater won’t ignite.
Low gas pressure:
Another reason why an electronic ignition water heater won’t light is low gas pressure. If the gas pressure is too low, the heater won’t receive enough fuel to ignite.
A faulty thermostat can also cause an electronic ignition water heater to fail to light. If the thermostat is not working correctly, it won’t send the signal to the gas valve to open, preventing the heater from igniting.
How to fix an electronic ignition water heater that won’t light:
Follow the steps below to diagnose and fix the complication:
Check the power source:
First, make sure that the water heater has power. Check the circuit breaker or fuse box to ensure that the breaker is not tripped or the fuse is not blown. If the breaker has tripped or the fuse has blown, reset or replace it and try turning the water heater on again.
Check the gas supply:
You may check the gas supply. Make sure that the gas valve is open, and that there are no leaks in the gas line. You can also check the gas pressure to ensure that it is within the recommended range. In case, if you smell gas, turn off the gas supply immediately and call a professional to inspect the water heater.
Clean the burner:
Cleaning the burner might help you take care of the problem. So, first, you may turn off the gas and water supply to the water heater and then remove the burner to clean it thoroughly with a wire brush or compressed air.
Replace faulty components:
If the ignition system, flame sensor, gas valve, or thermostat is faulty, you will need to replace them. Because repairing or replacing parts is a complicated job that’s why it’s best to hire a professional plumber or technician to take care of the whole thing safely, ensuring the correct installation of the parts.
An electronic ignition water heater, not lighting can be exasperating, especially if you rely on it for hot water. However, by understanding the common causes of ignition failure and taking the necessary steps to fix them, you can ensure that your water heater works efficiently and effectively. You must remember to always prioritize your safety when working with gas appliances and consider seeking professional help if you are unsure about any steps.