Nobody enjoys being treated to a surprise cold shower. If you find yourself without hot water, then you probably want a solution to your water heater not working—and fast. We have put together a few reasons as to “Why is my water heater not working?”
Why is My Water Heater Not Working?
No Power or Gas
The majority of the time, the level of gas supply is a significant problem. If you determine that there is no hot water and the gas water heater is on, check the state of your gas supply.
You might have turned off the gas supply without even realizing it, or it could be that the switch off button has a defect. When this happens, switch your gas to “pilot” and take out the cover around the pilot light and the burner.
It can be difficult to diagnose thermostat issues. Generally, thermostats are less prone to failure than heating elements. However, testing the thermostat is necessary when your water heater stops working.
There will be no hot water at all if the thermostat goes out in a single-element heater. There’s often a thermostat for each element in two-element water heaters. The thermostat can control the upper element in the top of the tank. It will shut down the power to the upper element and reroute power to the lower element when the water in the top gets hot. In the event that the lower thermostat goes out, the heater will still produce a limited amount of hot water. Conversely, if the upper thermostat goes out, there will be no hot water at all.
No Pilot Light
If you no longer see a flame, this means your pilot light is off. When this occurs, all you need to do is relight it.
However, most of the new heaters no longer come with pilot lights. Instead, they have glow plugs or spark ignitors. If this is the case, you will most likely need to call a trained professional at College Station Plumbing.
Clogged Flame Sensor
The gas electronic-ignition system is typically very safe and reliable. It is common in many gas applications including water heaters, furnaces and boilers. For gas water heaters, the gas electronic-ignition system employs a solid-state circuit that controls flame ignition and maintenance. Instead of utilizing a thermopile or thermocouple to produce a flame, they use a sensor to measure voltage.
If the flame sensor becomes clogged, this can keep the current from being read by the electronic-control sensor. Generally, the sensor will begin working again after being cleaned.
Temperature and Pressure-Relief Valve Failed
Temperature and pressure-relief (TPR) valve is a safety feature to relieve excessive pressure if the water temperature inside the tank overheats. In the event of a failure of this valve, the water heater could explode with the power of a small rocket-like bomb. This can create potential cause for property damage or even death. If you notice a leak in the TPR valve, then it needs immediate replacement.
Keep in mind that the TPR should never be capped off. This can result in pressure rising to dangerous levels. Due to this, the TPR valve and water heater require annual testing to confirm both are working properly.
These are just a few of the common reasons as to “Why is my water heater not working?” If you notice your hot water heater is not working, don’t hesitate to contact a professional plumber at College Station Plumbing with the link below.