Troubleshooting a Hot Water Boiler

A hot water boiler is a critical element in any home. All activities from washing clothes to taking a shower or using the dishwasher are dependent on the hot water boiler. While repairs can prove to be expensive, there are ways to troubleshoot issues yourself.

The Circuit Breaker

Go to the circuit breaker. The reason the hot water boiler is not working could be that the circuit breaker has either blown or tripped. In cases where the circuit breaker has tripped, make sure to reset it. If the fuse has blown, replace the fuse.

Thermostat Check

Make sure to check the hot water boiler thermostat. Ensure that the thermostat has been set to "heat" and that the setting of temperature is a couple of degrees over the normal room temperature. This will turn the hot water boiler "on" and should start it working normally.

Check the Gauge

Normally, the gauge on the hot water boiler should read as the combination of pressure and systems temperature. The minimum reading needs to be 12 psi. If you find the gauge reading is less than 12 psi, you will need to add more water to the system. You can watch a particular lever located on the hot water boiler that keeps changing as additional water is added to the boiler.

Electric Ignition or Pilot

It could be that the pilot of free standing nature has blown. In such a case, you need to relight it. Some of the hot water boiler versions have electronic ignitions.

Control Valve

You need to ensure that the hot water boiler control valve is closed. The control valve leads up to the burner in the hot water boiler and it needs to be closed. The flow of propane or natural gas through the control needs to be kept closed every time. Make sure to keep flammable items and debris far away from the hot water boiler else they can catch fire easily.


The hot water boiler tends to collect deposits over a period of time. Hence, you need to ensure that the system is flushed and cleaned regularly. You can check the hot water boiler at regular intervals for such deposits.

Summer Maintenance

During winter, most hot water boilers perform to their peak capacity. This is why maintenance during summer assumes more importance. In summer, you need to flush out all the liquid from the hot water boiler as well as remove buildup and clean the interiors. Make sure to check if additional components are required for replacement during this period. Install brand new gaskets and refill the hot water boiler. If the hard water has produced extra lime scale, de-scale the hot water boiler. Ensure all moving parts are thoroughly lubricated. These include parts like the pumps, fan etc. Make sure to check if there are leaks present. Before the winter season starts, make sure to perform a general check up of the hot water boiler.

Following these steps will ensure that your hot water boiler remains in top performing condition at all times! Ensuring proper maintenance procedures act as preemptive measures to prevent issues in the future.