Read on to learn how to diagnose and address the most common water heater problems, and enjoy piping hot water again in no time! Check the Power Supply to the Water Heater. Before you can turn on your water heater, it is important to ensure that it is receiving power. Here are the steps to check the power supply: 1. Locate the Circuit Breaker. turn on an electric water heater.
Step 3- after 5 minutes turn the power and gas supply back on. Step 4- turn the switch on the water heater to the 'on' position. If the burner fails to light, you will have two more tries before lockout. Step 5- if the lockout occurs, shut off the water heater switch for 5 seconds and then turn it back on. The system will reset during that.. Last Updated On March 22, 2025. Updated on February 27, 2025. by