What is an indicator of low voltage in a burner control system?

In a burner control system, relay chattering is a key indicator of low voltage. When the voltage is insufficient, the relay may not receive enough power to operate correctly, causing it to rapidly open and close. This chattering can disrupt the normal operation of the burner system, leading to unreliable performance.

The underlying issue with low voltage can stem from various factors, including poor electrical connections, undersized wiring, or issues with the transformer providing power to the system. Consequently, monitoring and resolving relay chattering is critical to ensure efficient burner operation and maintain safety within the heating system.

While flame failure, thermostat malfunction, and excessive noise may also highlight problems in the burner control system, they are not direct indicators of low voltage like relay chattering is. Each of these issues could arise from a separate set of problems unrelated to voltage fluctuations.