When should a 24v hot surface igniter be replaced?

A hot surface igniter, generally used in gas appliances, is designed to operate within a specific current range. If the amp draw exceeds a certain threshold, it indicates that the igniter is likely experiencing excessive wear or a failure, which can compromise its performance and the safety of the appliance.

In this case, the correct answer identifies that the igniter should be replaced if the amp draw exceeds 4.75 amps. This threshold is set based on the manufacturer's specifications for optimal igniter operation. Exceeding this level of current could cause the igniter to overheat and fail prematurely, which poses a risk not only to the igniter itself but potentially to the entire appliance as well.

Keeping track of amp draw is essential for proper maintenance and ensuring that gas appliances operate safely and efficiently. Thus, knowing when to replace components such as the hot surface igniter is crucial for the longevity of the equipment and for maintaining the safety standards required in commercial foodservice operations.