If your heat pump water heater is more than 10 years old, you will have to evaluate the performance of the standing pilot light. The process of lighting the pilot should be done carefully following the instructions of the manufacturer. Models with intermittent pilot lights will create a spark to light up the pilot flame. You will be able to hear several clicking sounds as well. In the case of advanced hot water systems, the hot surface ignitor will glow red when lighting the burner flames. The ignitor bears a close resemblance to a small electric oven heating element. The fragile component can get damaged over some time. You should be extremely careful while dealing with hot surface ignitors.

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