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Why is the combined non-return/safety valve producing a popping sound or draining on my GeoSpringTM Solar Water Heater?

CAUTION: For your safety, DO NOT attempt repair of electrical wiring, controls, heating elements, or other safety devices. Refer repairs to qualified service personnel.

Possible Cause: Pressure buildup caused by thermal expansion to a closed system.
What To Do: This is an unacceptable condition and must be corrected. See the installation instructions for a thermal expansion tank at the cold water inlet. Contact your local installer, plumbing contractor, or previously agreed upon service agency to correct this.

This answer is applicable for the following models: GT50C10BAM, GT40C10BAM, GT25C10BAM.

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