GE PFSS5NJWSS User Manual page 39

Return Duct Heaters (cont. )
3. Inspect the wiring attached to and exiting the main board terminal J9
and inspect wiring at the defrost thermostat location. Repair exposed
faulty wiring or connections.
The return duct heaters are integral to the foamed in place
internal ductwork of the refrigerator and are not replaceable.
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mabe CONFIDENTIAL AND PROPRIETARY INFORMATION-NOT FOR PUBLIC DISCLOSURE. January 2008