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A defrost control system for a self-defrosting refrigerator is configured to monitor a compressor load, determine whether at least a first defrost cycle is required based on the compressor load, execute at least one defrost cycle when required; and regulate the defrost cycle to conserve energy. A co

A defrost control system for a self-defrosting refrigerator is configured to monitor a compressor load, determine whether at least a first defrost cycle is required based on the compressor load, execute at least one defrost cycle when required; and regulate the defrost cycle to conserve energy. A controller is operatively coupled to a compressor, a defrost heater, and a refrigeration compartment temperature sensor. The controller makes defrost decisions based on temperature conditions in the refrigeration compartment in light of other events, such as refrigerator door openings, completed defrost cycles, and power up events. Defrost cycles are automatically adjusted as operating conditions change, thereby avoiding unnecessary energy consumption that would otherwise occur in a fixed defrost cycle.

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A defrost control system for a self-defrosting refrigerator is configured to monitor a compressor load, determine whether at least a first defrost cycle is required based on the compressor load, execute at least one defrost cycle when required; and regulate the defrost cycle to conserve energy. A co

A defrost control system for a self-defrosting refrigerator is configured to monitor a compressor load, determine whether at least a first defrost cycle is required based on the compressor load, execute at least one defrost cycle when required; and regulate the defrost cycle to conserve energy. A controller is operatively coupled to a compressor, a defrost heater, and a refrigeration compartment temperature sensor. The controller makes defrost decisions based on temperature conditions in the refrigeration compartment in light of other events, such as refrigerator door openings, completed defrost cycles, and power up events. Defrost cycles are automatically adjusted as operating conditions change, thereby avoiding unnecessary energy consumption that would otherwise occur in a fixed defrost cycle. definition of "scarf". c wiring connected to the solar cell module through the roof base member such that a second end portion of the electric wiring reaches a position on a back face of the roof base member which has no solar cell module thereon, the position being situated in an area of the back face on the outdoor portion side and which is outside the inner face of said partition wall. 12. A method according to claim 11, further comprising the step of forming a throughhole at a portion of the roof base member on the outdoor portion side and which is outside the inner face of the partition wall, wherein in the drawing step, the second end portion of the electric wiring is drawn through the throughhole. 13. A method according to claim 11, wherein the roof base member comprises a sheathing roof board. 14. A method according to claim 11, further comprising the step of providing a roof accommodating member with wire-drawing means at a roof end portion of the building, wherein in the drawing step, the second end portion of the electric wiring is drawn through the wire-drawing means of the roof accommodating member. 15. A method according to claim 14, wherein the roof accommodating member comprises a wide lath, a throughhole is formed at the wide lath, wherein in the drawing step, the electric wiring is drawn through the throughhole. 16. A method according to claim 14, wherein the roof accommodating member comprises a wide lath, a throughhole is formed at the wide lath, wherein in the drawing step, the electric wiring is drawn through the throughhole. 17. A method according to claim 11, wherein the solar cell-baring roof comprises a shed roof having a ridge accommodating member, a throughhole is formed at the ridge accommodating member, wherein in the drawing step, the second end portion of the electric wiring is drawn through the throughhole. 18. A method according to claim 11, wherein the electric wiring comprises a power output wiring for outputting an electric power generated by the solar cell module. 19. A method according to claim 11, wherein the solar cell module has a peripheral conductive material and the electric wiring includes an earthing wire for earthing the peripheral conductive material. 20. A method according to claim 11, wherein the solar cell module has a peripheral conductive material, a conductive roof accommodating member is formed at an end portion of the roof base member, and the drawing step comprises the steps of electrically connecting the peripheral conductive material and the conductive roof accommodating member by the electric wiring and electrically grounding the conductive roof accommodating member by means of an earthing wire. 21. A power generation system, comprising: a solar cell-bearing roof including a solar cell module which is provided on a front face of a roof base member provided on a partition wall of a building, said partition wall partitioning the building into an indoor portion and an outdoor portion and said partition wall having an inner face on a side of said indoor portion and an outer face on a side of said outdoor portion; electric wiring with a first end portion being electrically connected to said solar cell module between said roof base member and said solar cell module; and an inverter electrically connected to said electric wiring, wherein said electric wiring connected to said solar cell module extends through said roof base member such that a second end portion of said electric wiring reaches a desired position on a back face of said roof base member which has no solar cell module thereon, said position being situated in an area of said back face on the outdoor portion side and which is outside said inner face of said partition wall, and said electric wiring is electrically connected to said inverter through said second end portion of said electric wiring. 22. A power generation system according to claim 21, wherein said roof base member has a throughhole at a portion thereof on said out