| 摘要 |
A programmable thermostat for use with air conditioners or heat pumps. Two (2) programmable timer-counters determine the respective amounts of time that the compressor will and will not operate. Both timers are consumer controlled. The "on" timer initiates compressor operation at the beginning of its cycle, and activates the "off" timer at the end of its cycle. The "off" timer stops compressor operation at the beginning of its cycle and activates the "on" timer at the end of its cycle. Operation of the "off" timer can be overridden by a "satisfied/not satisfied" means which re-starts the "on" timer at the end of its cycle if certain monitored conditions have not attained a preselected threshhold value. Filtering means are also provided so that the "on" timer responds only to genuine calls for service from the thermostat.
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