Electric device and method of normality determination for...

Details Electric device and method of normality determination for... Electric device and method of normality determination for...

2011-08-02

2011-08-02

Crosland, Donnie L (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular system function

C340S507000, C340S512000, C340S514000

Reexamination Certificate

active

07990260

ABSTRACT:
A normality determination unit determines that a communication function for an outdoor unit of its own is normal when receiving a signal from one of indoor units, and writes a normality flag into an EEPROM. Further, the normality determination unit determines that it is not asserted that the communication function for the outdoor unit of its own is normal when not receiving a signal from any of the indoor units for a predetermined time period, and deletes the normality flag in the EEPROM.

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