Hitachi RAK-25PSEW - 6. Initial Setting Circuit (IC531)

When power is supplied, the microcomputer reads the data in IC531 (E PROM) and sets the preheating
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activation value and the rating and maximum speed of the compressor, etc. to their initial values.
Data of self-diagnosis mode is stored in IC531; data will not be erased even when power is turned off.
Fig. 6-1
6. Initial Setting Circuit (IC531)
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