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8. Initial Setting Circuit (IC401) – For RAK-18NH6AS only
● When power is supplied, the microcomputer reads the data in IC401 and IC402 (E
2
PROM) and sets the
preheating activation value and the rating and maximum speed of the compressor, etc. to their initial values.
Fig. 8-1
SW2 will act as a program selector for IDR .2kW and 1.8kW. When switch is turn to position 1.8kW, IC401
will be selected as 1.8kW mode. When switch is turn to position 1.2kW, IC402 will be selected as 1.2kW
mode.
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