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7. Initial Setting Circuit (IC401)
●
When power is supplied, the microcomputer reads the data in IC401 (E
2
PROM) and sets the preheating
activation value and the rating and maximum speed of the compressor, etc. to their initial values.
●
Data of self-diagnosis mode is stored in IC401; data will not be erased even when power is turned off.
Fig. 7-1
Microcomputer
External ROM
SCL
SDA
0V
0V
0V
5V
5V
5V
C401
IC401 (E
2
PROM)
R404
R403
27
26
1
2
3
4
8
7
6
5
}
Содержание RAI-25NH5
Страница 31: ... 29 MODEL RAI 25NH5 RAI 35NH5 WIRING DIAGRAM INDOOR UNIT ...
Страница 33: ...CIRCUIT DIAGRAM MODEL RAI 25NH5 RAI 35NH5 33 ...
Страница 36: ... 39 47 RAI 25NH5 RAI 35NH5 ...
Страница 58: ... 68 CHECKING THE REMOTE CONTROLLER ...
Страница 59: ... 69 PARTS LIST AND DIAGRAM INDOOR UNIT MODEL RAI 25NH5 RAI 35NH5 17 18 13 2 4 8 14 3 1 5 12 6 7 15 ...
Страница 62: ...HITACHI PM NO 0271E Printed in Malaysia RAI 25NH5 RAI 35NH5 ...