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Approx.
420 s.
5V
[Typical communication waveform]
Approx. 400 ms.
Enlarged reception waveform
Fig. 5-2
An infrared signal from the remote control unit is converted to an electrical signal by the remote
control light-receiving unit (IC821) and is received by the microcomputer. Data is transmitted as
digital data 0 and 1 by changing the interval of the basic pulses at about 420 s.
Remote control reception input
(pin of microcomputer)
Beep (reception tone)
INPUT
+
GND
66
• When the buzzer sounds, an approx.
3.9kHz square signal is output from
buzzer output pin 83 of the micro
computer. After the amplitude of this
signal has been set to 12Vp-p by a
transistor
, it is applied to the buzze
r.
The piezoelectric element in the buzzer
oscillates to generate the buzzer's sound.
R640
C632
The indoor fan motor and drive circuit are connected to the primary power supply. They therefore have voltage to ground.
Guard against electric shocks.
While the product is energized, do not under a
ny circumstances detach or reattach a connector. Any such practice would
cause a high voltage to r
un, resulting in the indoor
fan motor and board circuit being destroyed. (Check the discharge of
the C003 before detaching or reattaching the connectors.)
Caution
Caution
5
76
66
Содержание RAC-18WPB
Страница 50: ...WIRING DIAGRAM RA RAC 18 25 35WPB K 18 25 35 50PPB RAC 5 WPB 0 50 ...
Страница 52: ...CIRCUIT DIAGRAM MODEL RAK 18 25 35 50PPB 52 WIRED REMOTE CONTROL SEND POWER FOR CLEANNESS ...
Страница 53: ...MODEL RA C 18 25 35 WPB 53 ...
Страница 54: ...MODEL RAC 50WPB 54 ...
Страница 67: ...MODEL RAK 18 25PPB RAC 18 25WPB INDOOR UNIT INDOOR UNIT 67 ...
Страница 68: ...COOLING CYCLE INDOOR UNIT OUTDOOR UNIT HEATING CYCLE INDOOR UNIT OUTDOOR UNIT MODEL RAK 35PPB RAC 35WPB 68 ...
Страница 78: ...10 10 10 10 10 R901 R904 R641 R907 R908 R694 R902 R695 R741 R740 R642 DSW1 DSW1 R903 R905 R906 78 ...
Страница 81: ...L N 300 330 Main parts L N C021 C022 37 5 420V RAC 18 25 35WPB 81 1 5 ...
Страница 85: ...5 5 1 10 11 12 74 74 70 70 74 75 5 1 HIC P W B 74 70 75 85 ...
Страница 86: ...6 Electric expansion valve circuit 48 47 46 45 13 14 15 16 4 3 2 1 68 67 66 65 RED 14 12 10 7 6 1 8 6 1 6 2 86 ...
Страница 87: ...2A Fuse DC300 330V 7 7 1 87 ...
Страница 88: ...2A DC300 330V 88 ...
Страница 89: ...L N 300 330 L N 50WPB 89 ...
Страница 90: ...300 330 C021 C023 500 450V 16V R249 33 ACT IP CUT 30 90 ...
Страница 94: ...5 5 1 74 74 70 70 74 75 5 1 HIC P W B 40 41 42 74 70 75 94 ...
Страница 96: ...2A Fuse DC300 330V 7 1 7 96 ...
Страница 97: ...2A DC300 330V 97 ...
Страница 108: ...108 109 ...
Страница 110: ...SELF DIAGNOSIS LIGHTING MODE MODEL RAC 18 25 35WP B 110 ...
Страница 111: ...SELF DIAGNOSIS LIGHTING MODE MODEL RAC 50WP B 111 ...
Страница 131: ...57 131 ...
Страница 132: ...Please set the DIP switch No 6 to ON accordingly Refe to page r 78 132 ...
Страница 133: ...78 133 ...
Страница 134: ...134 ...
Страница 148: ...HITACHI RAK 18PPB RAC 18WPB RAK 25PPB RAC 25WPB HHAW NO 0080E RAK 35PPB RAC 35WPB RAK 50PPB RAC 50WPB 3 148 ...