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13. Infrared human presence sensor circuit
With the infrared sensor,the air conditioner can detect the activity level in a room and adjust the
temperature and humidity automatically,thus achieving the purpose of energy saving.
When the activity level in a room is detected,the infrared sensor will be in operation.
And a low-voltage output from the infrared sensor P.W.B. will be magnified by the amplifier comparator
and be transformed the digital signal to microcomputer(IC601).
(The infrared sensor output is [Hi] when the activity level is not detected. On the contrary,output is [Lo].)
If the connector(CN21) is not inserted, it will be considered as no infrared sensor, and no self-diagnosis
indication.
Fig.13 1
Sensor P.W.B
Indoor main P.W,B
Microcomputer
Infrared sensor
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Summary of Contents for RAC-18WPD
Page 2: ... DANGER 2 ...
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Page 28: ...Contact your sales agent immediately if the following phenomena should occur Notes 28 ...
Page 31: ...WIRING DIAGRAM RAK 15QPD RAK 18RPD RAK 25RPD RAK 35RPD RAK 42RPD RAK 50RPD 31 ...
Page 33: ...CIRCUIT DIAGRAM MODEL RAK 15QPD 33 ...
Page 34: ...CIRCUIT DIAGRAM MODEL RAK 18 25 35 42 50RPD 34 ...
Page 57: ...10 10 10 10 10 DSW1 57 ...
Page 61: ...RL1 RL1 RL2 61 ...
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Page 73: ...37 and page 38 73 ...
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Page 77: ... 䇭䇭 䇭䇭 䇭䇭 䇭䇭 䇭䇭 䇭䇭 B C E F 㺢 F 䌖 B GH E H C J E 77 ...
Page 78: ... 䇭䇭 G FK 㺢 F L M C B C M C E C B H C E B M C E C B M C 78 ...
Page 93: ...RAK 15QPD RAK 18RP RAK 25RP D D RAK 35RP RAK 42RP D D RAK RPD 50 JCH WH NO 0108E 93 ...