Sharp AF-08CRL Service Manual - Page 22
Microcomputer Control System
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AF-08CRL MICROCOMPUTER CONTROL SYSTEM 1. Temperature control characteristic 1-1 COOL operation In the "COOL" mode, the thermostat circuit is controlled by two thermostat lines (C1, C2). 86 C1 84 C2 Room temperature (°F) 64 62 64 86 Preset temperature (°F) ("THERMO" switch) Figure Y-1 2. Operation mode 2-1 COOL operation The compressor turns on or off, at thermostat lines C1 and C2. The fan motor is also controlled with the compressor. States 1 & 3 : Compressor ON States 2 : Compressor OFF 3 C1 1 C2 Room temperature (°C) 2 Room temperature transition 3. Fan speed Fan speeds are given by the fan motor, "H", "M" and "L", which are available in the following operation mode. Table Y-1 Selector HIGH COOL MED COOL LOW COOL HIGH FAN MED FAN LOW FAN Fan motor H M L H M L 4. 12-hours timer 4-1 OFF-TIMER operation Set the delay timer during operation. The unit will turn off automatically according to your setting. Timer duration can be set by 0.5 hours to maximum 12 hours. Up to 9.5 hours, you can set by 0.5 hours increments and from 10 to 12 hours, by 1 hour increment. If you touch button "POWER ON/OFF" during OFFTIMER operation, then the unit turns off and OFFTIMER operation is cancelled. 4-2 ON-TIMER operation Set the delay timer when unit is not operating. The unit will turn on automatically according to your setting. Timer duration can be set by 0.5 hours to maximum 12 hours. Up to 9.5 hours, you can set by 0.5 hours increments and from 10 to 12 hours, by 1 hour increment. If you touch button "POWER ON/OFF" during ONTIMER operation, then the unit turns on and ON-TIMER operation is cancelled. ON-TIME and OFF-TIME display will count down the remaining time. from 0.5 to 9.5 ..... 0.5 hours from 10 to 12 ....... 1 hour 5. Energy saver During normal operation, the thermostat automatically controls cooling and the fan runs continuously whenever the air conditioner is in operation. When the ENERGY SAVER is set, the thermostat automatically controls cooling and the fan automatically stop when compressor is not operating. (Fan will stop in 30 seconds after the compressor stops.) Preset temperature (°C) Figure Y-2 2-2 FAN ONLY operation The fan motor always turns on. ON Compressor ON Fan OFF OFF 30 seconds Figure Y-3 22