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CONTROL SYSTEM
Revision Y05-01Service Manual - EMD Series
3 Cooling Mode
3.1 Cooling Mode – General
3.1.1 Mode Definition
MODE: COOL, AUTO (AT COOLING)
TEMP: SELECTED DESIRED TEMPERATURE.
FAN: HIGH, MED, LOW, AUTO.
TIMER: ANY
I FEEL: ON OR OFF
3.1.2 Room Temperature, RT, is detected by
x RAT in normal operation, or
x RCT (R/C sensor) in I-FEEL mode.
3.1.3 Indoor Coil Temp is detected by ICT.
3.1.4 Outdoor Coil Temp is detected by OCT.
3.2 Control Functions
3.2.1 COMP Operation
ON
OFF
RT-SPT
0
1
COMP
3.2.2 OFAN Operation
x In normal operation OFAN operates together with the COMP.
3.2.3 IFAN Operation
x IFAN will operate in ANY speed regardless the ICT or COMP state.
x IFAN speed will be determined according to user selection or AUTO-FAN logic (sect. 2.2)
3.2.4 RV and HEATERS outputs
x RV and HEATERS are in OFF state in cool mode.
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