12b-3
CONTROL SYSTEM
Revision 0
12B.3 Operation Modes
12B.3.1 Auto Mode Operation
• If RT >= 26ºC - A/C will go into Cooling Mode; Initial SPT is 25ºC.
• If 22ºC < RT < 26ºC- A/C go into Drying mode; Initial SPT is 24ºC.
• If RT <= 22ºC - A/C will go into Heating Mode; Initial SPT is 23ºC.
• For Cooling only, If RT <= 22ºC - A/C will go into Fan Mode; Initial SPT is 23ºC.
• IFAN speed range: Auto, Low, Mid and Hi. Initial speed: Auto.
• SPT can be set by R/C command (heating, cooling, dry or fan mode).
• The Mode can not be changed.
• If RT is invalid, it will go into Drying mode state (2).
12B.3.2 Cooling Mode
• SPT range: 16ºC-30ºC. Initial: 24ºC;
• IFAN speed range: Auto, Low, Mid and High. Initial speed: Hi;
• Auto Fan
Note:
1. When fan speed changes from Low speed to High speed, there is 3 minutes delay to
avoid the fan speed changing frequently. But not vice versa.
2. If RT is invalid and the fan speed is set to Auto, IFAN will operate at medium speed.
Heating / Fan Drying Cooling
22ºC 26ºC RT
IFAN H
M
L
SPT+1ºC SPT+2ºC SPT+3ºC SPT+4ºC RT
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