12b-15
CONTROL SYSTEM
Revision 0
12B.4.10 Sound Indication
• The buzzer will beep twice when starts and a long sound when stops, one sound for
receiving a command.
12B.4.11 Emergency Function
• The first press on the emergency key on the indoor control board, the unit enters to cooling
mode (SPT: 22ºC; fan speed: Hi; Louver: Auto); the second time press on the emergency
key, the unit enters to heating mode (SPT: 26ºC; fan speed: MID; Louver: Auto; AHEAT can
operation). Press on the emergency key once again, the unit exits to STBY.
12B.4.12 Strong Function.
• Strong function will active once receiving a signal from R/C. IFAN run at supper high speed
for 15 minutes, then restore to the set fan speed. When Strong signal from R/C is off,
Strong function is canceled, IFAN operate at set speed.
Note: If COMP stops, strong function is canceled; IFAN will operate at set speed.
12B.4.13 On unit indicators and controls
• For WMN Standby led indicate Error message
Error indication Standby led Blinks at 1Hz (● on ○ off)
RT 1 ●○○○○○●○
ICT 2 ●○●○○○○○●○●○
OCT 3 ●○●○●○○○○○●○●○●○
IFAN feedback 4 ●○●○●○●○○○○○●○●○●○●○
• During protection and Deicing operation LED blinks up.
• For WNG and F/S (use two-color LED)
• If unit is on, Operation LED light up, Standby LED turn off, During protection and Deicing
operation LED blinks up, not to indicate an Error message.
• If unit is off, Standby LED light up, Operation LED turn off, indicate error message blinks up
(see 3.13.1.1)
12B.4.14 Clogged air filter
• Filter LED will turn on after 512 operating h/r.
• Standby led indicate Error message Filter LED will turn OFF after Timer is restarted by
pressing the RESET button.
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