Algorithm & Control
21
2.10 Powerful function
•
Press
(for FTK(X)B-AX models) or “
TURBO
” for (FTK(X)N-AX models) for powerful mode.
• When POWERFUL/TURBO button is pressed, the fan speed will run at maximum speed for 20 minutes.
• Press again to deactivate the function.
• Available in HEAT and COOL modes only.
Operation Mode
Fan Speed
Target Temperature
COOL
Current Tap + A rpm
Current set temperature -4
°
C (7.2
°
F)
HEAT
Current Tap + B rpm
Current set temperature -6
°
C (10.8
°
F)
Class 09/12: A = 100 rpm
B = 100 rpm
Class 18:
A = 90 rpm
B = 50 rpm
Class 24:
A = 80 rpm
B = 50 rpm
2.11 Indoor-Outdoor Communication
Master by outdoor unit.
Outdoor controller board will transmit signal to Indoor controller board. Indoor unit will response to outdoor
once the valid data is received.
Indoor
Outdoor
Send Signal
Send Signal
If data communication line between Indoor and Outdoor is disrupted
for a period of time (min 15s, max 300s), the compressor will stop
& Outdoor fan stop with fan OFF timer. Indoor LED blinks to indicate error.
If communication resumes, error is cleared, Indoor LED stop blinking,
and the system will be restarted
Communication between indoor and outdoor equipment, terminal 1 to ground 120 VAC, 2 to ground
120 VAC, SIG to ground 120 VAC, between 1 & 2 208/230 VAC, between 2 & 3 0 VAC but 5 to 45 VDC
fluctuating signal.
