CONTROL SYSTEM
11.4.3.2
Indoor Fan Control in Heat Mode
Indoor fan speed depends on the indoor coil temperature:
ICTST ICTVL ICTL ICTH ICTT
11.4.4 Auto
Cool/Heat
Mode
When in auto cool heat mode unit will automatically select between cool and heat mode
according to the difference between actual room temperature and user set point temperature
(ΔT).
Unit will switch from cool to heat when compressor is off for 3 minutes, and ΔT < -3.
Unit will switch from heat to cool when compressor is off for 5 minutes, and ΔT < -3.
11.4.5 Dry
Mode
As long as room temperature is higher then the set point, indoor fan will work in low speed
and compressor will work between 0 and
MaxNLOADIF1C
Hz.
When the room temperature is lower than the set point, compressor will be switched OFF and
indoor fan will cycle 3 minutes OFF, 1 minute ON.
11.4.6
Indoor Units Operation when Indoor Unit Mode is Different than
Outdoor Unit Mode
Open louvers according to user selection.
Indoor fan is forced to OFF.
11.4.7
Heating Element Control
Heating element can be lit on if LOAD > 0.8 * MaximumNLOAD AND Indoor Coil temperature
< 45
C.
The heating element will be off when LOAD < 0.5 * MaximumNLOAD OR if Indoor Coil
temperature > 50
C.
11.4.8 Ioniser
Control
WNG Family - Ioniser is on when unit is on AND indoor fan is on AND Ioniser power switch
(on Ioniser) is on.
11.4.9 Electro
Static
Filter
(ESF)
Control
WNG Family - ESF is on when ESF switch is on, Safety switch is pressed, unit is on, AND
indoor fan is on.
Revision
0
11-7