Electra WNG 50 DCI Service Manual page 63

12.4.3.2 Indoor Fan Control in Heat Mode
Indoor fan speed depends on the indoor coil temperature:
12.4.4 Auto Cool/Heat Mode
When in auto cool heat mode unit will automatically select between cool and heat mode
according to the difference between the actual room temperature and the 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.
12.4.5 Dry Mode
As long as the 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 in intervals of 3 minutes OFF, 1 minute ON.
12.4.6 Heating Element Control
Heating element can be lit on if LOAD > 0.8 * MaximumNLOAD AND the Indoor Coil
temperature is lower then 45°C.
The heating element will be off when LOAD < 0.5 * MaximumNLOAD OR if the Indoor Coil
temperature higher then 50°C.
12.4.7 Ionizer Control
WNG Family - Ionizer is on when:
•
The Ionizer power switch (on the Ionizer) is on.
•
Unit AND indoor fan are on.
•
ESF Safety switch is on.
12.4.8
Electro Static Filter (ESF) Control
WNG Family - ESF is on when:
•
ESF switch is on,
•
ESF Safety switch is pressed,
•
Unit is on, AND indoor fan is on.
Service Manual - WNG 50_60_80 DCI
ICTST ICTVL ICTL
Revision Y05-02
CONTENT
CONTROL SYSTEM
ICTH ICTT
12-7