Mars Comfort-Aire Century VCD-SA Series Service Manual page 29

Service Manual - VCDxxSA
The first group controls the electric
SW2-1 heating to turn on the temperature
difference
Whether the electric heating is
SW2-2
delayed
Electric auxiliary heating delay start
SW2-3
time
Electric heating/compressor allow
SW2-4
opening limit
Continuous running time when the
SW3-1 set temperature of 1°C(1.8°F) is not
reached
Cooling and heating Y2 signal setting
SW3-2
temperature adjustment value A
Hysteresis of the second group of
SW3-3
electric heating
SW3-4 Reserve
S4-1 Default ON
S4-2 Default ON
NOTICE: The SW4 DIP switch is only for Certified service technicians to debug and use, please do not touch it.
SW4-1
SW4-2
SW4-3
1°C(1.8°F)
Yes
30min
Compressor allowed to
operate to low limit set by
ENC 2
E-square value(0.5 hour)
1°C(1.8°F)
2°C(3.6°F)
/
Short circuit W1 and W2
DH is off by default
000 is the default
000/001/010/011/100/101/110/111, internal machines
with different abilities, electric heating and PSC
classification for use
2°C(3.6°F)
No
15min
Electric heating allowed to
operate to high limit set by
ENC
1.5 hours
2°C(3.6°F)
3°C(5.4°F)
/
W1, W2 separate
DH on