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SK2014-SON-002-TechMnl-SWC-003
5.
Mode configuration:
DIPA-S1
Model
SW7
SW8
Model setting
0
0
Cool-Heat
0
1
Cool-Heat + booster heater
1
0
Cooling only
1
1
Cool + primary heater
6.
Unit ON/OFF
There are 3 ways to turn the system on or off:
a) By the ON/OFF button on the handset or wired wall pad.
b) By the programmable timer on the handset or wired wall pad.
c) By the manual control button on the air conditioner.
7.
Auto-Restart
The system uses a non-volatile memory to save the present operation parameters when system is turned off or in
case of system failure or cessation of power supply.
The restored parameter data-set depends on the type of user interface.
a) Handset only user interface:
When the power on signal is received by the air conditioner and no wired wall-pad is installed, the Mode,
Fan Speed, Set temperature and Louver/Swing setting will be the same as the handset setting before the
last power off.
b) Wall-pad only OR wall-pad and handset user interface:
When the power on signal is received by the air conditioner and a wired wall-pad is installed, the Mode,
Fan Speed, Set temperature, Louver/Swing setting and Timer ON/OFF weekly program will be the same as
the wall pad setting before the last power off.
C.1.5.
Control Logics for 2-Pipe System
C.1.5.1.
With Thermoelectric Valve Configuration
COOL MODE
a)
MTV2, AUX1 and electric heater are always off.
b)
If Tr ≥ Ts + 1ºC (or + 4ºC if economy contact is activated), then cool operation is activated and MTV1 and
AUX2 are turned on. Indoor fan runs at set speed.
c)
If Tr < Ts, then cool operation is terminated and MTV1 and AUX2 are turned off. Indoor fan runs at set
speed.
d)
The range of Ts is 16 - 30ºC
e)
Indoor fan speed can be adjusted to low, medium, high and auto.
f)
When turned on, MTV1 requires 30 seconds before it is fully open.
g)
When turned off, MTV1 requires 120 seconds before it is fully closed.
h)
When the unit is turned off, the indoor fan will shut down after 5 seconds.
LOW TEMPERATURE PROTECTION OF INDOOR COIL
a)
If Ti1 ≤ 2 ºC for 2 minutes, then MTV1 and AUX2 are turned off. If indoor fan is set for low speed, then it
will run at medium speed. If it is set at medium or high speed, then it will keep running at the same
speed.
b)
If Ti1 ≥ 5ºC for 2 minutes, then MTV1 and AUX2 are turned on. Indoor fan runs at set speed.
FAN MODE
a)
Indoor fan runs at the set speed while heater, MTV1, MTV2, AUX1 and AUX2 are turned off.
b) Indoor fan speed can be adjusted to low, medium and high.
HEAT MODE
Without Electrical Heater
