31
Technical Information
Service Manual
6.3 Introduction of Basic Mode Function
1. Temperature Parameter
Ȕ
Indo or setting temperature (Tpreset)
Ȕ
Indoor ambient temperature (Tamb.)
2. Basic Functions of System
A
fter the unit is energized, the interval of start-up time for compressor is no less than 3min under any conditions; when the compressor is
started, the unit is off without the temperature change in 6min.
2.1 Cool Mode
2.1.1 Working conditions and process of cooling
^V±V# \?=^ $ #XX
runs under preset fan speed.
^V²V# Z\?=^ #XX # # #
^ V# Z \?=^³V³V# \?=^ X# $ " #
setting range is 61°F-86°F (16°C -30°C ).
a) Under cooling mode, after 1h of setting sleep process, Tpreset increases 2o°F(1°C); 2h later, Tpreset increases 4o°F(2°C). After 2h, the
setting temperature never increases, but the upper limit of increased setting temperature is 86o°F(30°C)
b) Under heating mode, after 1h of setting sleep process, Tpreset decreases 2o°F(1°C); 2h later, Tpreset decreases 4o°F(2°C). After 2h,
the setting temperature never decreases, but the upper limit of decreased setting temperature is 61o°F(16°C)
c) There is no sleep function under fan and dry mode.
d) When set sleep function, shift mode will cancel sleep function.
^V $ # #! ´ ! $ # *
2.2 Heating mode
V²V# {\=^ # $Z!##
operates at cold air prevention condition;
V# {\=^³V³V# \J=^ X#$#
V±V# \J=^# ## !Z! ## #
stopped for 2 minutes. Indoor fan operates at blowing residual heat conditioner.
Under this mode, the temperature setting range is 16-30°C(61-86°F).
3.3 Auto Fan
a) Auto fan speed under Cooling mode;
V±V# =\?^>$´
V# ³V³V# =\?^´
V²V# ´
b) There is 3.5min delay for auto fan shift.
3.4 TIMER Function
'@
a) TIMER ON: It can set timer on when the system is off, the setting time range is 0.5h-24h, when the time of setting timer on reaches, and
the system runs with the previous setting mode.
b) TIMER OFF: It can set timer on when the system is on, the setting time range is 0.5h-24h, when the time of setting timer off reaches,
the system stop to work.
'K
a) TIMER ON: If set timer on when the system is running, it continues to run; if set timer on when the system is off, when the time of setting
timer on reaches, and the system runs with the previous setting mode.
b) TIMER OFF: If set timer off when the system is off, the system keeps the stand-by status when setting timer off; if set timer off when the
system is on, when the time of timer off reaches, the system stops to run.
3.5 Memory Function
The system memories the setting running status of previous power-off, and runs automatically with the setting running status before it
power-off when it is energized again. If the unit is on before power-off, the compressor will 3min delay protection when it is energized
again.
3.6 Indicator Lamp, dual-8 digital pipe
a) When the unit runs, under cooling mode, cooling indicator lamp lights, dual-8 displays preset temperature.
b) When the unit runs, under fan mode, fan indicator lamp lights, dual-8 does not display.
c) When the unit runs, under dry mode, dry indicator lamp lights, dual-8 does not display.
d) When the unit runs, under heating mode, heating indicator lamp lights, dual-8 displays preset temperature.
T1 ˚C
Tpreset –1 ˚C
Compressor
Outdoor fan
Indoor fan
Run
Tamb.
Stop
Stop cooling
Start cooling
Original operating status
≥ 6 min.
≥ 3 min.
≥ 6 min.
Setting fan speed
