Controller function of outdoor unit
6.1.1 Parameters of temperature
Exhausting gas temperature of outdoor unit(Tex)
Ambient temperature of outdoor unit(Tam)
6.1.2 Fundermental function of system
In wichever mode, once compressor start-up, it can only be close down 6 minutes later at
least(not including malfunction protection/mode switch which requires compressor to stop);Once
compressor closes down, it can only restart 3 minutes later at least(including mode switch, stop by
remote control etc.);compressor starts up after outdoor motor runs for 5 seconds
6.1.2.1 Cool mode
6.1.2.1.1
Working conditions and process of cooling
ƽ
when compressor in closing down state and (Tin-am-Tset)
ı
0.5
ć
,if unit start in cooling mode,
then cooling mode operates; outdoor fan motor and compressor start to run. The frequency of
compressor can be adjusted automatically according to need of cooling power by micro-computer.
ƽ
during cooling process, when 0
ć İ
(Tset-Tin-am)
İ
2
ć
,the compressor operates in low
frequency.
ƽ
during cooling process, when 0 need of cooling power and (Tset-Tin-am)
˚
2
ć
, then compressor
stops running. And outdoor fan motor stops in 60s.
NJ
In this mode, there is no power supply for reversing valve. Range of temperature setting is 16-30
ć
.
6.1.2.1.2 Frost-proof protection
In cool and dehumidifying mode, when frost-proof protection is detected, the compressor will run in
lower frequency or stops. And outdoor fan motor stops in 60s. When frost-proof protection ends,
Compressor resumes running.
6.1.2.1.3 Controlling principles of outdoor fan motor
If
Tout-am
ı
26
ć
, the fan motor runs in high speed.
If
Tout-am
İ
24
ć
, the fan motor runs in low speed.
If 24
ć˘
Tout-amb
˘
26
ć
, the fan motor runs in original speed.
After fan motor runs in compulsive high speed for 3 minutes in starting-up, then the speed will be
controlled by the set principles
6.1.2.2 Dehumidifying mode
ƽ
Working conditions and process of dehumidifying: the same with the ones in cooling mode
ƽ
status of 4-way valve: closed
ƽ
range of temperature setting: 16-30
ć
ƽ
protection function: the same with the ones in cooling mode.
6.1.2.3 Fan mode
ƽ
compressor, outdoor fan motor and 4-way valve are closed and stopped.
ƽ
range of temperature setting: 16-30
ć
6.1.2.4 Heating mode
6.1.2.4.1 Working conditions and process of heating
ƽ
when compressor in closing down state and (Tin-amb-3)
ćİ
(Tset-0.5)
ć
, if unit start in heating
mode, then heating mode operates. Outdoor fan motor ,compressor and 4-way valve start to run.
The frequency of compressor can be adjusted automatically according to need of heating power by
micro-computer.
-10-
