ƽ
during heating process, when Tset
ćİ
(Tin-amb-3)
ć İ
(Tset +2)
ć
,the compressor operates
in low frequency.
during heating process, when (Tin-amb-3)
ć˚
(Tset +2)
ć
, then compressor stops running. And
outdoor fan motor stops in 60s.
Notice: It will take 2 minutes to power-off in 4-way valve when the unit closes down in heating mode
or switch from heating mode to other modes.
NJ
In this mode, there is power supply for reversing valve. Range of temperature setting is 16-30
ć
.
6.1.2.4.2 Controlling principles of outdoor fan motor
If
Tout-amb
İ
19
ć
, the fan motor runs in high speed.
If
Tout-amb
ı
21
ć
, the fan motor runs in low speed.
If 19
ć˘
Tout-amb
˘
21
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
6.1.2.4.3 Defrosting process
When defrosting conditions is detected, if compressor run in high frequency, then frequency will
be demultiplied first. Later compressor stops running and indoor fan motor stops. Outdoor fan motor
stops in 50s later. 4-way valve will be power-off in 45s. The defrosting functions operates when
compressor restart in 55s and frequency reaches 90hz. When the defrosting is over, the frequency
will drop until it reaches 60hz. 50s later 4-way valve and outdoor fan motor will be power-on.Then
frequency of compressor will rise to the required. But indoor fan motor have to start 2 minutes later
at least.
If compressor closes down for malfunction in heating mode, indoor motor will only exhausting
remaining heat.
6.1.3 Universal protection function of cool, heating, dehumidifying and auto
mode
6.1.3.1 Overloading protection function
When over-high temperature of tube (Ttube) is detected, frequency of compressor will be
demultiplied or limited. When Ttube is beyond maximum, compressor stops until Ttube restrores to
normal value.
If there are 6 continuous times of over-high Ttube protection, compressor will stop and can not
restart by itself. It can only be restart by pressing “ON/OFF” button. In operation if operating time of
compressor is over 7 minutes, the number of times will be zero cleared.
6.1.3.2 Time-delay protection of compressor
Compressor will restart in 3 minutes after it closes down.
6.1.3.3 High exhausting gas temp. protection of compressor
When over-high temperature of gas exhausted (Tex) is detected, frequency of compressor will
be demultiplied or limited. When Tex is beyond maximum, compressor stops until Ttube restrores to
normal value.
If there are 6 continuous times of over-high Tex protection, compressor will stop and can not
restart by itself. It can only be restart by pressing “ON/OFF” button. In operation if operating time of
compressor is over 7 minutes, the number of times will be zero cleared.
6.1.3.4 Current protection function
(1) overcurrent protection
If current of whole unit is beyond max. limit, unit will close down as if indoor temperature reaches
the set temperature. Unit will restore automatically after compressor has been stop for 3 minutes.
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