Gree GWH18YE-S6DBA2A/I, Руководство по обслуживанию

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Service Manual
♦ W hen com pressor is running (not including each malfunction and protection):
a.When outdoor ambient tem perature>20°C(68°F) and indoor fan speed is low or medium, the fan speed will turn to high; if indoor fan speed
is high or super high, it will keep the same.
b.When outdoor ambient tem perature<18°C(64.4°F) , the fan speed will resume set fan speed.
c. When 18°C<outdoor ambient tem perature<20°C(68F), it will run at present fan speed (set fan speed or high fan speed); but when first
exiting cold air prevention after entering heating mode, it will run in set fan speed.
T p re s e t+ 5 °C
T p re s e t+ 2 ^ C
S to p hea ting
O rig in a l o pe ra tin g
-/ Tamb.
--------> 6 m in . ----- - ^ > 3 m i n . - - - —
> 6 m in .— -
S ta rt heating
C o m p re s s o r
30s
30s
O u td o o r fan
/
In d o o r fa n < 2 m
-
60s
,
preset < 2 m i r ^ / / ^ / / ^
-
60:
R e ve rsin g va lve
' “// / / z
/ / / / / / / / / / Z z
Z jfy V //
S to p
© Condition and process of defrost
W hen duration of successive heating operation is more than 45 minutes, or accumulated heating time more than 90 minutes, and one of the
following conditions is reached, the unit will enter the defrost mode after 3 minutes.
(1). T outdoor ambient > 5°C(41°F), T outdoor tube<-2°C(28.4°F);
(2) -2°C<T outdoor ambient < 5°C(41°F),, T outdoor tube<-6°C(21.2°F);
(3) -5°C<T outdoor ambient < -2°C(28.4°F), T outdoor tube<-8°C(17.6°F);
(4)-10°C<T outdoor ambient < -5°C(23°F);, T outdoor tube-T com pensatory < (T outdoor ambient-3°C(5.4°F))
(5)T outdoor ambient < -10°C(14°F), T outdoor tube-T com pensatory < (T outdoor ambient-3°C(5.4°F))
(after energizing, T com pensatory=0°C(32°F) during the first defrosting; if it is not the first defrosting, T compensatory is confirmed by T out­
door tube of quitting last defrosting: a. when T outdoor tube > 2°C(35.6°F), T compensatory=0°C(32°F); b. when T outdoor tube < 2°C(35.6°F),
Tcompensatory=3°C(37.4°F))
A t that time, the indoor fan stops and the com pressor stops, and after 30 seconds the outer fan will stop, and then after 30 seconds,the four­
w ay valve will stop. A fter 30 seconds, the com pressor is initiated for raising the frequency to defrost frequency.When the com pressor has
operated under defrost mode for 7.5 minutes, or T outdoor ambient > 10°C, the com pressor will be converted to 46Hz operation. A fter 30
seconds, the com pressor will stop. And after another 30 seconds, the four-way valve will be opened, and after 60 seconds, the compressor
and the outer fan will be started, the indoor fan will run under preset cold air prevention conditions, and H1 will be displayed at temperature
display area on the display panel. Defrost frequency is 85Hz.
© Protection
♦ Cold air prevention
The unit is started under heating mode (the com pressor is ON):
® In the case of T indoor amb. <24°C(75.2°F): if T tube<40°C(104°F) and the indoor fan is at stop state, the indoor fan will begin to run at
low speed with a time lag of 2 minutes. W ithin 2 minutes, if T tube>40°C(104°F) , the indoor fan also will run at low speed; and after 1-min­
ute operation at low speed, the indoor fan will be converted to operation at preset speed. Within 1-minute low speed operation or 2-minute
nonoperation,if T tube>42°C(107.6°F) , the fan will run at present speed.
© In the case of T indoor amb. >24°C(75.2°F): if T tube<42°C(107.6°F), the indoor fan will run at low speed, and after one minute, the indoor
fan will be converted to preset speed. W ithin one-m inute low speed operation, if T tube>42°C(107.6°F), the indoor fan will be converted to
preset speed.
Note: T indoor amb. indicated in ® and © refers to, under initially heating mode, the indoor ambient tem perature before the command to start
the com pressor is performed according to the program, or after the unit is withdrawn from defrost, the indoor ambient tem perature before the
defrost symbol is cleared.
(5) Fan Mode
Under the mode, the indoor fan will run at preset speed and the compressor, the outdoor fan, the four-way valve and the electric heater will
stop.
Under the mode, tem perature can be set within a range of 16~30°C(60.8~86°F).
(6)AUTO Mode
® Operation w ay of AUTO mode
a.When Tambient>26°C(78.8°F), it will run in cooling mode. The implied set tem perature is 25°C(77°F) (note: the set tem perature sending to
outdoor unit is 25°C(77°F)).
b.For heating and cooling unit, when Tambient<22°C(71.6°F), it will run in heating mode. The implied set tem perature is 20°C(68°F);
for cooling only unit, when Tambient<22(71.6°F)°C, it will run in fan mode and the displayed set tem perature is 25°C(77°F).
Installation and Maintenance
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