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7
1.3.3 Outdoor fan control in heating mode
The outdoor fan starts before 5
s
econds
of starting of compressor and then it will run in high speed for 40
seconds.
The fan
should
run at every speed for at least 80
seconds.
When the compressor stops, the outdoor fan stops after 1
min
ute
.
1.3.4 Defrosting function
When the defrost condition is met, and the reversing valve de-energized, the EEV valves open, the outdoor fan stops,
until
the defrost parameters are met. (Defrost Logic is based on time and temperature.)
Note : the indoor fan motor will be stopped also during the defrost cycle
1.3.5 Oil-returned control in heating mode
1.3.5.1 Oil-returned condition
The
entire
unit is operating in low frequency
.
1.3.5.2 Oil-returned process in heating mode
The indoor unit displays “H1”
1.3.5.3 Oil-returned finished condition in heating mode
The duration reaches 5
min
utes.
1.4 Fan Mode
Fan mode is to circulate the indoor air. The outdoor unit will have no operation. T
emperature setting range is
80.6°F - 86°F
(
16
°C -
3
0
ć
)
.
2. Protection Function
2.1 Mode Conflict Protection of
I
ndoor
U
nit
When the setting mode is different
from another
indoor unit, the unit runs in below status:
a. The mode of the first operating indoor unit is the basic mode, then compare the mode of the other indoor units to see if there
is a conflict. Cooling mode (dry mode) is in conflict with heating mode.
b. Fan mode is in conflict with heating mode and the heating mode is the basic mode. No matter which indoor unit operates first,
the unit will run in heating mode.
2.2 Overload
P
rotection
F
unction
When the tube temperature is a little low, the compressor raises the operation frequency; when the tube temperature is a little
high, the compressor frequency is restricted or
decreases
the operation frequency; when the tube temperature is too high, the
compressor protection stops running.
If the discharge temperature protection continuously appears for 6 times, the compressor can’t resume running. The
compressor can resume running after cutting off the power and then putting through the power. (
If
the running time of
the compressor is longer than 7
min
utes
, the protection times record will be cleared
.
)
2.3 Discharge Protection Function
When the discharge temperature is a little low, the compressor raises the operation frequency; when the discharge
temperature is a little high, the compressor frequency is restricted or
decreases
the operation frequency; when the discharge
temperature is too high, the compressor protection stops running.
If the discharge temperature protection continuously appears for 6 times, the compressor can’t resume running. The
compressor can resume running after cutting off the power and then putting through the power
again
. (
If
the running time
of the compressor is longer than 7
min
utes
, the protection times record will be cleared
.
)
