Main Logic; Cooling; Dry Mode - Gree GUHN09NK3AO Service Manual

2 MAIN LOGIC

2.1 Cooling

When T +1
amb. preset t
running; and the indoor fan is running at a set speed.
When T -1
amb. preset
stop running; and the indoor fan is running at a set speed.
o
When T -1 C < T
preset amb.

2.2 Dry Mode

When T +2
amb. preset
running; and the indoor fan is running at a low speed.
o
When T -2
amb. preset
stop running.
o
When T -2 C < T
prese amb.
is, the compressor runs for 6 minutes and then stops for 4 minutes, in such cycle repeatedly; and the indoor fan
operates at a low speed.
Starting up
OFF
Compressor
OFF
Outdoor fan
OFF
Indoor fan
OFF
4-way valve
o
C, the unit begins cooling operation and the compressor and the outdoor fan are
o
C, the unit is in the cooling shutdown state, and the compressor and the outdoor fan
o
< T +1 C, the unit keeps in the operation state.
preset
Starting up
OFF
Compressor
OFF
Outdoor fan
OFF
Indoor fan
OFF
4-way valve
o
C, the unit begins cooling operation and the compressor and the outdoor fan are
C, the unit is in the cooling shutdown state and the compressor and the outdoor fan
o
< T +2 C, the unit is in the six-minute stop and four-minute operation state, that
preset
Cooling mode
Manual shutdown
ON
OFF
ON
OFF
H grade Operation at
a set speed
OFF
Time
1S 15S
5S
Dry mode
Manual shutdown
ON
OFF
ON
OFF
H grade Operation at
a set speed
OFF
Time
1S
15S
5S
U-MATCH Air
Conditioners
Service Manual
31