70
Installation and Maintenance
Service Manual
No.
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Name
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Unit
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Code
Display
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0.5s
Operation
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
11
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refrigerant
Fo
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Nominal cooling mode
12
Indoor
ambient
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sensor is
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F1
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operation.
1. Loosening or bad contact of
indoor ambient temp. sensor and
mainboard terminal.
2. Components in mainboard fell
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3. Indoor ambient temp. sensor
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4. Mainboard damaged.
13
Indoor
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sensor is
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F2
AC stops operation once
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internal fan motor stops
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stop operation
1. Loosening or bad contact of
Indoor
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mainboard terminal.
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fall
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4. Mainboard damaged.
14
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ambient
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sensor is
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F3
OFF 3S
and
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6 times
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operation
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WHPSHUDWXUHVHQVRU
15
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condenser
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sensor is
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and
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5 times
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operation.
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WHPSHUDWXUHVHQVRU
16
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sensor is
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F5
OFF 3S
and
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7 times
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PLQV
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WHPSHUDWXUHVHQVRU
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WXEH
17
Limit/
decrease
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and
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3 times
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compressor is decreased
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resistant)
18
Decrease
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and
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once
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compressor is decreased
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