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9.2
Malfunction display section
Linge Wind D.C. Variable Frequency Series
When malfunction or protection occurs in the air conditioner, corresponding code will be displayed on the screen
of the indoor unit and the indicator of outdoor unit will blink accordingly as well. When protection or malfunction
is eliminated, display will be back to normal
Display code and
malfunction
description of
indoor unit
Indicator display
of outdoor unit
E4: Compressor discharge protection
E5: Low voltage overcurrent protection
E6: Communication malfunction
F1: Indoor environmental sensor open or short circuit (the malfunction is detected for 30s
continuously)
F2: Indoor evaporator sensor open or short circuit (the malfunction is detected for 30s continuously)
F3: Outdoor environmental sensor open or short circuit (the malfunction is detected for 30s
continuously)
F4: Outdoor condenser sensor open or short circuit (the malfunction is detected for 30s
continuously)
F5: Outdoor discharge sensor open or short circuit (after the compressor runs for 3 min, the
malfunction is detected for 3s continuously)
H1: Defrosting
H3: Compressor overload protection
H4: System malfunction (i.e. overload protection)
H5: IPM module protection
(Mainboard) Yellow light blinks 1 time
(Mainboard) Yellow light blinks 2 times
(Mainboard) Yellow light blinks 3 times
(Mainboard) Yellow light blinks 4 times
(Mainboard) Yellow light blinks 5 times
(Mainboard) Yellow light blinks 6 times
(Mainboard) Yellow light blinks 7 times
(Mainboard) Yellow light blinks 8 times
(Mainboard) Red light blinks 1 time
(Mainboard) Red light blinks 2 times
Compressor is running (this is normal condition
and the display of indoor unit is normal)
Defrosting (display H1)
Antifreezing protection (display of indoor unit
displays is normal)
IPM module protection (corresponds to H5 of
indoor unit)
Overcurrent protection (corresponds to E5 of
indoor unit)
Overload protection (corresponds to H4 of
indoor unit)
Discharge protection (corresponds to E4 of
indoor unit)
Compressor overload protection (corresponds to
H3 of indoor unit)
Limited frequency(current)
Dropped frequency (Discharge)
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