Table of Contents
SiUS121502E
4.3
Outdoor Unit
i
Outdoor Unit LED Indication
Green
Red
A
1
2
3
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Note:
1. The error codes in the parenthesis ( ) are displayed only when the system is shut down.
2. When a sensor error occurs, check the remote controller display to determine which sensor is
3. The indoor unit error code may take the precedence in the remote controller display.
4. Turn the power off and then on again. If the same LED indication appears again, outdoor unit
Service Diagnosis
h
j
: ON,
: OFF,
: Blinks
Error
Codes
4
5
h
h 00
UA
UH
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h
(U0)
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h U2
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h U3
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h A5
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h E1
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(E5)
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(E6)
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h E7
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h E8
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h EA
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h F3
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h F6
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h H0
H6
H8
H9
J3
J6
J8
J9
P4
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h L3
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h L4
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h L5
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malfunctioning.
If the remote controller does not indicate the error code, conduct the following procedure.
∗ Turn the power off and then on again. If the same LED indication appears again immediately
after the power is turned on, the fault is in the thermistor.
∗ If the above condition does not result, the fault is in the CT.
PCB is faulty. Replace the outdoor unit PCB.
Description
Normal condition
Unspecified voltage (between indoor unit and outdoor unit)
Anti-icing control in other rooms
Refrigerant shortage
Low-voltage detection or over-voltage detection
Wiring Error Check Unexecuted
Anti-icing control for indoor unit
Outdoor unit PCB abnormality
OL activation (compressor overload)
Compressor lock
DC fan lock
Input overcurrent detection
Four way valve abnormality
Discharge pipe temperature control
High pressure control in cooling
Compressor sensor system abnormality
Position sensor abnormality
CT or related abnormality
Outdoor temperature thermistor or related abnormality
Discharge pipe thermistor or related abnormality
Outdoor heat exchanger thermistor or related abnormality
Liquid pipe thermistor or related abnormality
Gas pipe thermistor or related abnormality
Radiation fin thermistor or related abnormality
Electrical box temperature rise
Radiation fin temperature rise
Output overcurrent detection
See the note 4.
Check the power supply.
Code Indication on Remote Controller
Reference
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Troubleshooting
