Airwell YUDE024, Руководство по обслуживанию

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TROUBLESHOOTING
12-2 SM YUDE 2-A.1 GB
12.1.3 Judgment by Indoor/Outdoor Unit Diagnostics
Diagnostic from IDU Display:
If the malfunction still exists 4min later after stop of unit due to compressor protection, error code will be
directly displayed though indoor display. In other situations, error code can be displayed by pressing
LIGHT button 6 times within 4s.
The fault code could be shown in following way:
The Fault codes can be displayed by 2*7 segments (on IDU Display board)
Blinking of IDU LEDs (RUN,COOL,HEAT) can also show the information of fault code.
All fault code could be shown on RCWE
The ODU can only show ODU fault by 2x7 segments on outdoor Main Board.
12.1.3.1 Indoor Unit Diagnostics
12.1.3.2 Indoor Unit Diagnostics and Corrective Actions
12.1.3.3 Outdoor Unit Diagnostics
Indoor indicators
Failure Possible Reasons/Corrective actions
IDU
2*7segments /
RCWE
ODU 2x7
segments
E0 - Water pump failure
1. Connection of pump is loosen
2. Pump is damaged
E1 E1 High-pressure switch protection
1. Refrigerant was superabundant
2. Poor heat exchange (including blockage and
bad radiating environment )
3. Too high ambient temperature
E2 - Defrost protection
1. Poor air-return in indoor unit
2. Fan speed is abnormal
3. Evaporator is dirty.
4. The ambient temperature is too low
E3 E3 Low pressure switch protection
1. Refrigerant leakage
2. Poor heat exchange (including blockage and
bad radiating environment )
3. EEV connection problem or damage
E4 E4 Compressor over heating protection
1. EEV connection problem or damage
2. Refrigerant leakage
3. Poor heat exchange
E6 E6 Communication malfunction
1. Wiring mistakes
2. IDU or ODU PCB problem
E8 Malfunction of indoor fan motor
1. Bad contact of motor feedback terminal and
connection
2. Fan motor is blocked.
3. Motor malfunction
4. Malfunction of main board rev detecting
circuit.
E9 - Water overflow protection
1. Pump is damaged
2. The drain pipe is block
EE EE
Malfunction of outdoor main control
memory chip
F0 - RAT failure
1. Senor was broken or damaged
2. PCB temperature detection circuit has
problem
F1 - ICT failure
F2 F2 OCT failure
F3 F3 OAT failure