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Table 8-3
Solution
Clean the heat exchanger.
Clean the air filter.
Eliminate all dirties and make air
smooth.
Close doors and windows.
Make curtains in order to shelter from
sunshine.
Reduce heat source.
AC cooling capacity reduces (normal).
Check leakage and rightly recharge
refrigerant.
Symptoms Causes
Unit does not start
Air flowing normally but
completely can't cooling
Units start or stop frequently
Low cooling effect
Low heating effect
Outdoor unit and indoor unit heat
exchanger is dirty.
The air filter is dirty.
Inlet/outlet of indoor/outdoor units is
blocked.
Doors and windows are open
Sunlight directly shine.
Too much heat resource.
Outdoor temp. is too high.
Leakage of refrigerant or lack of
refrigerant.
Use heating device.
Close doors and windows.
Check leakage and rightly recharge
refrigerant.
Outdoor temperature is lower than 7 C
Doors and windows not completely
closed.
Leakage of refrigerant or lack of
refrigerant.
Power failure.
Power switch is off.
Fuse of power switch may have burned.
Batteries of remote controller exhausted
or other problem of controller.
Temperature is not set correctly.
Be in 3 minutes protection of
compressor.
Refrigerant is too little or too much.
Air or no concretingc gas in the
refrigerating circuit.
Compressor is malfunction.
Voltage is too high or too low.
System circuit is blocked.
Wait for the comeback of power.
Switch on the power.
ReplLocation:
Replace the batterises or check the
controller.
Set the temperature properly.
Wait.
Check leakage, and rightly recharge
refrigerant.
Vacuum and recharge refrigerant.
Maintenance or change compressor.
Install manostat.
Find reasons and solution.
30
OWNER'S MANUAL
Table 8-2 Outdoor unit error codes (Models 18 to 60)
In low ambient cooling mode, the LED displaysLC or alternative displays between running frequency and "LC"
(each displays 0.5s)
1E1
Communication malfunction beetwen indoor and outdoor units
2F0 Current overload protection
3F1 Outdoor room temperature sensor (T4) open circuit or short circuit
4F2 Outdoor coil temperature sensor (T3) open circuit or short circuit
5F3 Outdoor discharge temperature sensor (T5) open circuit or short circuit
6F4 Outdoor EEPROM error
7F5 Outdoor fan speed malfunction
8P0 Inverter module IPM protection
9P1 High/Low voltage protection
10 P3 Outdoor low temperature protection
11 P4
Rotor position protection of compressor
12 P7
Sensor of outdoor IGBT is faulty
13 J0
High temperature position of indoor heat exchanger in heating mode
14 J1
High temperature position of indoor heat exchanger in cooling mode
15 J2 High discharge temperature protection
16 J3 PFC module protection
17 J4 Communication error between outdoor main chip and compressor driven chip IR341
18 J5 High pressure protection
19 J6 Low pressure protection
20 J8 AC voltage protection
DescriptionCode
30


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