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Technical Information
Service Manual
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When air conditioner has a malfunction,dual-8 nixie tube will show relevant error code.
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When air conditioner is in auto defrosting, heating icon will be on and off.
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If turn off light button, all display will be turned off.
(10) Memory function
①
Power failure when turning on the unit
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Memory content: ON status, mode, up&down swing, light, set temperature, set fan speed, general timer, Fahrenheit/ Celsius
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General timer can be memorized. Time of timer is calculated again from energization.
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Clock timer can’t be memorized.
②
Power failure when turning off the unit
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Memory content: OFF status, mode, up&down swing, light, set temperature, set fan speed, general timer, Fahrenheit/ Celsius
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General timer can be memorized. Time of timer is calculated again from energization.
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Clock timer can’t be memorized.
4. Special Function
(1) Health function (for the model with health function)
During operation of the IDU fan motor, press health button on the remote controller to start health function (If there is not health button on
the remote controller, the unit defaults health function ON).
(2) I Feel function (for all models, but it needs the remote controller which can set this function)
When I FEEL command is received, the controller will operate according to the ambient temperature sent by the remote controller (For
defrosting and cold air prevention, the unit operates according to the ambient temperature sensed by the air conditioner). The remote
controller will regularly send ambient temperature data to the controller. When the data has not been received for a long time, the unit
will operate according to the temperature sensed by the air conditioner. If I FEEL function is not set, the ambient temperature will be that
sensed by the air conditioner.
F1
Indoor ambient temperature sensor is open/short-circuited
F2
Indoor evaporator temperature sensor is open/short-circuited
H6
Blocked protection of IDU fan motor
C5
Malfunction protection of jumper cap
U8
Zero-crossing inspection circuit malfunction of the IDU fan motor
F3
Outdoor ambient temperature sensor is open/short-circuited
F4
Outdoor condenser temperature sensor is open/short-circuited
F5
Outdoor discharge temperature sensor is open/ short-circuited
E1
High pressure protection
E3
Low pressure protection of compressor
E4
High discharge temperature protection of compressor
E5
Overcurrent protection
E6
Communication malfunction
H3
Overload protection compressor
E8
Overload malfunction
F0
Lack of refrigerant or block protection for the system
Defrosting
Heating indicator off for 0.5s and then blinks for 10s
