Instruction manual

INSTALLATION INSTRUCTIONS R−410A Ductless Split System: DLF4(A/H), DLC4(A/H)

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TROUBLESHOOTING

The unit has onboard diagnostics. Error codes will appear on the LED display on the front panel of the indoor unit in place of the

temperature display. Error codes are also displayed on the outdoor unit microprocessor board with colored LED lights. The tables

following explain the error codes for the specific models.

UNITS 9K & 12K, 115 Volts

Malfunction

Display on

Indoor Unit

State of the Lamps of Outdoor Unit PCB

Reasons

Error Code Green−LED2 Red−LED3 Yellow_LED4

Stop for anti−freeze protection of

indoor −unit

E2 Flash−4 Times Flash−3 Times

Refrigerant leakage. indoor unit air flow

blocked. Filter dirty.

Stop for discharge temp protection E4 Flash−7 Times

Low refrigerant. Capillary blocked. Ambient

temp is abnormal.

Stop for low voltage protection E5 Flash−5 Times Low voltage, ambient temp is abnormal.

Stop for communication malfunction E6 No Flash

Communication line failure, Main PCB failure.

Outside interference, wiring error.

Stop for compressor overload

protection

H3 Flash−8 Times

Compressor overheat. Low refrigerant.

Capillary blocked.

Overload protection H4 Flash−6 Times

Ambient temp is abnormal. Heat exchanger

blocked.

Stop for IPM module protection H5 Flash−4 Times

IPM module over temperature, low voltage,

silica grease problem

DC motor (indoor unit) does not

operate

DC motor control terminal contact problem,

fan does not rotate smoothly due to incorrect

installation, motor or control panel is

damaged.

Indoor ambient temperature sensor

malfunction