Haier ESA412K User Manual download pdf (Page 167)

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9. Failure code and troubleshooting

9.1 Failure code

For the inverter unit with new wired controller YR-E12 (0010451521E)



Number of

flashes of

remote

control and

indoor lights

Wire

control

readout

Centralize

d control

readout

Fault description Possible cause Remedy Purpose Items to be checked

10 08 21 Fault in drain system Float switch is disconnected

25min or longer.

Restorable when given

corrective signal.

To prevent condensate

spilling out of drain pan

Water line, water pump,

float switch, I/O voltage

1 01 01 Fault in indoor

ambient temperature

sensor

Sensor is open-circuit or

short-circuit for 2min or

longer.

Restorable when given

corrective signal.

To test input signal of

system.

Hardware connection, I/O

voltage division

2 02 02 Fault in indoor coil

temperature sensor

Sensor is open-circuit or

short-circuit for 2min or

longer.

Restorable when given

corrective signal.

To test input signal of

system.

Hardware connection, I/O

voltage division

3 4A 11 Fault in outdoor

ambient temperature

sensor

Sensor is open-circuit or

short-circuit for 2min or

longer.

Restorable when given

corrective signal.

To test input signal of

system.

Hardware connection, I/O

voltage division

4 49 12

Fault in outdoor coil

temperature sensor

Sensor is open-circuit or

short-circuit for 2min or

longer.

Restorable when given

corrective signal.

To test input signal of

system.

Hardware connection, I/O

voltage division

5 48 10

Overcurrent Detected CT current is

above the limit three times

within 30min.

Restorable after repair. To prevent overload

(electric parameter).

Power supply, wiring,

compressor, pressure

6 53 14

Fault with high

pressure

High pressure switch is

activated three times within

30min.

Restorable after repair. To prevent overload

(pressure parameter).

Wiring, circuit, pressure

switch, refrigeration

system

Power failure Wrong phase, phase failure

or phase loss.

Restorable after repair. To ensure power supply. Wiring, control board,

power supply

8 07 06 Communication error

between wire control

and indoor unit

Communication error lasts

4min or longer.

Restorable when given

corrective signal.

To ensure transmission to

and from control board.

Wiring, circuit,

transmission voltage

9 06 05 Communication error

between indoor and

outdoor units

Communication error lasts

4min or longer.

Restorable when given

corrective signal.

To ensure transmission to

and from control board.

Wiring, circuit,

transmission voltage

11 0B 30 External alarm signal

input

External signal is cut out for

10s or longer.

Restorable when given

corrective signal.

To control external

connection provided for

building.

External signal, wiring,

control board

12 03 20 Fault in outdoor

coil/suction line

sensor

Sensor is open-circuit or

short-circuit for 2min or

longer.

Restorable when given

corrective signal.

To test input signal of

system.

Hardware connection, I/O

voltage division

13 0D 31 Temperature shut-off Directional valve malfunction

repeats three times.

Restorable after repair. To prevent malfunction of

four-way valve.

Sensor, four-way valve,

system, control board

7 47 22

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Haier ESA412K User Manual Page 167

Comments to this Manuals

Haier ESA412K User Manual Page 167

Comments to this Manuals

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