Testing - Haier Ab25S2Sa1Fa Manuel D’utilisation Et Manuel D’installation

15 Testing

15.1 Pre-delivery inspection list
After installing the device, check the items below. Once all are checked, turn off the device, then turn it
on again.
Number of
Digital
LED flashes
display of
on the PCB
the infrared
(circuit
signal
board)
receiver
LED6 LED1
0 1
0 2
0 7
0 8
0 12 E10
0 13
0 14 E14
0 11 E11
0 19 E19
3 5 E15
6 1 F41
Note:
The central unit notification can still indicate errors in the canopy. Here's how to check: If the central
unit error code is M (DECIMAL), the canopy unit display will show a hexadecimal code "M + 20"
(DECIMAL) when converted. For instance, if the central unit error code is 2, the canopy unit display
will flash an error code of 16 (2 → 2 + 20 = 22 → convert the decimal 22 into a hexadecimal to obtain
16).
For additional details about the failure of the central unit notification, please refer to the
troubleshooting table for the central unit notification.
For YR-E17A, if there's a communication error between the circuit board and the wire controller, 07
will flash on the main interface display instead of the checking interface display.
Failure of the ambient
E1 temperature sensor in the
canopy unit:
Failure of the tube
E2 temperature sensor in the
canopy unit:
Abnormal communication
E7 between the canopy unit and
the outdoor unit:
Abnormal communication in
E8
the canopy control wire unit:
Drainage system
malfunction:
Signal crossing the zero
C1
point is wrong:
Abnormality in the DC fan
motor in the canopy:
Leakage of R32 refrigerant:
The R32 detector is
abnormal.
Failure of outdoor unit
System pressure switch
Failure
The sensor is disconnected, damaged,
incorrectly positioned, or circuit is shorted.
The sensor is disconnected, damaged,
incorrectly positioned, or circuit is shorted.
Connection error or the power cable is
disconnected or the address settings of
the canopy unit are incorrect or electrical
interference or the PCB fails.
Connection error or the controller's power
cable is damaged or the PCB fails.
The pump motor is missing or incorrectly
positioned, or the float switch has slipped
or is incorrectly positioned, or the bypass
circuit is broken.
Error in detecting the signal crossing the
zero point.
The DC fan motor is disconnected or the
DC fan fails or the circuit fails.
Leakage of R32 refrigerant:
The detector is missing or damaged.
Inspect the central unit notification
Check the system pressure
24
Possible causes: