Requirements Of Battery Control; Meanings Of Fault Codes - Haier DW-86L338 Service Manual

two fans will be turned off.

5. Requirements of battery control

There is a battery power switch on the equipment, which will be turned on before normal
start. The equipment will enter normal operating status only it is connected to AC power
satisfying the equipment requirement. When AC power can provide the normal power
supply, the equipment can charge the battery as required. When AC power is interrupted
due to accident, the battery can supply the display screen, to realize normal display. When
the battery discharge is less than or equals 10.5V, then the battery will stop supplying the
display screen, without any display. If the power will be completely disconnected when
the battery can provide the normal power, it only needs to pull out AC power wire and
shut off the battery on equipment, and nothing will be displayed on the display screen.

6. Meanings of fault codes

When there is any trouble with the sensor, "Sensor Fault" indicating lamp lights
①When the main sensor has any trouble, actual temperature will be alternatively
displayed on the display screen and the code is E2.
②When the condenser has any trouble, actual temperature will be alternatively displayed
on the display screen and the code is E1.
③When the ambient temperature sensor has any trouble, actual temperature will be
alternatively displayed on the display screen and the code is E0.
④ When the heat exchange sensor has any trouble, actual temperature will be
alternatively displayed on the display screen and the code is E3.
⑤When temperature of the heat exchanger picked up by the sensor≥90℃, the alarm
displays E4.
⑥During alarm testing, when the battery switch isn't connected or the battery is low,
41 / 88