Haier DW-40L508 Display and alarm, Time setting for automatic alarm recovery

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Display and alarm

Display and alarm

Upon connecting to the power supply, the freezer will be on and the display screen will show the freezer’s internal temperature.

Prompts for the working state of display panel:

“Lock” indicator: if the indicator lights up, it means that all keys are locked to avoid misoperation.

“Alarm” indicator: if the indicator lights up or flashes, it means that a fault occurs. Functions of keys:

Cancel buzz: in the locked or unlocked state, press the “Cancel buzz” key at the time of alarm, the alarm sound will be cancelled and the visual alarm will not be cancelled.

Alarm test: it is used to test normal working state of the alarm system and low battery charge level. In the unlocked state, press this key, all the indicators will light up, the buzzer will give an alarm and all digital tubes display “8”. In the locked state, press this key at the time of alarm, corresponding fault alarm code will display. Please identify the fault causes according to the table below.

Alarm

State

 

 

 

 

Fault

Indication

Buzzer

 

 

 

 

 

 

 

 

 

 

code

 

 

 

 

 

 

 

High

When

the

internal

E9

The

indicator

When

the

freezer

is

temperature

temperature

is

higher

 

flashes

 

turned on for the first

alarm

than the set temperature

 

 

 

time, the

buzzer alarm

 

for

high

temperature

 

 

 

function

is

activated

 

alarm

 

 

 

 

 

 

after 5

hours

according

Low

When

the

internal

E10

The

indicator

to the default settings; in

temperature

temperature

is

lower

 

flashes

 

normal

operation,

the

alarm

than the set temperature

 

 

 

buzz alarm is given after

 

for

low

temperature

 

 

 

15min

 

 

 

 

 

alarm

 

 

 

 

 

 

 

 

 

 

 

Power-dow

Power-down of the

/

The

alarm

the buzz alarm is given

n alarm

freezer

 

 

 

 

indicator

after 30s

 

 

 

 

 

 

 

 

 

 

flashes;

black

 

 

 

 

 

 

 

 

 

 

 

 

screen

and

 

 

 

 

 

 

 

 

 

 

 

 

actual

internal

 

 

 

 

 

 

 

 

 

 

 

 

temperature

 

 

 

 

 

 

 

 

 

 

 

 

show alternately

 

 

 

 

 

Over-high

Ambient

temperature

E14

The

indicator

 

 

 

 

 

ambient

above 38

 

 

 

flashes

 

 

 

 

 

 

temperature

 

 

 

 

 

 

 

 

 

 

 

 

 

Abnormal

Internal main sensor at

E6

The

indicator

Buzz alarm

 

 

sensor

fault

 

 

 

 

 

flashes

 

 

 

 

 

 

 

Ambient

temperature

E0

The

indicator

 

 

 

 

 

 

sensor at fault

 

 

flashes

 

 

 

 

 

 

Low

Insufficient

 

battery

E5

The

indicator

 

 

 

 

 

battery

charge

or

the

battery

 

flashes 3 times

 

 

 

 

 

charge

switch is not on

 

 

 

 

 

 

 

 

 

level

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

Always turn on the battery switch before starting the freezer. The freezer will enter normal working state and charge the battery upon connecting to an AC power supply meeting its requirements. In case of AC power failure, the battery will energize the display screen for normal display. When the voltage of battery reduces to less than a specified value due to discharge, it will stop energizing the display screen and thus the display screen will not display any longer. When the battery is able to supply electricity normally, to completely cut off the freezer’s power supply, just pull out its AC power cord and turn off its battery switch. Then the display screen will not display any longer.

Time setting for automatic alarm recovery

At the time of alarm, press the “Cancel buzz” key on the display panel, buzz alarm will be cancelled (remote alarm will not be cancelled).

If alarm conditions remain, the buzz alarm will automatically recover after a pause of 30min.

Remote alarm terminals

The remote alarm terminals are located in the compressor compartment at the back of freezer. Alarm signals are sent by these terminals with carrying capacity of DC 30V, 2A. Contact output:

In normal conditions, both ends of connecting wire of remote alarm terminals are open circuit. In alarm conditions, both ends of connecting wire of remote alarm terminals are closed circuit.

To use the remote alarm function, connect the circuit as shown in the figure below. Note: The remote alarm function is limited to three alarm modes - high temperature alarm, low temperature alarm and power-down alarm.

Note: If several alarms sound simultaneously, each fault code displays 3s.

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Contents Medical Low-Temperature Freezer Operating InstructionsContents Product featuresSafety precautions ComponentsSafety precautions Precautions for handling Precautions for useUse InstallationCommissioning Temperature adjustment and setting UseDisplay and alarm Time setting for automatic alarm recoveryRemote alarm terminals Display and alarmEquipment scrapping Routine maintenanceFault clearance Rechargeable battery recycling SpecificationsOptions Refrigeration principle and circuit diagramOptions After-sales service Calibration and adjustment of the recorder

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