12
temperature alarm set point can only be set to a value of at least 5
colder than the
set point temperature of the unit. It cannot be set to the lowest temperature limit.
5.Setting the security code: When the unit is first setup to operate, the security
code to unlock the control is 06. After unlocking the unit, simultaneously push
SET
and
Silence
for 5 seconds. The display will show 06. Use the
and
key to change the security code. The choices are from 05 to 30. After a number is
chosen, do not touch the unit for 5 seconds. The control system will enter the locked
mode. The new code is effective.
6.Setting the Startup delay timer: In order to reduce the startup power surge after a
power outage, your Haier ULT incorporates a startup delay feature. This feature can
alter the startup sequence of the compressors in the freezer.
After the control is
unlocked, simultaneously push
SET
key and
key for 5 seconds.
The
temperature display shows the time delay to be 01 for 1 minute for the high stage
compressor to start after power up. This delay can be changed by pushing the
or
key to change the value from 1 minute to 10 minutes. The default value for
this delay is 1 minute. If this time delay startup is set at more than 5 minutes, the
equipment would take too much time to pull down the freezer temperature. If the power
source has sufficient capacity, there is no need to change the default value.
7.Alarm test and low battery test:
When the ULT unit is powered up,
simultaneously press the "Up" arrow and "Alarm Cancel" buttons for 5 seconds. The
buzzer alarm should sound and the alarm indicator should flash. At this condition, the 6
second test procedure starts. If the battery capacity is low, the low battery light indicator
will flash 6 times. If the battery is at full capacity, the low battery light does not light up
or flash. After 6 seconds, start the unit up. All indicators will light up for 6 seconds
without flashing. All electronic display windows will indicate a digit of 8 for 6 seconds.
When this is done, all display functions work properly.
Temperature Adjustment and Setting
13
----
Display and alarm
When the freezer is powered up, the display will show the actual freezer temperature,
set point temperature, and current voltage.
The display shows the following indicator lights.
Locked indicator:When the light is on, it means all set values are in the locked mode.
This is to prevent erroneous operations.
Network indicator:The indicator suggests that the network is in working mode.
Run indicator:When the light is on, it means the compressors are in working mode.
Regulator indicator:The lit indicator means the voltage stabilizer is in working mode to
boost or buck the voltage.
Backup System indicator:The lit indicator means that the backup cooling system is in
working mode.
Alarm
High
Temperature
Alarm
Low
Temperature
Alarm
Power Failure
Alarm
Voltage Improper
Alarm
Hot Condenser
Alarm
High Ambient
Temperature
Alarm
Probe Failure
Alarm
Low battery
Alarm
Alarm Trigging Condition
When this indicator is on,
reaches the warm alarm limit.
the units temperature
When this indicator is on,
the units temperature
reaches the low alarm limit.
Equipment loses power.
Supply voltage
exceeds the high or low limits.
1.Condensers filter element
is clogged.
2.Ambient emperature is too
high.
Ambient Temperature
exceeds 32 .
Main cabinet temperature
control sensor fails.
Condenser sensor fails.
Ambient sensor fails.
Heat exchanger sensor fails.
Battery capacity runs low or
battery switch is not turned on.
Indicator
Alarm indicator flashes.
Alarm indicator flashes.
Alarm indicator flashes.
Display shows temperature
and blank interchangeably.
Alarm indicator flashes.
Alarm indicator flashes.
Alarm indicator flashes.
Alarm indicator flashes, temperature
display alternates to show E2 and
cabinet temperature.
Alarm indicator flashes, temperature
display alternates to show E1 and
cabinet temperature.
Alarm indicator flashes, temperature
display alternates to show E0 and
cabinet temperature
Alarm indicator flashes, temperature
display alternates to show E3 and
cabinet temperature.
During the test, the alarm
indicator flashes.
Buzzer Sound
Buzzer delays 15
minutes to sound
intermittently.
Buzzer delays 15
minutes to sound
intermittently.
Buzzer delays for 1
minute to sound
intermittently.
Buzzer delay for 1
minute to sound
intermittently.
Buzzer sounds
intermittently.
When ambient
temperature exceeds
38
, buzzer sounds
intermittently.
Buzzer sounds
intermittently.
Buzzer sounds
intermittently.
Buzzer sounds
intermittently.
Buzzer sounds
intermittently.
Alarm Conditions
Display and Alarms
