Electronic Controls; Modes; Alarms - EdgeStar CWB8420DZ Service Manual

4. Electronic Controls

4.1. Modes

Cooling mode:
When the set temperature is lower than the cabinet temperature, the unit operates in cooling
mode.
Heating mode:
When the set temperature is higher than the cabinet temperature, the unit operates in heating
mode.
Dynamic Climate/Silent modes:
In the Dynamic Climate mode the interior fan cycles on 20 seconds and off 30 seconds to
circulate the inside air even if the set temperature has been reached. Dynamic Climate mode is
NOT the factory preset mode because it adds noise and increases energy consumption. To
change to Dynamic Climate mode, touch and hold the DOWN key for approximately five seconds.
The cooler will beep five times to confirm Dynamic Climate mode is on. To change back to the
default Silent mode (energy saving mode), touch and hold the UP key for approximately five
seconds. The cooler will beep three times to confirm Silent mode is on.
Sabbath Mode:
Sabbath mode is available for the observance of certain religious holidays. This mode turns off the
displays, interior light and audible alarms and prevents them from turning on again. Normal cooling
operations will still take place. To initiate Sabbath mode, press the POWER and LIGHT keys at the
same time for at least 5 seconds. The indicator light will flash four times and confirm the Sabbath
mode is ON. Sabbath mode can be exited by repeating the above process. The Sabbath Mode will
automatically exit after 96 hours.

4.2 Alarms

Temperature Display
During normal operation, the temperature displays on the control panel and shows the
temperatures inside the appliance. The temperature display will flash if:
– A different temperature is being set.
– The temperature in one of the zones deviates by more than 5°C from the set temperature.
The temperature display flashing ensures that the temperature will not rise or fall unnoticed and
impair the wine.
To view the "set" temperature at any time, touch the "UP" or "DOWN" button. The set temperature
will temporarily flash on the LED display for 5 seconds. If the LED displays "--" and flashes it
indicates the temperature is out of range (-9 to 37ºC for Celsius and 16 to 99ºF for Fahrenheit.)
Temperature Alarm
An alarm will sound if the temperature in one of the zones rises or falls outside the temperature
range. The relevant temperature display will flash at the same time. The temperature the
appliance is set to determines the temperature the appliance recognizes as being too warm or too
cool.
The alarm will sound and the temperature display will flash:
- When you switch the appliance on, if the temperature inside the appliance is very different from
the temperature set.
- When there has been a lengthy interruption to the power supply.
- When too many items have been
- When the door is not been closed tightly.
put into the unit at one time.