Electronic Control Unit; Temperature Setpoint; Alarm - Dometic AC 8500 Operating Instructions Manual

Electronic control unit

Temperature display

Temperature Setpoint

• The electronic control has been set up with a fixed set-point-temperature. This set-
point can be changed within a predefined temperature range (0°C to +12°C) in
steps of 1°. Check the setpoint before operating the unit. To modify the temperature
set point, follow the instructions below.
• To modify the Setpoint, proceed as follows :
• Access the menu by pressing and quickly releasing the "set" -key. The label of the
"SEt" folder appears.
• To display the Setpoint value, press the "set"-key again. The value appears on the
display.
• To change the Setpoint value, use the "UP" and "DOWN" keys within 15 seconds.
• If no key is activated during 15 seconds or if the "fnc"-key is pressed, the last
entered setpoint will stay in memory and the control switches back to normal
operating mode.
IMPORTANT :
• At continuous operation with a setpoint temperature lower than 2°C, the risk of
frost building on the evaporator increases, which leads to decreasing cooling
capacity. The refrigerator must be defrosted in regular intervals (see chapter
"Defrosting")

Alarm

• The electronic control unit is equipped with an optical temperature alarm system :
In case of high or low temperature, the LED "Alarm" on the display lights up.
• The alarm temperatures are set to 5° above resp.. below the set-point-
temperature. When changing the set-point-temperature, the alarms will
automatically change.
• During an alarm period following error code will be displayed by pressing the "set"-
key : "AH1" for high alarm; "AL1" for low alarm.
• To avoid unnecessary alarms during door opening, the alarm signal will only appear
20 minutes after an alarm value has been stably reached.
LED "Alarm"
LED "Compressor fan operation"
LED "Compressor operation"
21
key "set"