Respekta WKSU46-19 User Manual page 29

Regular flash quit after 5 seconds detecting no press and new set temperature
save. LED display return to show actual temperature inside.
Child Lock（Combination key）
1. Lock ： Press both keys at the same time for 3 seconds to lock or lock
automatically in 15 seconds without pressing any key.
2. Unlock：Press both keys at the same time for 3 seconds to unlock.
Fahrenheit/Celsius display interchange
Switch temperature display between Fahrenheit and Celsius by pressing and holding
the key for 2 seconds.
Attention
1. For both upper and lower zone, the cooling temperature could be set from 5℃
-22℃. But lower zone temperature will equal to or be higher than upper zone.
2. Alarm sound: when the system malfunction occur and alarm sound, press any
key on the control panel to cancel the alarm sound.
3. Temperature sensor failure:
When the temperature sensor failures occur, error code displays. E1 for open circuit;
E2 for short circuit..
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