10
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..
