Commercial Air Conditioner
Model: AU182AFERA
AD182AMERA, AS182AVERA
12. Temperature cutoff protection
In cooling mode, every time compressor runs for 1 minute after startup, the unit will check the
indoor coil temperature, when Tg>Tr
＋
5, the unit will shut off for 3 minutes, and then re-start up;
if it the temperature cutoff protection has occurred for 3 times contineously, the unit will stop and
alarm.
In heating mode (except for defrosting), every time compressor runs for 1 minute after startup,
the unit will check the indoor coil temperature, when Tg
＜
Tr
－
5, the unit will shut off for 3
minutes, and then re-start up; if it the temperature cutoff protection has occurred for 3 times
contineously, the unit will stop and alarm (in defrosting and in 2 minutes after defrosting is over,
the unit will not measure temperature).
13. EEPROM control
When outdoor being electrified, if parameter of EEPROM is different from the data of check sum,
EEPROM will be abnormal.
Once indoor receives the EEPROM abnormal signal from outdoor, the unit will display
EEPROM abnormal.
At this time, control and emergency operation will not be received. Only power off the unit, the
failure can be resumed.
14. Failure record
If there is no failure code record, nothing displays.
Failure code will be over automatically 10 seconds later.
According to the switch or the stop signal of remote controller, the failure record will be over.
For the unit with EEPROM, the failure record will be saved after power supply is reset.
15. Special functions
15.1 Auto-restart
a. Entering condition: In 7 seconds press the SLEEP button for 10 times, the buzzer sounds 4
times. At the same time, the present state will be saved in EEPROM.
b. After entering the auto-restart state, the indoor will execute as follow:
The indoor unit will run at the state set by the remote controller and the emergency set state,
and the present state will be saved in indoor EEPROM. The outdoor will run at the state set on
the panel and this state will be saved in EEPROM.
After entering the auto-restart, if being electrified after being powered off, the outdoor unit will
send the signal of the present operation and auto-restart signal to indoor panel. When panel
receives the feedback information, it will remain the auto-restart state.
c. Quit condition: in 7 seconds press SLEEP button 10 times, the buzzer will sound 2 times.
d. If in auto-restart state, set TIMER, and SLEEP functions, when being electrified after being
powered off, the unit memory will be OFF state.
15.2 Rated operation
15.2.1 Rated cooling
a. High speed at cooling, the set temperature is 16
℃
, press temp. “-“ and SET button
simultaneously, after the buzzer sounds 2 times, enter the condition.
b. In this condition, the unit will execute as follow: entering the rated frequency operation;
on the panel there will be cooling mode; in communication, there is rated indication.
c. Quit condition: once receiving the remote signal, the unit will quit the rated operation
and then turn into remote control state.
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