16
7.3.5
7.3.6
7.3.7
7.4
7.4.1
7.4.2
7.4.3
7.5
If the above phenomenons existed, the unit cannot resume to run, E4 will be display. Press ON/OFF button to
turn off the unit, repress ON/OFF button return to run at the original running mode.
Indoor ultra high temperature protection
In HEAT mode, when detected the evaporator tube temp. is too high, outdoor fan motor stop running;
when evaporator tube temp. get right, outdoor fan motor start up.
Low voltage protection
Compressor is turned on, if the current had been detected exceed 22A, the room ambient temp. achieved the
setting temp., the unit will stop. When compressor had stopped 3min, it will automatically return to the original
setting mode. When displaying E5, can not automatically return to the original running mode, that need to press
ON/OFF button to turn off the unit, then repress the ON/OFF button to resume to work.
Error codes
E1: Compressor high pressure protection E2: Indoor anti-freezing protection E3: Compressor low pressure protection
E4: Air exhaust pipe high temp. protection E5: Low pressure protection
Functions of Sleep and Timer:
Sleep
If controller is in COOL mode or DRY mode, after SLEEP operation run for 1hour, the presetting Tset will be
increased 1
℃，
2hours later, it will be increased 1
℃ ，
i
t ha s been decreased 2
℃
wi
thin 2hours in all, then it runs at the setting temp.
If controller is in HEAT mode, after SLEEP operation run for 1hour, the presetting Tset will be decreased 1
℃
2 hours later it will be decreased 1
℃
, it has been decreased 2
℃
within 2hours in all, then it runs at the setting temp.
There is no SLEEP function in FAN mode and AUTO mode.
Timer on
At powered on, the timer on could be set, when the time arrived, the controller runs at the original setting mode,
the time interval is 0.5h, setting range is 0.5-24h.
Timer off
At operating, the timer off could be set, if the time arrived, the unit will turned off, the time interval is 0.5h,
setting range is 0.5-24h.
Other control
