3.6.8 Note: in heating mode, “the compressor stops----indoor motor delays to stop” adjust if the pipe
blows remaining heat; “the compressor startup----indoor motor delays to start up” adjust if the pipe is
anti-cold air; in other conditions, the compressor and the indoor motor are allowable not to be in
company. In cooling mode, the motor will run according to the control, not together with the compressor.
3.6.9 Defrosting function in heating mode
In defrosting and when the compressor resumes to run for 3 minutes after defrosting is over, the unit will
not adjust the sensor failure.
Manual defrost:
In heating mode, the set temperature 30℃ and in high speed, in 5 seconds, press SLEEP button 6
times continuously, then the buzzer will sound 3 times, you can enter the manual defrosting. Send
manual defrost to outdoor unit, the indoor unit will control accordingly after received the outdoor defrost
signal, the procedure is as the same as the auto defrost; the quit is controlled by outdoor unit.
Auto defrost:
For the unit with outdoor PCB, please refer to the outdoor control functions.
For the unit with auxiliary electric heating function:
a. If the auxiliary electric heating function is working when the defrosting condition is met, please stop
electric heater firstly, 20 seconds later, defrosting can begin;
b. After defrosting, the unit will adjust the working state of electric heater according to the setting before
defrosting.
3.6.10 Auxiliary electric heating function (valid in heating mode or heating state in AUTO mode)
Enter condition: 1) ΔT>1 2) Thermostat ON and running for 1 minute 3) Tr<25℃
4) Indoor motor running 5) Electric heating function start signal available
6) The system working in heating mode or in heating state of AUTO mode
If the above conditions can all be met, the electric heating function will work.
Quit condition: 1) ΔT≤1 2) Thermostat OFF 3) Tr>26℃ 4) Indoor motor stops
5) Electric heating function start signal not available 6) The system in non-heating operation
If one of the above conditions can be met, the electric heater will stop.
3.8 Indoor motor compulsory speed control in heating mode: if indoor coil temperature Tg>56℃, indoor
motor LOW speed invalid, change to MIDDLE speed automatically; when Tg>60℃, indoor motor
MIDDLE speed invalid, change to HIGH speed automatically; when Tg below 52℃, resume the orIginal
fan speed, outdoor MCU will work in overheat protection due to the temperature value.
3.7 Special functions
3.7.1 CLOCK setting and TIMER function
The unit can set 24-hour TIMER ON/OFF, and the min. unit is 1 minute(the min. unit of set time is
concerned with remote controller), after being set, the TIMER lamp of indoor will be on, and after the
timer is over, the TIMER lamp will be off.
TIMER ON: RUN LED is off, compressor LED is off, and TIMER LED is on, the unit is in stop state. When
timer is over, the unit begins to run, and the timer LED is off. The unit operation begins from receiving the
timer signal for the last time. The SLEEP function only can be set before the TIMER ON begins.
TIMER OFF: the unit running, the TIMER LED on, while the timer is over, TIMER LED off, the unit will
stop, the sleep can be set, the sleep time will replace the original time of TIMER ON/OFF.
TIMER ON/OFF set at the same time: when the timer on/off is set, the timer LED will be off; the sleep
function can be set, the sleep time will replace the original time of TIMER ON/OFF.
3.7.2 SLEEP function (energy saving function at night)
3.7.2.1 Standard sleep function in cooling or dry mode, after running at SLEEP mode for 1 hour, the set
temperature will rise 1℃, another 1 hour later, the set temperature will rise another 1℃; the unit
Electric control functions
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