13
3.4.7.2
Defrosting:
Compressor and outdoor fan motor will stop working after the unit entering defrosting running. 5
5seconds later, 4-way reversing valve will close. Another 5 seconds, compressor starts running. When the
time of the compressor running is for more than 8 minutes or Toc
≥
35
℃
, compressor stops. 55 seconds
later, 4-way reversing valve will open. Another 5 seconds later, compressor and outdoor fan motor will
restart working and exit defrosting operation. In defrosting operation, the time of compressor running is at
least 3 minutes. Cool-airflow-prevention and blowing residue heat are both effective.
3.4.8 Testing codes:
Code 1 is to set test run (Not effective for “SMART” mode and “DEHUMIDIFICATION” mode. After entering
testing run, no matter what is the set temperature or indoor temperature, the unit will run as the set cooling
or heating mode and will also not detect stopping condition. The max. running time is 60 minutes.)
Code 2 is to set fast testing.
Code 3 is to set auto-diagnosis.
Code 4 is to cancel the above setting.
There only can be one setting each time in the tests above.
3.4.9 Failure code display and protection
A. Temperature can be checked by codes, code 11 displays room temperature, code 12 displays
indoor pipe temperature, code 13 displays outdoor pipe temperature.
B. Code 14 displays abnormal information.
E0 displays normal operation. P2 displays heating overload.
P3 displays freeze-prevention protection.
F1: The circuit of room temperature sensor is damaged or abnormal.
F2:The circuit of indoor pipe temperature sensor is damaged or abnormal.
C.The circuit of room temperature sensor is abnormal---Pause light flashes and the unit stops.
D.The circuit of indoor pipe temperature sensor is abnormal---Timer light flashes and the unit stops.
E.The circuit of outdoor pipe temperature sensor is abnormal---Run light flashes and the unit stops.
3.5 Other functions
3.5.1 Auto-diagnosis
The Auto-diagnosis functions are in the following steps:
Buzzer beeps 1s
→
no output 0.5s
→
3 leaves indicator lights 0.5s
→
2 leaves indicator lights 0.5s
→
one
leaf indicator lights 0.5s
→
pause indicator lights 0.5s
→
timer indicator lights 0.5s
→
power indicator lights 0.5s
→
running indicator lights 0.5s
→
running compressor on 0.5s
→
outdoor fan motor 0.5s
→
4-way reversing
valve 0.5s
→
AUH 0.5s
→
indoor fan motor high level 0.5s
→
indoor fan motor medium level 0.5s
→
indoor fan
motor low level 0.5s
→
1FLAP-a 0.5s
→
1FLAP-b 0.5s
→
1FLAP-c 0.5s
→
1FLAP-d 0.5s
→
2FLAP-a 0.5s
→
2FLAP-b 0.5s
→
2FLAP-c 0.5s
→
2FLAP-d 0.5s
→
all output 0.5s
→
no output 0.5s
→
Buzzer beeps 1s …...
3.5.2 Time reducing:
