Functions and control
18
7.1.8.2 If the switch is kept pressed for 5 seconds, buzzer ring two times and unit enter enter test run mode.
7.1.8.3 Press the switch again, and then closes.
7.1.8.4 Enter emergency operation from timer mode, then timer is cancelled.
7.1.9 Test run:
7.1.9.1 The temperature sensor of inlet air doesn’t work, and compressor starts (but subject to the limit of
-minute delay excluding the first time), and high wind, cooling, and air door is open. The indoor fan motor runs, running
indicator lights up, compressor relay and the one of outdoor fan motor is closed
7.1.9.2 During test run:
The prevention of freezing of evaporator doesn’t work.
Current cross control doesn’t work.
The control of current cross peak expiration doesn’t work.
Temperature control doesn’t work.
Temperature expiration control doesn’t work.
7.1.10 memory function
The memory function of power down is available, and the auto recovery function of power on is optional. (In auto,
heating, cooling, or defrosting status, press the “sleeping” button 10 times within 5 seconds, and the auto recovery
function of power on can be set on/off. If the buzzer rings 4 times, the the auto recovery function of power on is
available; If the buzzer rings 2 times, the the auto recovery function of power on is unavailable.)
If there is no EEPROM, the unit is taken off the ‘off’ function of the memory function of power down. But the
memory function of power down can also be set on/off, and the data is the default value of chip.
7.1.11 Alarm from indoor fan motor:
2 minutes later after the indoor fan motor is charged, and the impulse from fan motor is not detected, hen send
alarm signals.
7.2 Value of Thermistor
7.2.1 Indoor unit
Room sensor
R25
=23K ±3.5%
B25
/50
=4200K±3%
Temp.(
)
Max.(K ) Normal(K ) Min.(K )
Tolerance(
)
-30 568.8372 501.0746 440.8435 -1.97
1.75
-29 530.9600 468.6491 413.1441 -1.95
1.74
-28 495.8488 438.5314 387.3645 -1.93
1.72
-27 463.2850 410.5433 363.3602 -1.91
1.71
-26 433.0683 384.5212 340.9980 -1.90
1.70
-25 405.0156 360.3153 320.1558 -1.88
1.69
-24 378.9588 337.7879 300.7211 -1.86
1.67
-23 354.7440 316.8126 282.5905 -1.84
1.66
-22 332.2300 297.2732 265.6686 -1.82
1.64
-21 311.2873 279.0627 249.8676 -1.80
1.63
-20 291.7969 262.0831 235.1067 -1.78
1.62
