Service Manual
Installation and Maintenance
39
2.8 LED lamp, “Dual 8” NixieTube
a. When the unit is operating in cooling mode, LED lamp of cooling will be on.
b. Under fan mode, the LED lamp for fan mode will be on while under dry mode, the LED lamp for dry mode will be
on.
c. When fan speed is low, medium or high, the corresponding LED lamp (indicating low, medium or high speed) will
be on. If it is auto fan speed, the LED lamp of auto fan speed will be on.
d. When timer is set, the LED lamp of timer will be on. When the unit is under heating mode, the LED lamp for
heating mode will be on.
2.9 Set Temperature
a. The temperature can be set by button “ UP/DOWN” and the set temperature will be displayed on nixie tube. If
pressing “UP/DOWN” button for long time, the set temperature will be increased rapidly.
b.
or
can be switched on nixie tube by pressing buttons “UP” and “down” simultaneously for 3 seconds.
2.10 Button
a. ON/OFF button is used for turning on or turning off the unit. When the unit is turned off, press this button to turn on
the unit; when the unit is turned off, press this button to turn on the unit.
b. SWING button is used for controlling swing function. If swing function is set, press this button to turn it off. If it is
not set, press this button to turn it on.
c. FANSPEED button is used for adjusting fan speed. The fan speed will be circulated according to the sequence of
AUTO FAN, FANL, FANM, FANH, ATUO FAN.
d. UP, DOWN buttons are used for increasing and decreasing temperature and timer.
e. Mode button is used for mode switching. For heat pump unit, Mode will be circulated according to sequence of
AUTO, COOL, DRY, FAN, HEAT; The HEAT mode signal will be ineffective for cooling only unit and mode will be
circulated according to the sequence of AUTO, COOL, DRY, FAN.
f. Sleep function can only be set by the Sleep button on remote controller.
3. Protection Function
3.1 Freeze Protection
When the unit operates at cooling mode, if freeze protection is detected, the compressor will stop operation and
indoor fan will operate at set speed. When freeze protection is removed, the unit will resume previous operation after
3 minutes later.
3.2 Defrosting
When the unit starts defrosting, Heating indicator off for 0.5s and then blinks for 10s
.
3.3Detection of temperature sensor malfunction
a) The ambient temperature sensor is open or short circuit: dual-8 displays F1.
b) The Indoor evaporator temperature sensor is open or short circuit: dual-8 displays F2
c) The outdoor evaporator temperature sensor is open or short circuit: dual-8 displays F4
d) If malfunctions happened together, the malfunction protection code will be circularly displayed by rotary method.
e) If there is malfunction for temperature sensor, when the unit is on, the compressor or electric heating pipe will stop
operation, the fan will stop when the compressor or electric pipe reaches the temperature point.
4
ǃ
WIFI function
WIFI is defaulted on under exfactory status.
