User manual

Page 11 of 16
3. Multi protective function
3.1 Anti-freezing protecting control:
When the ambient temperature is low while in Cooling Mode, the compressor and water
motor will stop working if the copper coil temperature reaches <2℃ for over 20 seconds.
When the copper coil temperature increases to >8℃, the protection will be stopped
automatically.
3.2、Water-full protection:
When the water level in the internal water tank is surpassing the maximum level, the
unit will alert automatically and “P2” will flash on the LCD screen. Please discharge
water in the machine according to page 12 - “Water Drainage”
3.3 Compressor delay-protection
Except for the first power-on, (or when changing from Cooling to Heating mode) the
compressor can start instantly.
The compressor also runs under a 3 minute delay protection function.
3.4 Compressor protection
In cooling, dehumidifying and heating mode, if the temperature difference between
the coil temperature and room temperature is less than 3℃, for more than 30
minutes, the machine will enter ‘no refrigerant’ compressor protection mode.
The compressor and water spring motor will stop working.
The up fan runs at low speed and the down fan stops running
“E3” will appear on the LCD screen.
Press any key on the control panel; the background light will illuminate for 10 seconds.