system will be off. All the power will be off. Signal will be turn into E4. If the water full signal 
is off., the control system has to be pressed on or off to restart the operation 
10.8.4  E1:indicate the indoor temperature hot and 
resistance is in error thus control system will be off.  
10.8.5  E2:indicate the indoor temperature hot and 
resistance is in error thus control system will be off.  
10.8.6  Refrigerent leaking protection display as E3 
 
Compressor turn on, if the tolerance is ≤5℃ at between indoor temperature and fan coil after operation 
for 15 min.The compressor will be turn off, and upper fan system will be running at the set speed.The 
signal display E3 and press the power key or power off to clear this signal.