Service manual 
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10.8.5 Auto wind at heating mode (T=indoor temp.) 
 
10.8.6 Indoor evaporator high-temperature protection at heating mode 
(T=indoor exchanger temp.) 
 
10.8.7 The louver opens to Standard Angle ANGLHEAT when power is on for the first time 
 
10.9 Defrosting mode(available for heating mode) 
Defrosting condition: Defrosting starts when either of the following  ①&②: 
① A and B are satisfied: 
A: The compressor keeps running for 40 minutes or more. 
B: The temperature difference of evaporator and room temperature meets one of the following: