8.8.6 Indoor evaporator high-temperature protection under heating mode
Condition Compressor Outdoor fan
TE<TE8 On On
TE8<TE<TE7 On Off
Indoor exchanger temp. up
TE>TE7 Off Off
TE>TE9 Off Off Indoor exchanger temp. down
TE<TE9 On On
8.9 Defrosting operation (Available for heating only).
8.9.1 Defrosting condition:
When T3<0℃ and compressor runs 40 minutes.
T3: Temp. of condenser.
8.9.2 Ending condition of defrost
If one of following conditions is satisfied, end the defrost and turn into heating:
A.The defrost time has reached to 10 minutes.
B.T3>20. ℃
8.9.3 Time sequence of the whole defrosting procedure is as follows
Compressor
4-way Valve
Outdoor Fan
OFF
OFF
ON
ON
ON
8.10 Automatic operation mode
8.10.1 The air conditioner automatically selects one of the following operation modes: cooling,
heating or ventilation according to the difference between room temp. (TA) and set
temp. (TS).
TA—TS Operation mode
TA—TS>2℃ Cooling
-1 ≤TA℃ —TS≤+2℃ Fan-only
TA—TS<-1℃ Heating (Fan-only for cooling only type)
8.10.2 The indoor fan blows automatically in corresponding selected mode.
8.10.3 The motion of indoor fan’s blade should accord with the selected operation mode.
8.10.4 One mode should be carried out for at least 15 minutes once selected. If the
compressor cannot start for 15 minutes, reselect the operation mode according to the
room temp. and set temp., or reselect when the set temp. varies.
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