Delta 21CK018C24, Instruction Manual

Page: 25 / 64

24
Outdoor ambient temp sensor
Outdoor ambient temp sensor
does not work
Outdoor ambient temp sensor works
DIP
000 001 010 011 100 101 110 111
T - - - -
- ≥
-3 <-3
≥
-3 <-3
≥
-3 <-3
t 44 44 60 90 30 30 60 44 90 90 120
T1 -2 -5 0 0 0 -2 -10 -2 -10 -2 -15
T2 15 20 20 20 20 20 15 20 15 20 15
In summary
：
If the compressor operates for t mins continuously under “heating” mode, the defrosting will start when the
defrosting thermistor is under or below T1 temperature for 1 min continuously. At the same time, the 4-way valve is
energized, the fan motor of outdoor unit stops running and the auxiliary electric heating device is energized. The
defrosting will stop after it goes on for 10 minutes continuously or the temp sensor detects the ambient temperature
over T2 .At the same time, the 4
℃
-way valve is de-energized, the fan motor of outdoor unit is energized and the
auxiliary electric heating device runs as per the setting of wired controller.
The defrosting stops immediately if the A/C is diverted to “COOLING” mode while the outdoor unit is defrosting.
Forced defrosting
:
When the forced defrosting button is pushed, the A/C will start to defrost promptly. At the same time, the 4-way
valve is energized, the fan motor of outdoor unit stops running and the auxiliary electric heating device is energized.
The defrosting will stop after it goes on for 10 minutes or the temp sensor detects the ambient temperature over T2 .
At the same time, the 4-way valve is de-energized, the fan motor of outdoor unit is electrified and the auxiliary
electric heating device runs as per the setting of wired controller.
DIP switch(SA1):
Warning: the default setting of DIP switch included in the WZ14301-1 main board of
outdoor unit:
DIP switch (SA1): Position 1,2,3to “ON”