Airwell YCV280, Installation And Maintenance Instructions Manual

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old
SW20-[1]
SW20-[2]
D1
D2
selection item
state
function description
changeover of
master/slave controller
ON
OFF
0
1
0
1
shorten time function
compulsory defrost
set as slave controller
set as master controller
indoor shorting time
without shorten time
send to compulsory defrost signal
normal operation
ON
OFF
Note: 1. D1, D2 are the diode, if the two terminals are disconnected, the state is "1"; if the two
terminals are connected with a jumper, the state is "0".
2. Only when two controllers control one indoor unit, one of wired controllers can be set as slave
controller, and set SW20-[1] as ON, the others keep the state when out of factory, set SW20-[1]
as OFF.
3. The old type: there are resistors of J03 and J06 beside the dip switch.
3. Instruction and function of selection switch
C or F
F
C
new
SW[1]
SW[2]
JP8
JP7
Introduction of dip switch on outdoor connecting board:
BM1,BM2,BM3,BM4,BM5: 8-bit dip switch
Identification:
Physical master unit : by setting dip switch, the unit number is 0. It is used to communicate with
indoor unit, also it is the organizer of outdoor communications as communication master unit.
Functional master unit : the outdoor with the highest priority of running, the priority class is 0.
Physical slave unit: by setting dip switch, the unit number is not 0.
Functional slave unit: the outdoor without the highest priority of running, the priority class is 1~3.
Group class setting : physical master unit setting is valid, which can be used for all the units. For
example, silence, snow-proof, piping length etc setting. Set all kinds of state on the physical master
unit as a representative.
Single class setting: only be used for the single unit, instead of the whole group. For example,
sensor backup running, inverter board selection etc.
In the following table, 1 is ON, 0 is OFF.
Dip switch definition:
BM1, BM2 are usually set by the personnel on site;
BM3, BM4 are usually used in the factory.
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