– 16 –
TROUBLESHOOTING GUIDE
common terminal
(5)
(1)
tester
resistance
terminal block
CHECK A FOLLOWING STEPS
〔
fig. 3
〕
Voltage of IN fan motor on the IN PCB (main)
〔
fig. 1
〕
Voltage of OUT fan motor on the OUT PCB( main)
〔
fig.4
〕
Resistance of 4-way valve coil
〔
fig. 5
〕
Resistance of IN louver motor
Normal:1.5k
1
※
Take off the connector and check the Resistance of 4-way valve coil.
Normal:360
〜
390
1
Take off the connector and check the resistance between
the common terminal and each terminal.
《
Check the IN PCB(main)
》
Measure the voltage between the connector pins in the back
of IN PCB(main).
attention
electric shock
Normal:110V
〜
230V
〔
fig. 2
〕
Continuity of current fuse on the OUT PCB(filter)
yellow
blue
red
tester
voltage
IN fan motor
connector
4-way valve coil
1.5k
Ω
W
R
B
GR
10
AC230V
Measure the voltage between white and black in the connector.
18
AC230V
WBR
B
While the operation switch is turned on, the function of control board
is considered normal as long as the voltage difference shows AC230V
when the voltage is measured between the white and the black terminals,
and between the black and the grey terminals respectively.
B
BR
W
: BLACK
: BROWN
: WHITE
B
GR
R
W
: BLACK
: GRAY
: RED
: WHITE
Summary of Contents for S1731
Page 24: ... 23 ELECTRIC CIRCUIT DIAGRAM S1731Outdoor S1735Outdoor ...
Page 31: ... 30 PCB AC 377 AC 379 SCHEMATIC DIAGRAM AND PCB S S1731Outdoor S1735Outdoor Bottom View ...
Page 32: ... 31 FILTER PCB AC 378 SCHEMATIC DIAGRAM AND PCB S S1731Outdoor S1735Outdoor Bottom View ...
Page 34: ... 33 SCHEMATIC DIAGRAM AC 377 AC 379 SCHEMATIC DIAGRAM AND PCB S S1731Outdoor S1735Outdoor ...
Page 35: ... 34 FILTER PCB AC 378 SCHEMATIC DIAGRAM AND PCB S S1731Outdoor S1735Outdoor ...
