Toyotomi TAG-A28EWI, Руководство по обслуживанию

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TROUBLESHOOTING GUIDE
CHECK A FOLLOWING STEPS
〔 fig. 2 〕 Voltage of TAN fan motor on the PCB(TAN main)
〔 fig. 1 〕 Continuity of current fuse on the PCB (TAG main)
0Ω
0Ω
FUSE
FUSE
＋ −
BL
PCB(TAG main)
TAN fan motor connector
R Y B W
4-way valve coil
1.5k Ω
common terminal
360
〜
390 Ω
power module
PCB(TAN main)
is Normal
Measure the voltage between
the connector pins in the back
of PCB (TAN main) during
cooling operation.
〔 fig. 3 〕 Resistance of 4-way valve coil
〔
fig. 4
〕
Resistance of louver motor
〔
fig. 5
〕
Resistance of Power module
Normal:1.5k Ω
※ Take off the connector and check the Resistance
of 4-way valve coil
Normal:360 〜 390 Ω
Take off the connector and check the resistance between
the teminals
Measure the resistance, six times between U-V, V-W, W-U respec-
tively by changing the polarity,and if all the figures show infinite (more
than hundreds of k
Ω ) then it is normal condition.
if not, it is defective.
Take off the connectors 1 & 5 on the PCB (TAG main), and
check the continuity.
between red ＋ and black − approx.DC325V
between yellow ＋ and black − approx.DC3
〜
5V
between white ＋ and black − approx.DC15V
PCB(TAG main)
15
16
DC12V±2V
＋
＋
−
DC22V±3V
7
−
(1)
(1)
(7)
(8)
PCB(TAG main)
15
7
16
−
＋
＋
−
(1)
(1)
(7)
(8)
over 1kΩ
over 1kΩ
〔 fig. 6 〕 Voltage of Power module 〔 fig. 7 〕 Resistance of PCB(TAG main)
Measure both voltages as follows
without taking off the connectors.
between 7 in the 16 and 1
in the 15 approx. DC 12V
± 2V
between 6 in the 15 and 7
approx. DC 22V
± 3V
Measure both resistances as follows
after taking off the connectors.
between 7 in the 16 and 1 in the
15 approx. over 1k
Ω between 6
in the 15 and 7 approx. over 1k Ω
PCB(TAG main) is normal.
Both power module
and PCB (TAG main)
are normal
TAN/TAG-A28EWI, TAN/TAG-A32EWI