Toyotomi TAN-28HIM Service Manual page 16

INDICATION LAMP
- - -
- - -
- - -
- - -
In this table TAN means indoor unit and TAG means outdoor unit.
CHECK A FOLLOWING STEPS
fig. 1 Resistance of sensor (temp. power module)
TAG PCB(main)
Take off the connector, and measure the resistance between 2 and 3
in the connector.
fig. 3 Voltage of TAN fan motor on the TAN PCB (main)
blue
red
yellow
TAN fan motor
connector
Check the TAN PCB(main)
Measure the voltage between the connector pins in the back of
TAN PCB(main).
fig. 5 Resistance of louver motor
terminal block
Take off the connector and check the resistance between
the common terminal and each terminal.
not cool down
-
not warm up
water leakage
-
-
nasty smell
louver doesn' t work
-
table 4
3 2
upward
24
attention
electric shock
tester
Normal:110V
voltage
(5)
(1)
tester
common terminal
resistance
Normal:360 390
TROUBLESHOOTING GUIDE
GAS LEAKAGE
SENSOR, TEMP. ROOM
SENSOR, TEMP. HEAT EXCHANGER
FAN MOTOR(TAN)
4-WAY VALVE
SHORT CYCLE
(INSUFFICIENT AIR CIRCULATION)
DRAINAGE
MIS-INSTALLATION
FILTER IS CHOKED
NO USE FOR A LONG TIME
NASTY SMELL
(CIGARETTE, FURNITURE, ETC.)
LOUVER MOTOR
fig. 2 Continuity of current fuse on the TAG PCB (main)
FUSE(3A)
Take off the connectors 2 on the TAG PCB (main), and check
the continuity.
fig. 4 Resistance of 4-way valve coil
230V
Take off the connector and check the Resistance
of 4-way valve coil.
fig. 6 PCB(Power module)
1 2
AC AC
GR P.
Take off the connectors
Measure the resistance, between U-V, V-W, W-U, V-U, W-V,
U-W, respectively.
If all the figures show infinite (more than hundreds of k
similar one another(
condition.if not, it is defective.
– 15 –
check the point of leakage and measure the pressure of
compressor during fixed operation (emergency and test operation)
check the resistance by tester [see table 1]
check the resistance by tester [see table 2]
check the voltage between blue and yellow in connector [see fig. 3]
if it is AC 110V 230V, TAN fan motor should be replaced
check the resistance by tester [see fig.4]
check the blockage of air inlet & outlet of TAN, TAG
check the drain hose by eyes (it might be folded or choked)
check the TAN whether lean or not
check by eyes and clean it
use deodorizer
check the resistance by tester [see fig.5]
0
FUSE(15A)
4-way valve coil
Normal:1.5k
1.5k
W
3 V U
4 8
5 6 7
-N
+P
9
PCB(Power module)
in PCB(Power module).
1 9
30%) then the module is normal
0
) and