Toyotomi TAN-A70IV Service Manual page 15

INDICATION LAMP
ALARM
ELECT TIMER OPERATE
INDICATION TIME
(green) (yellow) (green)
- - -
- - -
- - -
- - -
In this table RC means indoor unit and AE means outdoor unit.
CHECK A FOLLOWING STEPS
fig. 1 Voltage of AE fan motor on the AE PCB
Measure the voltage between white and black in the connector.
fig. 3 Voltage of TAN fan motor on the PCB(TAN main)
BL Y W B R
between red and black
between yellow and black
between white and black
fig. 5 Resistance of 2-way valve coil
Take off the joint connector of 2-way
valve(TAN), and measure the
resistance of it.
APPEARANCE, PORTION, PARTS
SEEMED WRONG
not cool down
-
not warm up
water leakage
-
-
nasty smell
louver doesn' t work
-
B :BLACK
BR :BROWN
W :WHITE
11
W BR
B
AC230V
TAN fan motor connector
PCB(TAG main)
Measure the voltage between
the connector pins in the back
of PCB (TAN main) during
cooling operation.
approx.DC325V
PCB(TAN main)
approx.DC3 5V
is Normal
approx.DC15V
Normal:5.8k
5.8k
2-way valve coil
TROUBLESHOOTING GUIDE
check the point of leakage measure the pressure of compressor
GAS LEAKAGE
during fixed operation (emergency and test operation)
SENSOR, TEMP. ROOM check the resistance by tester [see table 1]
SENSOR, TEMP. HEAT EXCHANGER check the resistance by tester [see table 2]
check the voltage between blue and yellow in connector [see fig.3]
FAN MOTOR (RC)
if it is AC 110V ~ 230V, RC fan motor should be replaced
4-WAY VALVE check the resistance by tester [see fig.4]
SHORT CYCLE
check the blockage of air inlet & outlet of RC, AE
(INSUFFICIENT AIR CIRCULATION)
DRAINAGE check the drain hose by eyes (it might be folded or choked)
check the RC whether lean or not
MIS-INSTALLATION
FILTER IS CHOKED
check by eyes and clean it
NO USE FOR A LONG TIME
NASTY SMELL
use deodorizer
(CIGARETTE, FURNITURE, ETC.)
LOUVER MOTOR check the resistance by tester [see fig.5]
fig. 2 Continuity of current fuse on the AE PCB
fig. 4 Resistance of 4-way valve coil
Take off the connector and check the Resistance of 4-way
valve coil.
fig. 6 Resistance of louver motor
Take off the connector and check the resistance between
the teminals
– 14 –
METHOD OF CHECK
(press the ON/OFF button of remote controller in case of reset)
4-way valve coil
1.5k
Normal:1.5k
Normal:360
common terminal
360 390
0
390