Toyotomi TAN2-A53EW Service Manual page 17

INDICATION LAMP
Micro computer self-diagnose the points of the troubles and inform it by the combination of the status (On,Flush, or
Off)of three lamp indicators on the front panel of the indoor unit.
INDICATION LAMP
POWER TIMER OPERATION
INDICATION TIME
(green) (yellow) (green)
OFF OFF OFF
TAN, TAG not work at all
FLASHING OFF OFF
alarm indication appears
immediately when press
FLASHING ON ON
the operation switch
ON
FLASHING FLASHING
OFF OFF FLASHING
TAN, TAG don't work at all,
and after 20 sec., operation
normal lamp indication
lamp is flashing (2 min. in
turn alarm when
case of power on)
something is wrong with
TAN, TAG
FLASHING OFF FLASHING
once stop running with
power lamp lighting when
something is wrong with
TAN, TAG, and start
FLASHING FLASHING OFF running again after 3
20 min.
later after that in case of
reoccurrence, alarm
indication appears
just after main power on
or just after start running
FLASHING ON FLASHING
through remote controller,
alarm indication appears
[NOTE.1] Measure the resistance by chan ging the pole of the tester by turns.
ALARM APPEARANCE, PORTION, PARTS
SEEMED WRONG
short or open of sensor,
temperature or incomplete
insertion of connector
error of transmission
CT disconnection
protective action against
excess current
AC current detection
accident of controller
not cool down
not warm up
water leakage
nasty smell
TROUBLESHOOTING GUIDE
POWER SUPPLY check the plug inserted into the outlet and the power supply
REMOTE CONTROL emergency operation (display of remote controller is faint or not)
check the electric continuity by tester
TAN FUSE (3.15A)
check the resistance by tester [see fig.
TAN TRANSFORMER
TAN TERMINAL BLOCK check the electric continuity by tester
PCB (RECEIVER & DISPLAY) emergency operation
MIS-WIRING OR RARE CONTACT check the wiring connection and rare contact
SENSOR, TEMP. ROOM check the resistance by tester [see table 1]
check the resistance by tester [see table 2]
SENSOR, TEMP. HEAT EXCHANGER
check the resistance by tester [see table 2]
SENSOR, TEMP. DEFROST
check the wiring connection and rare contact
MIS-WIRING OR RARE CONTACT
THERE IS SOMETHING NOISY high-frequency radio, high-frequency generator, and amateur radio
AROUND TAN, TAG
TAG TRANSFORMER check the resistance by tester [see fig.1]
accident of rectifier stack or PCB (TAG main)
CURRENT FUSE (2.0A) FUSING
(ON THE PCB (TAG MAIN)
PREVENTION FOR OVERHEATING leak of gas, or cut off prevention for overheating relay
RELAY(OHR)
change PCB (TAG main)
CUTTING OFF CT
other than described above
COMPRESSOR BREAKDOWN
check the proper voltage of power supply and use an exclusive
BY DROP VOLTAGE
power supply
check by eyes
DEFECTIVE WIRING CONTACTS
check the pressure of gas [check performance curve diagram ]
EXCESS GAS
if the scale of the tester swings instantly to "zero
CAPACITOR, COMPRESSOR
[NOTE.1]
other than described above
COMPRESSOR LOCKING
after main power on, if alarm indication appears, PCB
PCB (TAN MAIN)
(TAN main) should be replaced
after start running through remote controller, if alarm indication
PCB (TAG MAIN)
appears, PCB (TAG main) should be replaced
GAS LEAKAGE check the point of leakage measure the pressure of compressor
during fixed operation
SENSOR, TEMP. ROOM check the resistance by tester [see table 1]
check the resistance by tester [see table 2]
SENSOR, TEMP. HEAT EXCHANGER
FAN MOTOR (TAN) check the voltage between blue and yellow in connector [see fig.2]
if it is AC 110V
4-WAY VALVE check the resistance by tester [see fig.3]
check the blockage of air inlet & outlet of TAN, TAG
SHORT CYCLE
(INSUFFICIENT AIR CIRCULATION)
DRAINAGE check the drain hose by eyes (it might be folded or choked)
MIS-INSTALLATION check the TAN whether lean or not
FILTER IS CHOKED check by eyes and clean it
NO USE FOR A LONG TIME
NASTY SMELL use deodorizer
(CIGARETTE, FURNITURE, ETC.)
– 16 –
METHOD OF CHECK
(press the ON/OFF button of remote controller in case of reset)
230V, TAN fan motor should be replaced