Toyotomi TAN/TAG-A28EWI Service Manual page 23

TAN/TAG-A53EWI
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
ALARM
POWER TIMER OPERATION
INDICATION TIME
(green) (yellow) (green)
OFF OFF OFF
TAN, TAG not work at all
FLASHING OFF OFF
alarm indication appears
FLASHING ON ON
immediately when press
ON ON FLASHING
the operation switch
FLASHING ON OFF
FLASHING
OFF
ON
ON FLASHING ON
OFF OFF FLASHING
normal lamp indication
TAN, TAG don't work at all,
turn alarm when
and after 20 sec., operation
lamp is flashing (2 min. in
something is wrong with
case of power on)
TAN, TAG
FLASHING OFF FLASHING
OFF FLASHING OFF
30 ∼ 40 min. later after
compressor start, the yellow
lamp is flashing and TAN,
TAG stop running
FLASHING FLASHING OFF
FLASHING FLASHING ON
once stop running with
power lamp lighting when
or
something is wrong with
FLASHING ON
OFF
TAN, TAG, and start
running again after
3 ∼ 20 min.
later after that in case of
reoccurrence, alarm
ON
FLASHING FLASHING
indication appears
ON OFF FLASHING
FLASHING FLASHING FLASHING
in case of heating operation,
after a few minutes operation,
all lamps are flashing and
TAN, TAG stop running
15 sec. later after main
power on, or 60 sec.
later after start running
FLASHING ON FLASHING
through remote controller,
alarm indication appears
40 ∼ 70 sec. later after
start running, alarm
indication appears
OFF
ON FLASHING
90 sec. later after
start running, alarm
indication appears
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APPEARANCE, PORTION, PARTS
SEEMED WRONG
- -
short or open of sensor,
SENSOR, TEMP. HEAT EXCHANGER
temperature or incomplete
insertion of connector
MIS-WIRING (TAG-RC CONNECTING
error of transmission
CT disconnection
sensor discharge operate
because temperature of
discharge tube beyond
120°C, or sensor
discharge is bad quality
protective action against
excess current AC current
detection
protective action against
excess current DC current
detection
or
abnormal revolution of
compressor
rise of temperature
(above110°C) of power
module
excess voltage(DC)
in case of heating
operation, a rise of
SENSOR, TEMP. HEAT EXCHANGER
temperature (above 62°C)
of RC heat exchanger or
less quantity of RC blow
accident of controller
accident of fan motor
TROUBLESHOOTING GUIDE
(press the ON/OFF button of remote controller in case of reset)
check the plug inserted into the outlet and the power supply
POWER SUPPLY
emergency operation (display of remote controller is faint or not)
REMOTE CONTROL
check the electric continuity by tester
FUSE(3.15A)
check the electric continuity by tester
TAN TERMINAL BLOCK
PCB (RECEIVER & DISPLAY) emergency operation
PCB (TAN MAIN)
other than described above
check the resistance by tester [see table 1]
SENSOR, TEMP. ROOM
check the resistance by tester [see table 2]
check the resistance by tester [see table 2]
SENSOR, TEMP. DEFROST
SENSOR, TEMP. DISCHARGE check the resistance by tester [see table 3]
SENSOR, TEMP. OUTDOOR
check the resistance by tester [see table 2]
SENSOR, TEMP. POWER MODULE
take off the connector 16 , and check the resistance between 3 - 4
in the connector [see table 4][see fig. 1]
check the wiring connection and rare contact
CABLE) OR RARE CONTACT
check the electric continuity between 1 and 5 in connector by
tester.[see fig. 2]
CURRENT FUSE . (25A) FUSING
(if it is no continuity, both PCB (TAG main) and power module
(ON THE PCB (TAG MAIN))
should be replaced.)
CUTTING OFF CT change the PCB (TAG main)
GAS LEAKAGE
check the point of leakage (discharge temperature rise in case of
small leakage), measure the pressure of compressor during fixed
operation (operation frequency 58 Hz)
VALVE, SERVICE IS CLOSED
check the valve by eyes
PIPE
check by eyes
SENSOR, TEMP. DISCHARGE
check the resistance by tester [see table 3]
check the movement by reoperation
MOMENTARY STOP OF POWER
(IN CASE OF LIGHTNING)
check the power voltage (230V)
DROP OF POWER VOLTAGE
UNREASONABLE OPERATION
check the place of installation (blockage of air inlet & outlet of TAN,
UNDER OVERLOAD
TAG) check the excess gas
MOMENTARY STOP OF POWER
check the movement by reoperation
(IN CASE OF LIGHTNING)
DROP OF POWER VOLTAGE
check the power voltage (230V)
PCB (TAG MAIN)
ACCIDENT OF POWER MODULE See Flow Chart (P24)
COMPRESSOR LOCKING
SHORT CYCLE
check the place of installation (blockage of air inlet & outlet of
(INSUFFICIENT AIR CIRCULATION)
TAN,TAG) take off the connector 16 , and check the resistance
UNREASONABLE OPERATION
between 3-4 in the connector [see fig. 1]
UNDER OVERLOAD
operate after taking off the connector 12
PAM-MODULE
if the compressor works well over 3 minutes, PAM-MODULE
should be replaced
if the compressor stops running after a few seconds, PCB(TAG
PCB (TAG MAIN)
main) should be replaced
FILTER IS CHOKED check by eyes and clean it
check the resistance by tester [see table 2]
PCB (TAN MAIN) other than described above
15 sec. later after main power on, if alarm indication appears, PCB
PCB (TAN MAIN)
(TAN main) should be replaced
60 sec. later after start running through remote controller, if alarm
PCB (TAG MAIN)
indication appears, PCB (TAG main) should be replaced
check the rotation of fan motor (TAG)
FAN MOTOR (TAG)
check the current fuse (1A) on the wiring (red) for fan motor (TAN)
by tester
FAN MOTOR (TAN)
check the power voltage (230V)
check the voltage of fan motor [see fig.3]
– 22 –
METHOD OF CHECK