Toyotomi TAN-A28FWIS Service Manual page 15

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 do not work at all
FLASHING OFF OFF
alarm indication appears
FLASHING ON ON
immediately when press
ON ON FLASHING
operation switch
FLASHING ON OFF
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
once stop running with
power lamp lighting when
something is wrong with
TAN, TAG, and start
running again after 3 ∼
FLASHING FLASHING ON
20 min.
or
later after that in case of
reoccurrence, alarm
FLASHING OFF ON
indication appears
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
- - -
- - -
- - -
- - -
※In this table TAN means indoor unit and TAG means outdoor unit.
APPEARANCE, PORTION, PARTS
SEEMED WRONG
- -
short or open of sensor,
temperature or incomplete
insertion of connector
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
excessive AC current
detection
protective action against
excessive DC current
detection
or
abnormal revolution of
compressor
in case of heating
operation, a rise of
temperature (above 58°C)
of TAN heat exchanger or
less quantity of TAG blow
accident of controller
not cool down
-
not warm up
water leakage
-
-
nasty smell
louver doesn' t work
-
TROUBLESHOOTING GUIDE
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
TAN FUSE(3.15A)
check the electric continuity by tester
TAN TERMINAL BLOCK
emergency operation
PCB (RECEIVER & DISPLAY)
TAN PCB (MAIN)
other than described above
check the resistance by tester [see table 1]
SENSOR, TEMP. ROOM
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 resistance by tester [see table 3]
SENSOR, TEMP. DISCHARGE
MIS-WIRING (TAG-TAN CONNECTING
check the wiring connection and rare contact
CABLE) OR RARE CONTACT
check the electric continuity by tester.[see fig. 1]
CURRENT FUSE . (3A,12A) FUSING
(if it is no continuity, TAG PCB (main) should be replaced.)
(ON THE TAG PCB (MAIN))
CUTTING OFF CT change the TAG PCB (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]
UNREASONABLE OPERATION
check the place of installation (blockage of air inlet & outlet of TAN,
UNDER OVERLOAD
TAG) check the excessive gas
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
MOMENTARY STOP OF POWER
check the movement by reoperation
(IN CASE OF LIGHTNING)
DROP OF POWER VOLTAGE
check the power voltage (230V)
TAG PCB (MAIN)
ACCIDENT OF PCB
See Flow Chart (P16)
(POWER MODULE)
COMPRESSOR LOCKING
FILTER IS CHOKED check by eyes and clean it
SENSOR, TEMP. HEAT EXCHANGER check the resistance by tester [see table 2]
check the voltage between blue and yellow in connector [see fig.2]
TAN PCB (MAIN)
if it is not AC 110V ∼ 230V, TAN PCB (main) should be replaced
FAN MOTOR (TAN) other than described above
15 sec. later after main power on, if alarm indication appears,
TAN PCB (MAIN)
TAN PCB (main) should be replaced
60 sec. later after start running through remote controller, if alarm
TAG PCB (MAIN)
indication appears, TAG PCB (main) should be replaced
check the point of leakage measure the pressure of compressor
GAS LEAKAGE
during fixed operation (operation frequency 58 Hz)
check the resistance by tester [see table 1]
SENSOR, TEMP. ROOM
SENSOR, TEMP. HEAT EXCHANGER check the resistance by tester [see table 2]
check the voltage between blue and yellow in connector [see fig.2]
FAN MOTOR (TAN)
if it is AC 110V ∼ 230V, TAN fan motor should be replaced
4-WAY VALVE check the resistance by tester [see fig.3]
SHORT CYCLE
check the blockage of air inlet & outlet of TAN, TAG
(INSUFFICIENT AIR CIRCULATION)
DRAINAGE check the drain hose by eyes (it might be folded or choked)
check the TAN 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.4]
– 14 –
METHOD OF CHECK
(press the ON/OFF button of remote controller in case of reset)
TAG) check the excessive gas