Toyotomi TAN-A70IV Service Manual page 14

INDICATION LAMP
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
ELECT TIMER OPERATE
INDICATION TIME
(green) (yellow) (green)
OFF OFF OFF
RC, AE do not work at all
FLASHING OFF OFF
FLASHING ON ON
ON ON FLASHING
alarm indication appears
immediately when press
ON FLASHING OFF
operation switch
FLASHING ON OFF
OFF OFF FLASHING
normal lamp indication
RC, AE 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)
RC, AE
FLASHING OFF FLASHING
OFF FLASHING OFF
30 ~ 40 min. later after
compressor start, the yellow
lamp is flashing and RC,
AE stop running
FLASHING FLASHING OFF
once stop running with
power lamp lighting when
something is wrong with
RC, AE, and start
running again after 6 ~
26 min.
FLASHING FLASHING ON later after that in case of
reoccurrence, alarm
or
indication appears
FLASHING OFF ON
ON FLASHING FLASHING
FLASHING FLASHING FLASHING
in case of heating operation,
after a few minutes operation,
all lamps are flashing and
RC, AE stop running
90 sec. later after
start running, alarm
ON FLASHING
OFF
indication appears
only RC-1832PVK
FLASHING ON FLASHING
In this table RC means indoor unit and AE means outdoor unit.
ALARM
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
100°C, or sensor
discharge is bad quality
protective action against
excessive AC current
detection
protective action against
excess current DC current
detection
abnormal revolution of
compressor
rise of temperature
-
(above 100°C) of power
module
in case of heating
operation, a rise of
-
temperature (above 62°C)
of RC heat exchanger or
less quantity of RC blow
accident of fan motor
accident of controller
-
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
RC FUSE(3.15A)
check the electric continuity by tester
RC TERMINAL BLOCK
PCB (RECEIVER & DISPLAY) emergency operation
RC 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
SENSOR, TEMP. OUTDOOR check the resistance by tester [see table 2]
SENSOR, TEMP. DISCHARGE check the resistance by tester [see table 3]
MIS-WIRING
check the wiring connection and rare contact
(AE-RC CONNECTING CABLE)
OR RARE CONTACT
check the electric continuity by tester.[see fig. 2]
CURRENT FUSE . FUSING
(if it is no continuity, AE controller assy should be replaced.)
(ON THE AE PCB )
CUTTING OFF CT change the AE PCB
GAS LEAKAGE
check the point of leakage (discharge temperature rise in case of
small leakage), measure the pressure of compressor during fixed
operation (emergency and test operation)
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 RC, AE)
UNDER OVERLOAD
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 RC, AE)
UNDER OVERLOAD
check the excessive gas
MOMENTARY STOP OF POWER
check the movement by reoperation
(IN CASE OF LIGHTNING)
check the power voltage (230V)
DROP OF POWER VOLTAGE
If the same alarm lamp will remain lit during operation even after
AE PCB
disconnecting the connector of the lead cable to the compressor,
it implies the defect of the AE controller assy.
If the same alarm lamp wil remain lit duning operation even after replacing
COMPRESSOR LOCKING
the AE controller assy, it implies the defect of the compressor.
UNREASONABLE OPERATION
check the place of installation (blockage of air inlet & outlet of RC, AE)
UNDER OVERLOAD
check the excessive gas
MOMENTARY STOP OF POWER
check the movement by reoperation
(IN CASE OF LIGHTNING)
check the power voltage (230V)
DROP OF POWER VOLTAGE
AE PCB
If the same alarm lamp wil remain lit duning operation even after replacing
the RC controller assy, it implies the defect of the compressor.
COMPRESSOR LOCKING
SHORT CYCLE
check the place of installation (blockage of air inlet & outlet of
(INSUFFICIENT AIR CIRCULATION)
UNREASONABLE OPERATION RC, AE)
UNDER OVERLOAD
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.3]
RC PCB (MAIN) if it is not AC 110V
(except RC-1832PVK)
FAN MOTOR (RC) other than described above
check the current fuse (1A) on the wiring (red) for fan motor (RC)
by tester
if the current fuse is cut, fan motor(RC) is defective
FAN MOTOR (RC)
if not, fan motor(RC) or PCB(RC main) is defective
check the power voltage(230V)
check the voltage of fan motor [see fig.6]
15 sec. later after main power on, if alarm indication appears,
RC PCB (MAIN)
RC PCB (main) should be replaced
60 sec. later after start running through remote controller, if alarm
AE PCB
indication appears, AE controller assy should be replaced
– 13 –
METHOD OF CHECK
(press the ON/OFF button of remote controller in case of reset)
230V, RC PCB (main) should be replaced