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TROUBLESHOOTING GUIDE
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.
ALARM
INDICATION TIME
APPEARANCE, PORTION, PARTS
SEEMED WRONG
MOMENTARY STOP OF POWER
(IN CASE OF LIGHTNING)
DROP OF POWER VOLTAGE
check the plug inserted into the outlet and the power supply
emergency operation (display of remote controller is faint or not)
check the electric continuity by tester
check the electric continuity by tester
emergency operation
other than described above
15 sec. later after main power on, if alarm indication appears,
RC PCB (main) should be replaced
METHOD OF CHECK
(press the ON/OFF button of remote controller in case of reset)
ELECT
(green)
TIMER
(yellow)
OPERATE
(green)
INDICATION LAMP
OFF
OFF
OFF
RC, AE do not work at all
FLASHING
OFF
OFF
OFF
FLASHING
ON
ON
ON
ON
FLASHING
ON
ON
FLASHING
FLASHING
ON
OFF
alarm indication appears
immediately when press
operation switch
OFF
OFF
FLASHING
FLASHING
OFF
FLASHING
RC, AE don’t work at all,
and after 20 sec., operation
lamp is flashing (2 min. in
case of power on)
normal lamp indication
turn alarm when
something is wrong with
RC, AE
error of transmission
CT disconnection
OFF
OFF
FLASHING
OFF
FLASHING
FLASHING
OFF
OFF
or
30 ~ 40 min. later after
compressor start, the yellow
lamp is flashing and RC,
AE stop running
sensor discharge operate
because temperature of
discharge tube beyond
100
°
C, or sensor
discharge is bad quality
protective action against
excessive AC current
detection
FLASHING
FLASHING
ON
FLASHING
ON
FLASHING
once stop running with
power lamp lighting when
something is wrong with
RC, AE, and start
running again after 6 ~
26 min.
later after that in case of
reoccurrence, alarm
indication appears
in case of heating
operation, a rise of
temperature (above 62
°
C)
of RC heat exchanger or
less quantity of RC blow
FLASHING
FLASHING
FLASHING
FLASHING
FLASHING
ON
FLASHING
ON
FLASHING
in case of heating operation,
after a few minutes operation,
all lamps are flashing and
RC, AE stop running
only RC-1832PVK
accident of controller
accident of fan motor
90 sec. later after
start running, alarm
indication appears
rise of temperature
(above 100
°
C) of power
module
short or open of sensor,
temperature or incomplete
insertion of connector
RC PCB (MAIN)
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
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]
AE PCB
SHORT CYCLE
(INSUFFICIENT AIR CIRCULATION)
UNREASONABLE OPERATION
UNDER OVERLOAD
SENSOR, TEMP. ROOM
SENSOR, TEMP. HEAT EXCHANGER
SENSOR, TEMP. DEFROST
SENSOR, TEMP. OUTDOOR
SENSOR, TEMP. DISCHARGE
FILTER IS CHOKED
SENSOR, TEMP. HEAT EXCHANGER
RC PCB (MAIN)
FAN MOTOR (RC)
FAN MOTOR (RC)
POWER SUPPLY
REMOTE CONTROL
RC FUSE(3.15A)
RC TERMINAL BLOCK
PCB (RECEIVER & DISPLAY)
RC PCB (MAIN)
MIS-WIRING
(AE-RC CONNECTING CABLE)
OR RARE CONTACT
CUTTING OFF CT
CURRENT FUSE . FUSING
(ON THE AE PCB )
GAS LEAKAGE
VALVE, SERVICE IS CLOSED
PIPE
SENSOR, TEMP. DISCHARGE
UNREASONABLE OPERATION
UNDER OVERLOAD
check the place of installation (blockage of air inlet & outlet of RC, AE)
check the excessive gas
check by eyes and clean it
check the resistance by tester [see table 2]
check the voltage between blue and yellow in connector [see fig.3]
if it is not AC 110V
〜
230V, RC PCB (main) should be replaced
(except RC-1832PVK)
other than described above
check the movement by reoperation
check the power voltage (230V)
check the place of installation (blockage of air inlet & outlet of
RC, AE)
change the AE PCB
check the wiring connection and rare contact
check the resistance by tester [see table 1]
check the resistance by tester [see table 2]
check the resistance by tester [see table 2]
check the resistance by tester [see table 2]
check the resistance by tester [see table 3]
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)
check the valve by eyes
check by eyes
check the resistance by tester [see table 3]
check the electric continuity by tester.[see fig. 2]
(if it is no continuity, AE controller assy should be replaced.)
60 sec. later after start running through remote controller, if alarm
indication appears, AE controller assy should be replaced
-
-
-
※
In this table RC means indoor unit and AE means outdoor unit.
-
-
-
protective action against
excess current DC current
detection
UNREASONABLE OPERATION
UNDER OVERLOAD
MOMENTARY STOP OF POWER
(IN CASE OF LIGHTNING)
AE PCB
DROP OF POWER VOLTAGE
check the place of installation (blockage of air inlet & outlet of RC, AE)
check the excessive gas
check the power voltage (230V)
check the movement by reoperation
If the same alarm lamp will remain lit during operation even after
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
the AE controller assy, it implies the defect of the compressor.
abnormal revolution of
compressor
UNREASONABLE OPERATION
UNDER OVERLOAD
MOMENTARY STOP OF POWER
(IN CASE OF LIGHTNING)
AE PCB
COMPRESSOR LOCKING
DROP OF POWER VOLTAGE
COMPRESSOR LOCKING
check the place of installation (blockage of air inlet & outlet of RC, AE)
check the excessive gas
check the power voltage (230V)
check the movement by reoperation
If the same alarm lamp wil remain lit duning operation even after replacing
the RC controller assy, it implies the defect of the compressor.
INDICATION LAMP
