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