IVT 09LR-N, Руководство по обслуживанию

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12LRN
3 – 7
5. Louvers do not move
6. There is noise in TV/radio
7. Malfunction occurs
8. Compressor does not start
Open-circuit or short-circuit in wir-
ing of light receiving section. Check if wires of light receiving
section are caught. Wires of light receiving section
should not have any damage
caused by pinching. Replace wires of light receiving
section.
Light receiving unit is defective Check signal receiving circuit (mea-
sure voltage between terminals 8
and 10, 9 and 10 of connector
CN17). Tester indicator should move when
signal is received. Replace PWB.
Dew condensation on light receiv-
ing unit. Check for water and rust. Signal should be received within
range specified in manual. Take moisture-proof measure for
lead wire outlet of light receiving
section.
Main cause Inspection method Normal value/condition Remedy
Caught in sliding section. Operate to see if louvers are
caught in place. Louvers should operate smoothly. Remove or correct catching sec-
tion.
Disconnected connector (CN7) on
PWB, Inspect connectors. Connectors or pins should not be
disconnected. Install correctly.
Contact of solder on PWB
(connector section on PWB) Check visually. There should not be solder contact. Correct contacting section.
Main cause Inspection method Normal value/condition Remedy
Grounding wires not connected
properly. Check grounding wire connections. Grounding wires should be con-
nected properly.
Connect grounding wires properly.
TV/radio is placed too close to out-
door unit. Check distance between TV/radio
and outdoor unit. If TV/radio is placed too close, it
may become affected by noise. Move TV/radio away from outdoor
unit.
Other than above. Check for radio wave interference.
Main cause Inspection method Normal value/condition Remedy
Malfunction caused by noise. Check for radio wave interference.
Main cause Inspection method Normal value/condition Remedy
Erroneous inter-unit connection. Check wiring between indoor and
outdoor units. Terminal board 1-N: 220-240 VAC,
50 Hz
Terminal board 2: serial signal Correct wiring.
Damaged IPM. Check IPM continuity. See [IPM check method] on page
3-10 Replace IPM.
Dried-up electrolytic capacitor. Check electrolytic capacitor. See [Inverter electrolytic capacitor
(C9,C10) check method] on page
3-9 Replace electrolytic capacitor.
Blown outdoor unit fuse. Check 20A fuse.
Check 15A fuse. Fuse should not be blown. Replace fuse/diode bridge.
Replace fuse.
Replace outdoor unit PWB assem-
bly.
Power supply voltage is too low. Measure power supply voltage dur-
ing startup. 230

10 VAC, 50 Hz Make sure that power supply volt-
age is 200 V or higher.
Compressor lock. Supply current and touch compres-
sor cover (sound absorbing mate-
rial) to check if operation starts. Compressor should start normally. Apply external impact to compres-
sor.
Replace compressor.

Temp. fuse of terminal is error

EEEPROM error

AC Over current error
See (Diagnosis Function and dis-
play mode) on page 3-13 Malfunction display section (0-0)
Compressor should start normally.

Replace terminal

Replace outdoor unit PWB

Replace outdoor unit PWB
Main cause Inspection method Normal value/condition Remedy