9-3. INSTRUCTION OF TROUBLESHOOTING
Start
Indoor unit oper- ates.
Outdoor unit doesn't operate.
Indoor unit operates. Outdoor unit doesn't operate normally.
Indoor unit doesn't receive the signal from remote controller.
OPERATION INDICATOR lamp on the indoor unit is flashing on and off.
Outdoor unit |
| Outdoor |
| Unit doesn't |
| Indoor unit |
| Indoor unit | |||||
operates only |
| unit doesn't |
| operate normal |
| operates, when |
| doesn't operate, | |||||
in Test Run |
| operate even |
| operation in |
| EMERGENCY |
| when EMERGEN- | |||||
operation. |
| in Test Run |
| COOL or HEAT |
| OPERATION |
| CY OPERATION | |||||
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| operation. |
| mode. |
| switch is pressed. |
| switch is pressed. | ||||
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If blinking of OPERATION INDI- CATOR lamp cannot be checked, it can be checked with failure mode recall function.
"Test Run operation" means the operation within 30 minutes after
EMERGENCY OPERATION switch is pressed.
Check room temperature thermistor.
Refer to
Refer to "How |
| Refer to |
| Refer to |
to check |
| "Check of R.V. |
| "Check of remote |
inverter/ |
| coil". |
| controller and |
compressor". |
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| receiver P.C. |
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| board". |
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1.Check indoor / out- door connecting wire. (Check if the power is supplied to the indoor unit.)
2.Refer to 
Refer to outdoor unit service manual.
Left lamp | Left lamp |
| Left lamp | Left lamp |
| Left lamp | Left lamp |
| Left lamp | Left lamp | |||
Flash on and |
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off at | Cause: |
| Cause: | Cause: |
| Cause: | Cause: |
| Cause: | Cause: | |||
ond intervals | Indoor unit |
| Indoor unit | Indoor unit |
| Outdoor unit | Outdoor unit |
| Outdoor unit | Outdoor unit | |||
Cause: | • Trouble of |
| • Trouble of | • Trouble |
| • Outdoor | • Trouble of |
| • Trouble of | • Other ab- | |||
Indoor/ Out- | room tem- |
| indoor fan | of indoor |
| power | thermistor in |
| outdoor con- | normality | |||
door unit | perature / |
| motor | unit control |
| system | outdoor unit |
| trol system |
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• Miswiring or | indoor coil |
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| system |
| abnormality |
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trouble of | thermistor |
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serial signal |
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Refer to | Check room |
| Refer to |
| Replace the |
| Refer to "How |
| Refer to |
| Replace the | Check "Flow | |
"How to | temperature |
| "Check of |
| indoor elec- |
| to check |
| "Check of |
| inverter P.C. | chart of the | |
check miswir- | thermistor |
| indoor fan |
| tronic control |
| inverter/ com- |
| outdoor |
| board or the | detailed | |
ing and serial | and indoor |
| motor". |
| P.C. board. |
| pressor". |
| thermistors". |
| outdoor elec- | outdoor unit | |
signal error". | coil thermis- |
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| tronic control | failure mode |
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| P.C. board. | recall func- |
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| tion." | |
| point diagram |
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| and voltage". |
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