9-3. Instruction of troubleshooting
Start
w"Test Run operation" | If blinking of OPERATION |
means the operation | INDICATOR lamp cannot |
within 30 minutes after | be checked, it can be checked |
EMERGNCY OPERATION | with failure mode recall function. |
switch is pressed. |
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Indoor unit operates. 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.
OPERATION INDICATOR lamp on the indoor unit stays off.
Outdoor unit |
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operates in |
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only Test Run |
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operation. w |
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Check room |
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temperature |
| "How to check |
thermistor. |
| inverter/ |
Refer to |
| compressor". |
"Test point |
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diagram and |
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voltage". |
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Unit doesn't |
| Indoor unit | ||
operate |
| operates, when | ||
normal |
| EMERGENCY | ||
operation in |
| OPERATION | ||
COOL or |
| switch is pressed. | ||
HEAT mode. |
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Refer to |
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"Check of |
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R.V. coil". |
| remote controller |
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| and receiver |
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| P.C. board". |
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Indoor unit doesn't operate, when
EMERGENCY
OPERATION switch is pressed.
1.Check indoor / outdoor connecting wire. (Check if the power is supplied to the indoor unit.)
2.Refer to
PLASMA/WASH lamp
cause: Indoor unit
•Trouble of PLASMA DEODORIZNG power control or PLASMA AIR PURIFYING power control
Replace the indoor electronic control P.C. board.
As for outdoor unit MUZ type, refer to service manual OB372. As for outdoor unit MXZ type, refer to service manual OB377.
All lamps |
| Flash on and off | ||||
Flash on and off |
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at |
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intervals |
| intervals | Indoor unit | |||
Cause: |
| Cause: | • Trouble of | |||
Indoor unit |
| Indoor/ | room temp- | |||
• The horizontal |
| Outdoor unit | erature/ | |||
vane is not |
| • | indoor coil | |||
installed |
| or trouble | thermistor | |||
correctly. |
| of serial signal |
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Refer to |
| Refer to | Check room | |||
E "Check of |
| D "How to | temperature | |||
installation of |
| check of | thermistor | |||
the horizontal |
| and indoor | ||||
vane". |
| and serial | coil thermis- | |||
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| signal error | tor. | ||
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| outdoor unit | "Test point | ||
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| doesn't work)". | diagram and | ||
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| voltage". | |
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| POWER lamp |
| POWER lamp | POWER lamp | POWER lamp | ||||
of AREA lamp |
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Cause: |
| Cause: |
| Cause: | Cause: | Cause: | |||||||
Indoor unit | Cause: |
| Outdoor unit |
| Outdoor unit | Outdoor unit | Outdoor unit | ||||||
• Trouble of | Indoor unit |
| • Outdoor |
| • Trouble of | • Trouble of | • Other | ||||||
indoor fan | • Trouble of |
| power |
| thermistor | outdoor | abnormality | ||||||
motor | indoor unit |
| system |
| in outdoor | control |
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| abnormality |
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Refer to | Replace the |
| Refer to |
| Refer to | Replace the | Check | ||||||
A "Check of | indoor |
| "How to check |
| "Check of | inverter P.C. | "Flow chart of | ||||||
indoor fan | electronic |
| inverter/ |
| outdoor | board or | the detailed | ||||||
motor". | control |
| compressor". |
| thermistors". | the outdoor | outdoor unit | ||||||
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| electronic | failure mode | |||
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| control P.C. | recall function." | ||
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17
