Toshiba RAV-SP1104AT8-E Service Manual page 74

Check Outdoor
code LED display
[L29]
<Display 1> <Display 2>
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<Display 1> <Display 2>
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<Display 1> <Display 2>
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<Display 1> <Display 2>
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<Display 1> <Display 2>
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<Display 1> <Display 2>
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<Display 1> <Display 2>
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(Item without special mention Indicates part of outdoor unit.)
There is a possibility that it is one of the following errors.
Confirm LED on outdoor P .C. board to judge which error it is.
Communication error between MCU, Heat sing temp. sensor (TH) error,
EEPROM error, Unset model type, Heat sink overheat error, Gas leak detection,
4-way valve inverse error
[Communication error between MCU]
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1. Connection check between CN802 of MCC-1599 and CN504 of MCC-1597
and also connection check between CN505 of MCC-1597 and CN851 of
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MCC-1596.
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2. Check outdoor P .C. board (MCC-1596, MCC-1597, MCC-1599).
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Defect o Replace
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[Heat sink temp. sensor (TH) error] o Refer to [F13] column.
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[EEPROM error] o Refer to [F31] column.
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[Unset model type] o Refer to [L10] column.
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[Heat sink overheat error] o Refer to [P07] column.
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[Gas leak detection] o Refer to [P15] column.
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[4-way valve inverse error] o Refer to [P19] column.
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Check and troubleshooting
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