Toshiba RAV-GP1101AT8-E Service Manual page 62

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