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Outdoor
LED display
<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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Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[Outside air temp. sensor (TO) error]
[Suction temp. sensor (TS) error]
[Heat sink temp. sensor (TH) error]
[Miswiring of heat exchanger sensor (TE, TS)]
Correct connector.
Sensor error → Replace
Check outdoor P.C. board (MCC-1599).
Defect → Replace
Is CN602 connection normal?
Is resistance value of TO sensor normal?
YES
NO
Correct connector.
Sensor error → Replace
Check outdoor P.C. board (MCC-1599).
Defect → Replace
Is CN600 connection normal?
Is resistance value of TS sensor normal?
YES
NO
Check outdoor P.C. board (MCC-1599).
Defect → Replace
Check outdoor P.C. board (MCC-1599).
Defect → Replace
Correct connector.
Sensor error → Replace
Correct connector.
Sensor error → Replace
Correct sensor mounting.
Is mounting status of
TE and TS sensors normal?
Is CN600 connection normal?
Is resistance value of TS sensor normal?
Is CN601 connection normal?
Is resistance value of TE sensor normal?
YES
YES
YES
NO
NO
NO