Error code

Mitsubishi Electric Lossnay All models code M1

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Meaning

TAB1, TAB2, (TAB5): Connector (Power supply) C TAB3, TAB4: Connector (Reactor) C X13: Relay contact C X14: Relay contact C X15: Relay contact C CN5: Connector (Thermistor RA) C CN7: Connector (Motor for Bypass damper) S CN9: Connector (Fan motor) S CN10: Connector (Fan motor) L CN17: Connector (Fan speed 1/2/3/4) L CN18: Connector L CN118: Connector S

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Possible causes

N19: Connector N119: Connector N20: Unused N22: Connector (Thermistor OA) N26: Connector (Bypass, 0 - 10 V DC Fan speed control) N32: Connector (Remote control selection) A1: Address setting rotary switch (tens digit) A2: Address setting rotary switch (ones digit) ED1, LED2: Inspection indicator lamp ED3: Remote controller power supply indicator lamp ED4, LED6: Power supply indicator lamp YMBOL : Terminal block, : Connector on PCB

Solution

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