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Error code

live-power-lamp-continuous-blink Indoor/outdoor serial communication or miswiring fault

Fault

Mitsubishi Electric · LN

How it shows on the unit 1 blink every 0.5 seconds, repeating continuously (POWER lamp live troubleshooting table)

Applies to 92 models
MSZ-LN18VGW-E1, MSZ-LN18VGV-E1, MSZ-LN18VGB-E1, MSZ-LN18VGR-E1, MSZ-LN18VG2W-E1, MSZ-LN18VG2W-EN1, MSZ-LN18VG2W-ET1, MSZ-LN18VG2V-E1, MSZ-LN18VG2V-EN1, MSZ-LN18VG2V-ET1, MSZ-LN18VG2B-E1, MSZ-LN18VG2B-EN1, MSZ-LN18VG2B-ET1, MSZ-LN18VG2R-E1, MSZ-LN18VG2R-EN1, MSZ-LN18VG2R-ET1, MSZ-LN25VGW-E1, MSZ-LN25VGW-ER1, MSZ-LN25VGV-E1, MSZ-LN25VGV-ER1, MSZ-LN25VGB-E1, MSZ-LN25VGB-ER1, MSZ-LN25VGR-E1, MSZ-LN25VGR-ER1, MSZ-LN25VG2W-E1, MSZ-LN25VG2W-EN1, MSZ-LN25VG2W-ET1, MSZ-LN25VG2V-E1, MSZ-LN25VG2V-EN1, MSZ-LN25VG2V-ET1, MSZ-LN25VG2B-E1, MSZ-LN25VG2B-EN1, MSZ-LN25VG2B-ET1, MSZ-LN25VG2R-E1, MSZ-LN25VG2R-EN1, MSZ-LN25VG2R-ET1, MSZ-LN35VGW-E1, MSZ-LN35VGW-ER1, MSZ-LN35VGV-E1, MSZ-LN35VGV-ER1, MSZ-LN35VGB-E1, MSZ-LN35VGB-ER1, MSZ-LN35VGR-E1, MSZ-LN35VGR-ER1, MSZ-LN35VG2W-E1, MSZ-LN35VG2W-EN1, MSZ-LN35VG2W-ET1, MSZ-LN35VG2V-E1, MSZ-LN35VG2V-EN1, MSZ-LN35VG2V-ET1, MSZ-LN35VG2B-E1, MSZ-LN35VG2B-EN1, MSZ-LN35VG2B-ET1, MSZ-LN35VG2R-E1, MSZ-LN35VG2R-EN1, MSZ-LN35VG2R-ET1, MSZ-LN50VGW-E1, MSZ-LN50VGW-ER1, MSZ-LN50VGV-E1, MSZ-LN50VGV-ER1, MSZ-LN50VGB-E1, MSZ-LN50VGB-ER1, MSZ-LN50VGR-E1, MSZ-LN50VGR-ER1, MSZ-LN50VG2W-E1, MSZ-LN50VG2W-EN1, MSZ-LN50VG2W-ET1, MSZ-LN50VG2V-E1, MSZ-LN50VG2V-EN1, MSZ-LN50VG2V-ET1, MSZ-LN50VG2B-E1, MSZ-LN50VG2B-EN1, MSZ-LN50VG2B-ET1, MSZ-LN50VG2R-E1, MSZ-LN50VG2R-EN1, MSZ-LN50VG2R-ET1, MSZ-LN60VGW-E1, MSZ-LN60VGW-ER1, MSZ-LN60VGV-E1, MSZ-LN60VGV-ER1, MSZ-LN60VGB-E1, MSZ-LN60VGB-ER1, MSZ-LN60VGR-E1, MSZ-LN60VGR-ER1, MSZ-LN60VG2W-E1, MSZ-LN60VG2W-ET1, MSZ-LN60VG2V-E1, MSZ-LN60VG2V-ET1, MSZ-LN60VG2B-E1, MSZ-LN60VG2B-ET1, MSZ-LN60VG2R-E1, MSZ-LN60VG2R-ET1

What this means

The indoor unit does not receive the outdoor-unit serial signal for 6 minutes; incorrect indoor/outdoor wiring or incompatible standby-power history may be involved.

When to call a technician

This fault involves refrigerant, pressure, or electrical work that must be handled by a certified technician under EU F-gas rules. Do not attempt to open the refrigerant circuit, access mains wiring, or adjust pressure components yourself. Contact a qualified installer or servicer for this one.

See the Mitsubishi Electric manual (hosted by an authorized distributor)Hosted by an authorized distributor rather than by the manufacturer. We link to manuals, we never host them.

Other LN codes

See all 23 LN codes

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