Floor Standing MFM DM16-01.01.25en
Service manual 44
10.1.2 LEDs for the indication of outdoor trouble (only for 48K-50K)
Their codes are listed in the following table:
LED2(green) LED3(yellow) LED4(red) Contents
On Off Off OK
Off On Off Standby
Off Off Flash Lack of phase
Off Flash Off Phase sequence error
Off Flash Flash
Communication malfunction between indoor unit
and outdoor unit
Off Off On Open- or short-circuit of T3 temperature sensor
Flash Off Off Open- or short-circuit of T4 temperature sensor
On Off On Temperature protection of compressor discharge
Flash Flash Off High pressure protection
Flash Off Flash Low pressure protection
Off Flash On Overload of current
Flash Flash On High temperature protection of condenser
Flash Flash
Flash Fan jump selection error
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