58 Phase Sensor Error MP4000

Description 

Phase Sensor Error 

• Occurs during pretrip (PTI) or function test only. 
• During Phase Sensor Test, while direction is reversed, the condenser fan and compressor is tested.
•  If the current consumption of the condenser fan is below 0,5A on each phase. 
• If the current consumption of the compressor is below 2,0A on each phase. 
• Indicates: 
• Defective phase relay. 
• Defective power module. 

Corrective Action 

• Start a Manual Function Test. With reverse phase direction selected, check the condenser fan runs reversed direction and the compressor is activated and makes loud noise. Allow only for short time activation max. 5 sec.