Title: Brukermanual for Refra varmepumpe.pdf
Make sure that the compressors are rotating in the right direction. Reverse direction of rotation of the motor compressor is caused by improper connection of the power cable. If the cause actuation of voltage control is a bad connection phase, disconnect the unit from the power supply and swap the two wires, power cables, the relevant phases. Then turn on the power if the problem persists, then the relay is turned on by the end of exposure time.Maintenance and inspection automation protection under high pressure Switching of the high pressure relay occurs at increase of pressure above allowable. This turns off the compressor. Switching of the low pressure relay occurs at reduction of pressure below allowable. This also turns off the compressor.