Starting device with HST
Connect a voltmeter between terminals 10 and 13 on the start- ing device. If no voltage can be measured, either the mains cable or the socket is defective.
Connect a voltmeter between terminals 10 and 14 on the start- ing device, It no voltage can be measured, a defective ther- mostat or thermostat wiring is indicated.
Dismount the red and brown wires on the thermostat and short- circuit them. If the compressor runs now, the thermostat is detective, It the compressor does not run, a break in the ther- mostat wiring is indicated.
If there is voltage between terminals 10 and 14 on the starting device, a defect in the starting device, starting condenser, compressor or refrigerating system is indicated.
1.Starting condenser
2.Run winding
3.Start winding
4.Winding protector
1.5.
Separate the starting device from the compressor and use an ohmmeter to test the main and start winding of the com- pressor.
Connect the ohmmeter between “Run” and “joint” to deter- mine the resistance of the main winding. And between “Start’ and “Joint” to determine the resistance of the start winding. NB: Measurements must be made when the compressor is cold.
If the measurements indicate a damaged winding, replace- ment of the compressor is necessary.
If the measurements indicate that the windings are not defec- tive, a new starting device should be installed. If the compres- sor still does not start, check the refrigerating system and compressor for possible blockage.
Compressor Connecting
Pins Location
Danfoss Compressors
Za nussi Compressors
Unidad Hermética Compressors
11.
