Test Procedures - Loads - Scotsman C2648 - SERVICE MANUAL 11-2010 Service Manual

C2648 Service Manual

Test Procedures - Loads

Liquid Line Solenoid
1. Test using the controller's indicator lights. Put the controller into test mode (depress Off for 3 seconds
then depress Clean for 3 seconds). At the end of the test cycle, the liquid line valve will be powered and
the Condenser Fan motor indicator light will be on. The liquid line valve should be open at that time. If it
is not, repeat the test but check the voltage to the liquid line valve coil, it must receive full voltage at the
liquid line lead connection at the end of the test. If there is voltage and the valve does not operate,
replace the valve coil. If there is no voltage, check the controller high voltage harness connection. The
liquid line solenoid lead is the top wire. Check voltage at the end of the test, when the Condenser Fan
indicator light is On. Note: high voltage power is supplied to the bottom pin from the contactor line. Refer
to the machine wiring diagram as needed.
2. Test using an ohmmeter. Disconnect electrical power. Unplug liquid line coil from harness. Measure
liquid line coil resistance. If open, replace the liquid line valve coil.
This light will be ON when the liquid line
solenoid has power.
November 2010
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