Wiring Diagram for Dometic Cruisair Marine SX12-R4 Relay
TURN OFF ALL POWER BEFORE BEGINNING YOUR INSTALLATION
Instructions
TURN ALL POWER OFF BEFORE STARTING INSTALLATION.
Route all SoftStart wires into the electrical box. Then crimp Connectors onto all SoftStart wires as indicated in drawing.
Step 1. Follow White Compressor wire FROM Compressor, THRU the Start Relay, and TO Run Capacitor “C” terminal. Disconnect from “C” terminal and connect it to Blue SoftStart wire. Tape connection with electrical tape.
Step 2. Connect Black SoftStart wire to the Run Capacitor terminal that the White Compressor wire was on.
Step 3. Connect Yellow SoftStart wire on an empty HERM terminal of Run Capacitor.
Step 4. Disconnect the Black Start Capacitor wire from the #1 terminal on the Start Relay. Seal wire end with tape and drop it.
Step 5. Follow Pink Compressor wire to Start Relay. Disconnect Pink wire from Start Relay and connect it to Brown SoftStart wire. Tape connection. Disconnect the second Pink wire from the #2 terminal on the Start Relay and go to Step 6.
Step 6. Connect Red SoftStart wire with Piggyback connector onto the #2 terminal. Connect the second Pink on the male side of the Piggyback connector of the Red SoftStart wire.
Secure all wires. Tape connections with electrical tape.
Turn Power and A/C Breaker on. Turn A/C to Auto Cool setting and set the thermostat to 55ºF (or as low as possible).
Look at SoftStart Marine RUN LED light (on left side). Green light should be “on”. Green light means the Compressor is running (there may be a full 3-minute “Test Mode” delay before Green light comes on). IF there is no Green light after 4 minutes, call SoftStart Tech Support for assistance.
After establishing Green light operation, re-install all A/C covers.
Turn A/C on, set near to outdoor temperature and run for 30 minutes. After 30 minutes, operate A/C normally.