SERVICE MANUAL29www.norcold.comWiring DiagramFig. 17 - Wiring DiagramDescriptionPB Power BoardDB Display BoardCW Cold Weather KitA AC HeatersB LightC ThermistorD Gas ValveE Divider HeaterF Perimeter HeaterG Fresh Food BlowerH Temperature MonitorControlI External FansJ * Ice Maker Water LineHeaterK * Water Valve HeaterL * Dispenser Water LineHeaterM * Dispenser Water ValveHeaterN * Water ValveO * Dispenser Light P.C.B.P * Dispenser SwitchQ Temperature SwitchR * Temperature SwitchS Divider Heater HousingT Door ContactsU Flapper HeaterV Flapper HousingW Door SwitchX IgniterY Freezer BlowerZ Thermocouple1 Fused Continuous 12VDC2 Switched 12 VDC3 Communications4 Display Ground5 Auxiliary Ground6 Auxiliary +12 VDC7 Divider +12 VDC8 Gas Valve +12 VDC9 Internal Fans Ground10 Internal Fans +12 VDC11 Cooling Unit Heater12 Temperature SwitchF1 5 Amp DC fuseF2 8 Amp AC fuseF3 3 Amp DC fuse* OptionalTEMPON-OFF MODEMICROVreg12345P1812VDCGNDLIMIT_OUTLIMIT_INAC_HT_HI_2AC_HT_HIAC_HT_LOAC_HT_LO_2L1L24 12356125 346789101 2K2K5K3K1K4-+P3---+++++P2P1+U1K2 K5 K4 K3K1GN/VEWH/BCBK/NRWH/BCRD/RGRD-BU/RG-BLYL/JNOR/ORRD/RGRD-BU/RG-BLBK-YL/NR-JNOR/ORP3VT/VT YL/JN312 123A DE FGHIJ K L M NOPQRSTU VWWX65432176 5432 178PBB1212+-RD-YL/RG-JNWH/BCBK/NRBU/BLRD-BU/RG-BLRD-YL/RG-JNBK/NRBU/BLWH/BCYL/JNRD/RGRD/RGBK/NRBK/NRWH/BCBK/NRWH/BCBR/BRBR/BR2 1K6P4K612121212+-+-Y991010RD/RGBK/NRBK/NRRD/RG RD/RGT1DB1212BR/BR BR/BRBK/NRBK/NR+12V IN+12V OUTGND+-YL/JNRD/RGZBU/BLGN/VERD/RGBU/BL+C1 122BK/NRBK/NRBK/NRBK/NR11 12BK-YL/NR-JNRD-BU/RG-BL-RD/RG BK/NRNOR000186APBABCDEFGHIJ*K*L*M*N*O*P*QR*DBSTUVXYZ123456789101112F1F2F3123456791012VDC GROUNDcw+12VDC120VAC12VDC GROUND+12VDCWW