Norcold N620 Service Manual

Contents

Norcold N620 Service Manual Manual pdf 25 page image

Service Manual 25Fuse ReplacementThe electrical circuits of this refrigerator have fuses to protectthem from an overload. If the fault codes show that a fuse isunserviceable, replace it as follows.WARNING: Do not operate the refrigerator withoutthe power board cover on the refrigerator. To prevent acircuit overload and a possible electrical fire, use onlythese fuses:DC control circuit - 3 amp (purple) blade type automotivefuseDC heater circuit - 30 amp (green) blade type automotivefuseAC circuit - 5 amp glass cartridge fuse1. Push the ON/OFF button to shut down the refrigerator.2. Remove the AC power cord from the receptacle.3. Remove the AC power cord from the power board that is atthe rear of the refrigerator.4. Remove the DC power supply wires from the powerboard.5. Remove the ignition sense wire from the power board.6. Remove the gas valve wires from the power board.7. Remove the mounting screws and the power board cover.8. Replace the unserviceable fuse(s) with the new fuse(s) ofthe correct type and size.9. Reverse this procedure and assemble the power boardcover and all wiring.NOTE: Do not use longer screws. Longer screws candamage the wiring harness.Remove the RefrigeratorCAUTION: The rear of the refrigerator has sharpedges and corners. To prevent cuts or abrasionswhen working on the refrigerator, be careful and wearcut resistant gloves.1. Close the valve at the propane gas tank(s).WARNING: To avoid possible propane gas leaks,always use two wrenches to loosen and tighten thegas supply line connections.2. Open the lower intake vent and remove the gas supply linefrom the bulkhead fitting of the refrigerator.3. Remove the AC power cord from the receptacle.- If the cooling problem does not occur when operating onall energy sources, the problem is not the cooling unit.- Use the “Troubleshooting” section of this manual todetermine the cause of the problem.Reinstall the RefrigeratorWARNING: Make sure the combustion seal is notbroken, is completely around the refrigerator mountingflanges, and is between the mounting flanges and thewall of the enclosure. If the combustion seal is notcomplete, exhaust fumes can be present in the livingarea of the vehicle. The breathing of exhaust fumescan cause dizziness, nausea, and in extreme cases,death.1. Push the refrigerator completely into the enclosure.2. Put the screws though the mounting flanges and into thewall.3. Put the plastic plugs into the mounting flanges of therefrigerator.WARNING: To avoid possible propane gas leaks,always use two wrenches to loosen and tighten thegas supply line connections.5. Attach the gas supply line to the bulkhead fitting of therefrigerator.6. Open the valve at the propane gas tank(s).WARNING: Do not allow the leak checking solution totouch the electrical components. Many liquids areelectrically conductive and can cause electrical shortsand in some cases, fire.7. Examine the gas supply line for leaks.8. Connect the DC wiring to the refrigerator:- Install the DC fuse or connect the DC wiring to the batteryor the converter.- Connect the DC wires from the refrigerator.9. Connect the AC power cord to the receptacle.4. Remove the DC wiring from the refrigerator:- Put a mark on the DC wires so you can put them back inthe correct location.- Remove the DC fuse or remove the DC wiring from thebattery or the converter.- Remove the DC wires from the refrigerator.5. Remove the plastic plugs from the mounting flanges of therefrigerator.6. Remove the screws which fasten the refrigerator to thewall.7. Remove the refrigerator from the opening.