Fuse Replacement; Remove The Refrigerator; Reinstall The Refrigerator - Norcold N620 Service Manual

- If the cooling problem does not occur when operating on
all energy sources, the problem is not the cooling unit.
- Use the "Troubleshooting" section of this manual to
determine the cause of the problem.

Fuse Replacement

The electrical circuits of this refrigerator have fuses to protect
them from an overload. If the fault codes show that a fuse is
unserviceable, replace it as follows.
WARNING:
Do not operate the refrigerator without
the power board cover on the refrigerator. To prevent a
circuit overload and a possible electrical fire, use only
these fuses:
DC control circuit - 3 amp (purple) blade type automotive
fuse
DC heater circuit - 30 amp (green) blade type automotive
fuse
AC circuit - 5 amp glass cartridge fuse
1. 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 at
the rear of the refrigerator.
4. Remove the DC power supply wires from the power
board.
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) of
the correct type and size.
9. Reverse this procedure and assemble the power board
cover and all wiring.
NOTE: Do not use longer screws. Longer screws can
damage the wiring harness.

Remove the Refrigerator

CAUTION:
The rear of the refrigerator has sharp
edges and corners. To prevent cuts or abrasions
when working on the refrigerator, be careful and wear
cut 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 the
gas supply line connections.
2. Open the lower intake vent and remove the gas supply line
from the bulkhead fitting of the refrigerator.
3. Remove the AC power cord from the receptacle.
4. Remove the DC wiring from the refrigerator:
- Put a mark on the DC wires so you can put them back in
the correct location.
- Remove the DC fuse or remove the DC wiring from the
battery or the converter.
- Remove the DC wires from the refrigerator.
5. Remove the plastic plugs from the mounting flanges of the
refrigerator.
6. Remove the screws which fasten the refrigerator to the
wall.
7. Remove the refrigerator from the opening.

Reinstall the Refrigerator

WARNING:
Make sure the combustion seal is not
broken, is completely around the refrigerator mounting
flanges, and is between the mounting flanges and the
wall of the enclosure. If the combustion seal is not
complete, exhaust fumes can be present in the living
area of the vehicle. The breathing of exhaust fumes
can 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 the
wall.
3. Put the plastic plugs into the mounting flanges of the
refrigerator.
WARNING:
To avoid possible propane gas leaks,
always use two wrenches to loosen and tighten the
gas supply line connections.
5. Attach the gas supply line to the bulkhead fitting of the
refrigerator.
6. Open the valve at the propane gas tank(s).
WARNING:
Do not allow the leak checking solution to
touch the electrical components. Many liquids are
electrically conductive and can cause electrical shorts
and 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 battery
or the converter.
- Connect the DC wires from the refrigerator.
9. Connect the AC power cord to the receptacle.
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