Lp Gas Mode Of Operation; Step By Step Trouble Shooting Guide Gas Mode - Norcold 600 Repair Manual

LP Gas Mode of
Operation
Answer the questions before calling
Norcold's Technical Service Number.
1. Is the refrigerator installed and
vented in accordance with the
Ventilation instructions speci-
fied in Section 2?
2. Is the refrigerator being operated
in a comfortably level position?
3. Do you have 11 inches water
column pressure (LP pressure)
to the LP Pressure tap point, lo-
cated at the rear of the refrigera-
tor, at the 12V solenoid valve?
4. Is the combustion chamber
which houses the spiral baffle
clean and free from obstruction?
5. Is the spiral baffle in place?
6. Is the Burner Orifice clean and
the correct size?
7. Have you checked all electri-
cal connections?
8. Is 12 Volts DC power being sup-
plied to terminal (-J3) (+ J4)?
9. Is 3 amp fuse good? (Located un-
der Power Supply board cover)
10. Is STORAGE switch, located
on the Eyebrow panel, in the
NORMAL (ON) position
HIGH HUMIDITY (ON) position?
11. Is the modular connector on
the wire harness connected at
the Power Supply board and
the Eyebrow board?
12. Is Mode Selector set to GAS
mode?
Step By Step Trouble
Shooting Guide Gas Mode
Note that gas operation can be
obtained by a) setting the Mode
Selector to GAS, or b) setting the
Mode Selector to AUTO with 120
volts AC disabled (See discussion
on gas operation on page 11-4).
The following trouble shooting
steps specify setting the Mode Se-
lector to GAS. Once the gas op-
eration is established in this mode,
the Mode Selector should be
switched to AUTO and 120 volts
AC disconnected to ensure proper
gas operation in the AUTO mode.
1. With a volt-ohm-meter set to measure 12 volts DC check the input sup-
ply to the Power Supply terminals J3 and J4 as shown in Figure 11.34. If
you do not have 12 volts DC repair the source.
Figure 11.34
2. Remove all the wires that are connected to the terminals on the right
side of the Power Supply.
WARNING
DC SUPPLY. THE DC SUPPLY IS CLOSE TO THE PROPANE GAS WHICH
SUPPLIES THE REFRIGERATOR. ARCING CAN EXIST WHEN DISCON-
NECTING THE DC SUPPLY WHICH CAN IGNITE A LEAK IN THE PROPANE
SUPPLY LINE. RESULTS CAN BE SEVERE PERSONAL INJURY OR DEATH.
3. Remove the Power Supply cover to gain access to the power supply.
4. Reconnect the DC supply to terminals J3 and J4+ on the power supply.
5. With the volt-ohm-meter set to measure + 12 volts DC, check for 12
or
volts across the fuse as shown by Figure 11.35. If you do not have 12
volts, replace the 3 amp fuse.
AC and DC power connected
but not shown
Figure 11.35
WARNING
NEVER OVERFUSE A CIRCUIT. REPLACE BLOWN FUSE WITH EXACT RE-
PLACEMENT INDICATED BY NORCOLD. OVERFUSING OF A CIRCUIT
CAN RESULT IN A FIRE.
6. Check that the Humidity/Storage switch (Figure 11.20) (2 door models
only) is set to NORMAL or HIGH HUMIDITY.
12 Volt DC Supply Check
USE EXTREME CAUTION WHEN RE-
PLACING ANY DC ELECTRICAL COM-
PONENTS.
TAKEN WHEN DISCONNECTING THE
3 Amp Fuse Check
1
CAUTION MUST BE