Test The Gas Safety Valve; Diagnostic Pre Checks; Troubleshooting; Diagnostic Procedures - Norcold N180.3 Manual De Servicio

Lighting Instructions, cont'd.

Test the Gas Safety Valve

The gas safety valve is built into the control panel. As long as a
flame is present, the valve is open and allows propane gas to flow
into the burner. Any loss of flame (empty propane gas tank, blow
out, etc.) closes the valve and stops the flow of propane gas.
While operating on propane gas, test the gas safety valve with an
established flame.
Push and turn the gas control to the OFF (
flame is extinguished, you should hear a sharp "click" sound within
90 seconds.
The gas safety valve should close with a sharp
NOTICE
"click" sound.
1. Push and turn the gas control to the HI position.
2. Without pushing in the gas control, push the piezo igniter sev-
eral times rapidly in succession.
3. The burner flame should not ignite. This means that the gas
safety valve is operating correctly.

Diagnostic Pre Checks

Prior to performing the diagnostic steps called out in the following
pages; first do these important diagnostic pre-checks. In most
cases doing so, in and of itself, will remedy the problem at hand.
Make sure:
■ Door is closed and sealing correctly.
■ Unit vents are not blocked.
■ Ambient temperature is not unusually high (more than 110° F. /
43° C.)
■ Verify control panel works properly. The refrigerator is plugged
into a known working AC outlet with a voltage between 108VAC
and 132VAC.
■ Extension cords are not being used to supply AC power to the
refrigerator.
■ The refrigerator is connected to a known working DC power
supply and/or battery supplying between 10.5 and 15.4VDC.
■ Propane gas is available to the refrigerator and is regulated
between 10.5 and 11.5"WC (Inches of Water Column).
■ The airflow through the intake and exhaust vents is not blocked
and the ventilation baffles are constructed correctly.
If the unit does not operate after these pre checks, perform
diagnostics outlined in the "Troubleshooting" section of this manual.
N180.3

Troubleshooting

Examine the cooling unit for leaks.
) position. After the

Diagnostic Procedures

Determine if the cooling problem occurs while the refrigerator is set
to propane gas, AC electric, and DC electric to see if the selected
energy source is operating correctly:
1. Select an energy source. Within 20 minutes of starting the
2. The outside of the insulation sleeve should be warm to the
3. Now verify the unit is cooling correctly. Within one (1) hour after
4. If the cooling problem does not occur on any of the energy

Troubleshooting Chart

Description
Not Cooling On AC
Not Cooling On DC
Burner Ignites,
But Flame Diminishes
12
If you think that the cooling system has
WARNING
!
a leak, do not operate the refrigerator.
ATTENTION
Replace the cooling unit before operating
the refrigerator. If you smell ammonia,
the cooling unit has a leak and must be
replaced. If you see a yellow powder
or residue anywhere at the rear of the
refrigerator or in the enclosure, the cooling
unit has a leak and must be replaced.
refrigerator, touch the outside of the insulation sleeve.
Touch only the outside of the insulation sleeve.
CAUTION
!
During normal operation, some tubes of the cooling
unit are hot. Do not touch any tubes of the cooling
unit.
touch:
■ If the outside of the insulation sleeve is not warm, the se-
lected energy source may not be operating correctly. Refer
to Troubleshooting Chart and perform the appropriate test.
■ If the outside of the insulation sleeve is warm, go to Step 3.
starting up the refrigerator, touch the fins on the inside of the
fresh food compartment:
■ If fins should feel cold to the touch, go back to Step 1 and
select another energy source. Continue until you've tested
all energy sources.
■ After two (2) hours, If the fins do not feel cold to the touch on
any of the energy sources, the cooling unit is not operating
correctly.
sources, the problem is not the cooling unit. Use the "Trouble-
shooting Chart" to determine the cause of the problem.
Action to Take
Perform Troubleshooting Test A
Perform Troubleshooting Test B
Perform Troubleshooting Test C
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