Modes Of Operation; Gas Mode; Ac Mode; Lighting Instructions - Norcold 2118 Manual De Servicio

Modes of Operation

Gas Mode

In AUTO GAS mode and MANUAL GAS mode, the controls ener-
gize the solenoid coil to open the gas valve. Spring pressure closes
the valve when the controls stop the flow of current to the solenoid
coil.
The propane gas burner will cycle in response to the fin tempera-
ture to maintain cabinet temperature.
The controls use an electronic sparker to ignite the propane gas at
the burner.

AC Mode

AUTO AC or MANUAL AC mode operation requires 108 to 132
volts AC. Voltage is to be supplied through a 2 pole, 3-wire, 20
Amp grounding type receptacle.
Two (2) 120 volt AC heaters generate the heat load required for
AUTO AC and Manual AC operation. Each heater is rated for 300
watts @ 120 volts AC. Each heater has a resistance value of 45 to
51 Ohms at ambient temperature. To replace heaters, the refrig-
erator must be removed from the enclosure.
Burn hazard! Allow canister and heaters
WARNING
!
to cool before attempting to remove and
ATTENTION
replace.
The AC electric heaters will cycle in response to the fin tempera-
ture to maintain the cabinet temperature.

Lighting Instructions

Before ignition or start up of the refrigerator:
■ Be sure the air flow in the lower intake vent, through the refrig-
erator coils and condenser, and out the upper exhaust vent is
not blocked or decreased.
■ Be sure there are no combustible materials in or around the
refrigerator.
1. Open the valve at the propane gas storage tank.
2. Push and release the ON / OFF button (
3. Push and hold the TEMPERATURE SET button until tem-
perature setting "9" appears.
4. Push the Mode button until the MANUAL GAS mode indica-
tor comes on.
2118, 2118IM, 2118IMD Series

Test the Gas Safety Valve

To test the gas safety valve:
1. Open the lower intake vent.
2. Remove both white wires from the solenoid of the gas safety
valve on the rear of the refrigerator.
3. Insert volt ohm meter leads into the white wires and set the
meter to read DC volts.
4. Power ON the refrigerator; select MANUAL GAS mode.
5. Verify that the meter reads approximately 12 volts DC and that
the igniter sparks at the burner.
6. After approximately 30 seconds, the voltage measured at the
white wires will be 0 volts DC and the sparking at the burner will
cease. This means that the gas valve safety circuit is operating
correctly. The appropriate error code will appear on the optical
display.
7. Reconnect the white wires to the gas valve solenoid. It does
not matter which wire is attached to which terminal.
8. Close the lower intake vent.
9. Power OFF the refrigerator.

Diagnostic Pre checks

Prior to performing the diagnostic steps called out in the follow-
ing 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 108 VAC
and 132 VAC.
■ 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 VDC and 15.4
VDC.
■ Propane gas is available to the refrigerator and is regulated
between 10.5 inches and 11.5 inches w.c. (Inches of Water
).
Column).
■ The airflow through the intake and exhaust vents is not blocked
and the ventilation baffles are constructed correctly.
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