Thetford Norcold 9183 - Manual (Page 7)

ith the 3 screws.
Refrigerator Controls and Operating Instructions
A 12 VDC supply is required to maintain the refrigerator’s operating control functions. The refrigerator receives its DC
power from the vehicle’s 12 volt system; either an auxiliary battery, a converter, or the engine battery. The 12 VDC system
supplies power to the refrigerator and to other DC components in the vehicle.
The control panel (between the freezer and fresh food compartments), conveniently locates all refrigerator
functionality. The AC, LP GAS, Battery, and AUTO LED’s (A) light indicating the operating mode.
ON/OFF (E) turns the refrigerator On or Off. If the refrigerator is Off, press this to turn it On and set the mode to
AUTO. If the unit is On, press this for 2 seconds to turn the refrigerator Off.
Press and hold MODE (C) to cycle through the choices; one AUTO and three manual modes (AC, LP GAS, or
BATTERY-3 way models only). The refrigerator does not switch to the new mode until you release MODE.
TEMP SET (thermostat) (D) sets the refrigerator and freezer temperatures in both gas and electric operation.
Press and hold TEMP SET to select the temperature. The temperature settings are LEDs (B). The lighted LED
indicates the temperature, with COLD on the left and COLDEST on the right. The temperature LED turns off after
10 seconds. Quickly press and release TEMP SET to display the temperature setting.
Auto Mode
When AUTO mode is selected, the control automatically selects the energy source using this scheme:
•
When 120 VAC is available, the AUTO and AC LEDs light, meaning the refrigerator is operating on AC. After
10 seconds, the AC LED turns off and only the AUTO LED stays lit. Press and quickly release MODE to display
the operating mode.
•
If 120 VAC is not available, the refrigerator switches to gas operation. The AUTO and LP GAS LEDs light. After
10 seconds, the LP GAS LED turns off and only the AUTO LED stays lit. Press and quickly release MODE to
display the operating mode.
•
If 120 VAC or LP gas is not available, the refrigerator switches to DC (3-Way models only). The AUTO and
BATTERY LEDs light. After 10 seconds, the BATTERY LED turns off and only the AUTO LED stays lit. Press
and quickly release MODE to display the operating mode. DC operation is not as efficient as LP Gas or AC
operation. DC electric should not be used to initially cool the refrigerator. Only use DC when the other
modes are unavailable (for example; while in transit).
During operation in AUTO mode, if a higher priority energy source becomes available, the controls stop using
the current energy source and switch to the higher priority energy source. If AC becomes available while the
refrigerator is in AUTO LP GAS mode, the refrigerator switches to AUTO AC operation.
If an operating mode is not functional, its LED flashes and the refrigerator tries to operate in a lower energy priority
source. If a lower energy priority source is not available, the LED continues to flash, and the refrigerator stops operating
until the energy source is corrected. See Diagnostics for corrective actions.
A B C D E
Figure 6
Operating Controls
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