Dometic RM2852 User Manual download pdf (Page 10)

DESCRIPTION OF OPERATING MODES

AUTO MODE

When operating in the AUTO mode, the AUTO mode

indicator lamp (A) will illuminate.

The control system will automatically select between AC

and GAS operation with AC having priority over GAS. If

the control system is operating with AC energy and it

then becomes unavailable, the system will automatically

switch to GAS. As soon as AC becomes available again

the control will switch back to AC operation.

Gas operation (120 volts AC is not available). The control

system will activate the ignition system and will attempt

to light the burner for a period of approximately 45 sec-

onds. If unsuccessful, the CHECK indicator lamp (B) will

illuminate.

To restart an ignition attempt with the CHECK lamp illu-

minated or to clear (turn off) the CHECK lamp, press the

main power ON/OFF button to the OFF and then ON

position. The control system will attempt a new 45 sec-

ond ignition sequence.

If 120 volts AC becomes available while the CHECK in-

dicator lamp is on, the CHECK lamp will not turn off until

the main power ON/OFF button is pressed to the OFF

then ON position.

GAS MODE

When operating in the GAS mode, the AUTO mode

indicator lamp (A) will be off. This mode provides LP gas

operation only. The control system will activate the igni-

tion system and will attempt to light the burner for a pe-

riod of approximately 45 seconds. If unsuccessful, the

CHECK indicator lamp (B) will illuminate.

To restart GAS operation, press the main power ON/

OFF button (1) to the OFF and then ON position. The

control system will attempt a new 45 second ignition

sequence.

If the refrigerator has not been used for a long time or

the LP tanks have just been refilled, air may be trapped

in the supply lines. To purge the air from the lines may

require resetting the main power ON/OFF button (1) three

or four times. If repeated attempts fail to start the LP gas

operation, check to make sure that the LP gas supply

tanks are not empty and all manual shutoff valves in the

lines are open. If the problem is still not corrected, con-

tact a service center for assistance.

LIMP MODE OF OPERATION

This control system contains a feature where it will con-

tinue to operate the cooling system in event of a failure

of a major operating component.

If the control cannot read the temperature sensor and

control to the preset temperature, then the control will

run the cooling unit continuously at the energy source

available.

The refrigerator will continue to operate in this mode in-

definitely or until a new sensor is installed and the sys-

tem is reset.

Refrigerator control panel

CHECK

GAS

AUTO

OFF

AUTOMATIC REFRIGERATOR TEMPERATURE CONTROL

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Dometic RM2852 User Manual Page 10

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