Auto Mode - Dometic RM 3662 Installation And Operating Instructions Manual

'96 TIS
SDF
2 - WAY display panel.
D
B c
DESCRIPTION OF OPERATING
MODES
THERMOSTAT
The
thermostat on the refrigerator controls both the gas
and electric operation, thereby eliminating the necessity
of resetting each time a different energy source is em-
ployed.
After the initial start-up, the thermostat should be moved
from ' COLDEST' to the desired temperature setting,
usually about mid setting.

AUTO MODE

When operating in the AUTO mode, the AUTO mode
indicator lamp (D) will illuminate. The control system will
automatically select between AC and GAS operation
wlth AC having priority over GAS. Either the AC indicator
lamp (B) or the GAS indicator lamp (C) will illuminate
depending on the energy source selected by the control
system. If the control system is operating with AC energy
and it then becomes unavailable , the system will auto-
matically switch to GAS. As soon as AC becomes avail-
able again the control will switch back to AC regardless
of the status of GAS operation.
GAS MODE
When operating in the GAS mode the AUTO mode
indicator lamp (D) will be off and the GAS mode indicator
lamp (C) will be illuminated. 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
period of approximately 45 seconds. If unsuccessful, the
CHECK indicator lamp (E) will illuminate and the GAS
mode indicator lamp (C) will turn off.
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 tong 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,
contact a service center for assistance.
If the control is switched to AC or DC (3-way models
only) operation while the CHECK indicator lamp is on, it
will function properly, but the CHECK lndicator lamp will
not go off until the main power ON/OFF button is pressed
to the OFF then ON position.
46 141 236393
E
3 -WAY display panel.
A D
E
B C
DC.MODE (3-way models only)
When operating In the DC mode the DC mode indicator
tamp (A) will be illuminated. All other mode lamps will be
off. The DC mode overrides all other operating modes.
If one of the other operating modes is desired, the DC
selector button (2) must be pressed to turn OFF the DC
lamp (A).
IMPORTANT:
To
prevent the refrigerator from being left on and
draining the battery when the vehicle's engine Is not
running and charging the battery. It It recommended
that an automatk cut-out relay be Installed between
the battery and the refrigerator toggle switch so that
the refrigerator will not draw current when the lgni-
tion of the vehicle is switched off. Alternatively, a
suitable plug and receptacle should be installed In
the 12 Volt supply line, so that the refrigerator can
be disconnected from the supply, as necessary.
LIMP MODE OF OPERATION
This control system contains a feature where It will
continue to operate the cooling system in the event of a
failure of a major operating component. Two different
modes of operation can occur in this category.
If for some reason the display module becomes non
functional, the control system will revert to full automatic
operation selecting the best energy source available
with AC, DC (3-way only) and GAS priority. The temper-
ature of the refrigerator will be maintained at the MID
position within normal temperature tolerances. The pow-
er module will continually attempt to reestablish oper-
ation of the display module.
The second limp mode of operation will execute when a
failure of the temperature sensing device or associated
electronic circuitry occurs. If thls should occur, the con-
trol system will operate on the energy source selected
via the control panel. The cooling unit will run contin-
uously on the selected energy source. The refrigerator
will continue to operate in this mode Indefinitely or until
a new sensor is installed and the system is reset.
F