AES Refrigerator
GLOSSARY OF TERMS
A E
S
Automatic Energy Selector Refrigerators. First introduced in 1983, the 1st and 2nd generation
series will automatically select the available heat source for operation
(12OV
AC, 12V DC or LP gas)
by simply turning the refrigerator to the “ON” position. The 3rd generation series have the added
flexibility of being utilized in three (3) individual selector switches, the refrigerator can be operated
as a full AES, on 120V and LP gas only or gas operation only.
AUTOMATIC IGNITER/REIGNITER
-
An electronic 12V DC device that directly replaces the piezo
lighter, found on manually controlled models for several years. When 12V DC is supplied to the
igniter it produces a high voltage that is supplied through the electrode cable and electrode which
produces a spark at the burner to light the air/gas mixture. An added benefit of this system is that
12V
is supplied continuously to the igniter during the gas mode. If the flame should blow out, the
igniter will re-engage and relight the flame at the burner. An additional function of the igniter is that
it produces an increased DC voltage that ultimately opens the solenoid valve.
BURNER - A slotted metal tube located just below the flue tube on the cooling unit, an integral part
of the gas system. This is where the igniter spark occurs which produces LP gas flame at the burner
that produces the necessary heat to initiate the cooling process at the cooling unit. Both orifice and
burner should be cleaned periodically to maintain proper cooling capabilities of the refrigerator.
DELAY CYCLE - If refrigerator is wired to the installation according to Dometic’s specifications, every
time the ignition switch is turned to the “OFF” position, following
12V
cooling operation, a safety
delay cycle begins. For approximately 25 minutes the refrigerator will remain off and will not select
LP gas operation. This is to insure there will not be an open flame at the burner while the customer
refuels the R.V.. The 120V cooling mode is not affected by the delay cycle. Anytime the refrigerator
receives 120V at the power cord, the unit will operate on the AC mode. On the 3rd generation series
models this safety delay cycle has been incorporated into the controls to protect the 12V DC cooling
circuit as well. If battery voltage to the terminal block drops below
11V
DC when the refrigerator
is operating in the 12V DC mode, the controls will disengage the 12V heating element and go into
a delay cycle. As soon as battery voltage regains proper voltage (13.3V DC) the delay cycle will
discontinue and refrigerator will operate on
12V
DC cooling mode. If voltage does not regain itself
after approximately 25 minutes, the controls will select gas operation to insure proper cooling. This
delay cycle may be over-run (see Off/On Procedure, Item 24).
A-7-1
Manual Compliments of
Northwest RV Supply
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