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COMFORT CONTROL CENTER SPECIAL CONTROL
FEATURES
A. Auto Fan: When AUTO FAN is selected, the fan speed
will be determined by the mode you are in.
1. Cool Mode:
In the COOL mode, which is the air conditioning mode,
the fan will automatically select the speed depending
upon the difference between the temperature SET-
POINT and the room temperature. When that differ-
ence is:
8° or more The fan will operate on HIGH
4° to 8° The fan will operate on MED
4° or below The fan will operate on LOW
2. Cool Mode (Heat Pump)
If your vehicle is equipped with a Duo-Therm Heat
Pump, the fan will automatically select the fan speed
depending upon the difference between the tempera-
ture SET-POINT and the room temperature. When
the difference is:
8° or more The fan will operate on HIGH
Less than 8° The fan operates on LOW
3. Heat Pump Mode
When HEAT PUMP mode is selected, the fan will start
running on the LOW speed.
4. Heat Strip Mode
When HEAT STRIP mode is selected, the fan will
start running on the LOW speed.
5. Fan Only Mode
In the FAN ONLY mode, the fan will start running on
the LOW speed.
B. Refrigerant Compressor Time Delay
A time delay of approximately two minutes occurs any
time the compressor is required to begin the cooling
or heat pump cycle.
C. POWER INTERRUPTION
In the event that power to the air conditioner or control
is interrupted, the system will restart with the same
settings you have previously set.
D. zONE CONTROL
The Duo-Therm Control Center will operate cooling
and heating appliances which your vehicle manu-
facturer has designed to heat or cool different areas
(ZONES) of your RV. The Comfort Control Center
will advise you if your vehicle has multiple ZONES,
by showing ZONE , 2 3 or 4 illuminated in the LCD
readout. In the event your vehicle has multiple zones
designed, you have the freedom of selecting the
MODE of operation for each zone independently. To
change from one zone to another, depress the ZONE
push-button. Each time you depress and release this
push-button, the indicator will change the zone data
displayed. The zone number flashing indicates zone
being programmed. The zone number will flash for
approximately 30 seconds unless another zone is se-
lected or programming has been completed. At this
time the number will stop flashing and the display light
will go out. When all zones have been programmed,
the zones in operation will be underlined. To program
each zone, simply repeat the programming steps
shown in the operation section of this manual.
Important:
The Comfort Control Center will
prevent
operating
FURNACE and HEAT PUMP at the same time.
E. OPT. AUTOMATIC GENERATOR START (AGS)
On vehicles equipped with an optional AGS kit the
vehicle generator will automatically start when any
zone calls for cooling/heating and will shut off when
all zones reach set point.
1. Put the power switch in the ON position.
2. Momentarily depress and release the ZONE push-
button until AGS indicator appears on the LCD.
3. Momentarily depress and release the MODE push-
button to select AGS status.
Important:
When
able, AGS must be switched to the off position.
SECTION 2
2.1 AC Voltage
This is an energized circuit. Shock can occur
if not tested properly. Testing is to be done
by a qualified service technician.
The unit is an 5 VAC, 60 Hz appliance. The proper op-
erating range is between 03.5 and 26.5 volts AC. The
voltage reading should be taken at the unit power sup-
ply leads. One test should be performed when the unit is
turned OFF and another with it running under load. If the
voltage is not within the proper operating range, it must be
corrected before trouble shooting of the unit can begin.
Check for proper AC volts at the connections at the units
electronic control box.
2.2 Breaker
The unit is to be protected by a time delay fuse or HACR
(heating, air conditioner, refrigerator) breaker. By taking
an amp reading at the unit AC voltage supply line, you can
determine if the breaker is tripping prematurely. Place a
clamp-on type amp meter around the black wire between
the unit and breaker. Turn ON the unit and record the amp
draw. If the breaker trips before the rated amperage, re-
place the breaker.
2.3 Unit Wiring
With the line circuit breaker turned off, check to see if the
air conditioner is wired correctly. Each air conditioner is
supplied with a wiring diagram. Check all connections for
clean/tight and proper location. Reference typical wiring
diagrams next page.
Note:
Be sure to use the wiring diagram on the appli
ance for the specific unit you are diagnosing.
3
FURNACE
and
COOL
shore
power
is
or
avail-
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