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5. If your vehicle contains more than one ZONE, depress
the ZONE push-button to select ZONE 2, and repeat
procedures from Step . Repeat entire procedure for
each additional zone.
C. Heat Pump Operation
. Momentarily depress and release the MODE push-
button until the HEAT PUMP indicator on the LCD is
illuminated.
2. If you have not previously set your fan speed, you
may do so by depressing and releasing the FAN
push-button to select the desired fan speed.
3. Depress and release the UP push-button to increase
the temperature or the DOWN push-button to de-
crease the desired temperature. The final selected
SET-POINT will be displayed in the LCD area of the
Comfort Control Center.
4. After a delay of approximately 2 minutes the heat
pump's compressor will come on and the heating pro-
cess will begin. Once the room temperature reaches
the selected SET-POINT, the compressor will cycle
off. Once the Comfort Control Center senses the
need for heating, the compressor will restart in ap-
proximately two minutes. At this point, the fan will ei-
ther:
A. Operate in the single selected fan speed or,
B. Cycle OFF and ON with the compressor if the
AUTO fan speed has been selected.
5. If your vehicle contains more than one ZONE, de-
press the ZONE push-button to select ZONE 2, and
repeat procedures from Step above. Repeat entire
procedure for each additional zone.
Special Features built into the Heat Pump Comfort
Control System
Aux. Heat
When in the HEAT PUMP mode, if the outside ambient
temperature is measured to be below 32° F. (+/-2) and
the vehicle is equipped with a furnace connected to the
Comfort Control Center, the control will automatically se-
lect the FURNACE operation and the HEAT PUMP will
shut down. When this happens, the AUX HEAT and the
HEAT PUMP indicators on the LCD will illuminate. Once
the outside ambient temperature is measured above 38°
F. (+/-2) , the control will return to the HEAT PUMP opera-
tion and shut down the furnace if it is connected to the
Comfort Control Center.
Important:
If vehicle is not equipped with a furnace
no heat will be available below 32° F. (+/-2). IF vehicle
is equipped with a furnace and it is connected to its
own thermostat, it must be manually turned ON and
OFF for operation.
Defrost Cycle
This cycle is active during HEAT PUMP operation and al-
lows the heat pump to operate down to 32° F. (+/-2). When
the outside ambient temperature is less than 42° F.. (+/-2)
and greater than 32° F. (+/-2), a defrost timing cycle will
begin. The defrost timing cycle will allow operation of the
heat pump for 25 minutes. The fan will then be shut off,
the refrigerant flow reversed and run for 4-1/2 minutes
compressor only no fan, this is the DEFROST cycle. Dur-
ing the defrost cycle the hot refrigerant is sent to the out-
side coil to melt the frost and ice. This also will build heat
in the refrigerant. The refrigerant flow will then be returned
to normal and, after a 30 second delay will continue until
the temperature is greater than 42° F. (+/-2) or until the
temperature becomes less than 32° F. (+/-2), at which
time the furnace will activate. During the defrost cycle, the
DEFROST indicator on the LCD shall be illuminated.
D. Furnace Mode
. Momentarily depress and release the MODE push-
button until the FURNACE indicator on the LCD is il-
luminated.
2. The A/C fan does not operate in the FURNACE
mode.
3. Depress and release the UP push-button to increase
the temperature or the DOWN push-button to de-
crease the desired temperature. The final selected
SET-POINT will be displayed in the LCD area of the
Comfort Control Center.
4. The Duo-Therm air conditioning system will not oper-
ate when the Comfort Control System is in the FUR-
NACE mode. Furnace operation over rides all other
modes and zones when selected. For cooling, change
the MODE to COOL.
5. If your vehicle contains more than one ZONE, de-
press the ZONE push-button to select ZONE 2, and
repeat procedures from Step above. Repeat entire
procedure for each additional zone.
E. Heat Strip Mode
. Momentarily depress and release the MODE push-
button until the HEAT STRIP indicator on the LCD is
illuminated.
2. The fan will operate in LOW, MED or AUTO. You
will not be able to select HIGH speed when in the
HEAT STRIP mode. Depress and release the FAN
push- button to select desired speed. If your vehicle
is equipped with a heat pump, your selection choice
will be LOW and AUTO.
3. Depress and release the UP push-button to increase
the temperature or the DOWN push-button to de-
crease the temperature. The final selected SET-
POINT will be displayed in the LCD area of the Com-
fort Control Center.
4. The electric heat strip will cycle ON and OFF per the
temperature SET-POINT displayed. The fan will ei-
ther:
A. Continue to operate in the selected fan speed or,
B. Cycle OFF and ON with the heat strip if the AUTO
fan speed has been selected.
5. If your vehicle contains more than one ZONE, de-
press the ZONE push-button to select ZONE 2, and
repeat procedures from Step above.
Repeat entire procedure for each additional zone.
The temperature rise across the heat strip should be
5° to 7° degrees. If the temperature in the coach is
50° degrees the temp coming out of the unit will be
approximately 55° to 57°. On the hand this will feel
cool and the user may not think the unit is working.
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