DOMETIC 3313192.XXX Single Zone LCD Thermostat Instruction Manual
In the FURNACE Mode the system will cycle the RV’s furnace On
and Off based on the room air temperature and the temperature set-
point on the Single Zone LCD thermostat. The system can be con-
figured to operate using an On/Off differential of either 1 degree F
or 2 degree F. This feature is programmed during the system initial-
ization. See “System Initialization” on page 3.
To set the temperature differential the system must be Off. Press
the “―” button and, while holding it, also press and hold the On/Off
Mode button for three seconds. Release the On/Off Mode button.
Then release the “―” button. Press the “+” button to toggle between
“d1” and “d2”, “d1” for 1 degree F differential and “d2” for 2 de-
grees F differential.
“Heat Pump” - Heat Pump Mode (Select Models)
Heat Pump Operation: This mode of operation is customer chosen
and is usually selected when temperatures are below 70 °F and the
customer needs warmth in the living space rather than cool down.
This reverses the refrigerant flow in the air conditioner and causes
the inside air to dispense warm air rather than cold and the outside
air to dispense cold air rather than warm.
This mode of operation creates a dilemma where the outside coil
which is now dispensing cold air can freeze up due to the cold air
blowing across the coil mixed with the outside temperature. A freeze
up of the system can render your heat pump inoperable. Therefore,
we have a defrost feature that will prevent this from happening. See
"Special Features", on page 11 for more information on defrost
cycle.
9
In the Heat Pump Mode the system will cycle the compressor On
and Off based on the room air temperature and the temperature set-
point on the Single Zone LCD thermostat. When the system calls for
heating there will be a delay of approximately two minutes. In auto
fan, the compressor will turn On first followed by the fan in approxi-
mately 15 seconds. In this mode there are 3 fan speed selections:
Lo - (LOW): The fan operates continuously at low speed. The com-
pressor cycles On and Off.
Hi - (HIGH): The fan operates continuously at high speed. The com-
pressor cycles On and Off.
Au - (AUTO): When auto fan is selected the fan speed will vary
depending on the difference between the temperature set-point and
the room temperature. In auto fan the compressor and fan will cycle
On and Off with the thermostat. The compressor shuts off first fol-
lowed by the fan in approximately 15 seconds. See “Special Fea-
tures” on page 11 for more information on auto fan.
“Heat Strip” - Heat Strip Mode (Select Models)
In the Heat Strip Mode the system will cycle the heat strip On and
Off based on the room air temperature and the temperature set-
point on the Single Zone LCD thermostat. In this mode there are 3
fan speed selections:
Lo - (LOW): The fan operates continuously at low speed. The heat
strip cycles On and Off.
Hi - (HIGH): The fan operates continuously at high speed. The heat
strip cycles On and Off.
Au - (AUTO): The fan operates in low speed and will cycle On and
Off with the thermostat.
“Fan” - Fan Mode
In Fan Mode there are 3 fan speed selections:
Lo - (LOW): The fan operates continuously at low speed.
Hi - (HIGH): The fan operates continuously at high speed.
Au - (AUTO): The fan will be Off.
10
Special Features
Auto Fan
When auto fan is selected the fan speed will vary depending on the
difference between the temperature set-point and the room tempera-
ture. In auto fan the compressor and fan cycle On and Off with the
thermostat.
When the difference is:
>5º
<4º
The fan operates on HIGH
The fan operates on LOW
Compressor Time Delay
A time delay of approximately two minutes occurs any time the com-
pressor is required to begin the cooling or heat pump cycle.
Defrost Cycle
During heat pump operation, if the outside coil begins to freeze
up, a defrost cycle is initiated that temporarily puts the heat pump
back into air conditioning mode. This reverses the refrigerant flow
and melts the ice forming on the outside coil. Typically this oc-
curs when the outside temperatures are below 42 °F and repeats
every 25 minutes of compressor run time as long as the outside
temperature stays below 42 °F and above 30 °F. Therefore, dur-
ing this period of operation you, (the user) will temporarily feel
cold air inside the RV at the registers. This is normal and is NOT
an indication of malfunction. (Note: Defrost cycling shall con-
tinue until the measured temperature of the Outdoor Sensor is
≤30 °F or ≥42 °F.)
11
| General | Details |
|---|---|
| Name | DOMETIC 3313192.XXX Single Zone LCD Thermostat Instruction Manual |
| Make | Dometic |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.22 MB |
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