Using The Humidity Control Routine; Custom Programming Record; Programming The Smx Ii System; Programming Summary Table - Dometic SMX II Description And Installation Manual

Using The Humidity
Control Routine
When engaged, the SMX humidity control routine automati-
cally turns the air conditioning system on at timed intervals to
remove moisture from the air. The system is programmed at
the factory for average values. To change the factory
settings, see "Humidity Control Program".
To start the dehumidification program:
• Press OFF.
• Press COOL, HEAT and FAN keys simultaneously.
For the SMXir Remote Control only - Press the Dehumid
key to enter dehumidification mode.
• The data display will flash HU, indicating that the program
is active.
• To halt the dehumidification program, press any key. The
HU message will stop flashing.

Programming Summary Table

Programmable Function
Factory Memory Reset
Fahrenheit/Celsius
Auxiliary (Electric) Heat
Setpoint Differential
Fan Mode (Cont. or Int.)
Low Fan Speed
High Fan Speed
Fan Response Differential
Temperature Calibration
HU Precirculation
HU Dehumidification
HU Time Period

Custom Programming Record

Use table below to keep track of any program changes. If a Factroy Memory Reset is performed, then all parameters will revert
back to factory default settings as outlined in the Programming Summary Table above.
Unit Location (Cabin #, Salon, etc.)
Programmable Function
Fahrenheit/Celsius
Auxiliary (Electric) Heat
Setpoint Differential
Fan Mode (Cont. or Int.)
Low Fan Speed
High Fan Speed
Fan Response Differential
HU Dehumidification
HU Time Period
L-0952 Operation

Programming the SMX II System

SMX control systems are programmed at the factory for
average values. For optimum performance, you may wish to
change these settings to suit your individual preferences.
All programming steps are entered by pressing the OFF key,
followed by the SET key, then simultaneously depressing the
two or three keys noted in the table below. Successful entry
into a programming mode is indicated by the presence of a
decimal point to the right of the two displayed characters. To
raise or lower a value, touch the UP or DOWN keys. To exit
the programming mode, touch the OFF key. (The SMXir
Remote Control cannot be used to program the system.)
Keystroke Combination
OFF & SET & FAN, then SET
DOWN & TEMP & UP
SET & HEAT
SLOW & FAN
DOWN & FAN & UP
DOWN & SET
SET & SLOW
COOL & SLOW
SET & UP
TEMP & DOWN
TEMP & SET
TEMP & UP
Unit 1 Unit 2
20
Factory Setting
See table below before reset
F
–
12
C
32
60
4
–
10 Min.
30 Min.
Control Program"
12 Hrs.
Unit 3 Unit 4
Range
F or C
– or AH
4 to 24
C or I
30 to 56
41 to 90
2 to 8
± 1%
10 Min.
See "Humidity
Unit 5
English