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DIPSWITCH BANK 2 NOT USED
4. System Configuration
Mode
Mode 1 (auto recovery after power failure)
Mode 2 (room temperature detection location)
Mode 24 (heat offset for height)
Choose a place where to install the RMF-CA100. The device provides two mounting holes to mechanically affix the case to a solid
1.
surface. Double-sided tape may be used to affix the device. When using tape, ensure that the tape is approved for use within the
anticipated operating temperature ranges.
Install the transformer, as necessary, per building code and manufacturer's installation instructions.
2.
Connect the RMF-CA100 cable to the connector CN105 on the indoor unit control board.
3.
Connect RMF-CA100 terminals using 18 AWG wire.
4.
Device Configuration
Initial settings can be configured via the dipswitches on the circuit board, SW1 and SW2 (not used). The circuit board can be accessed by
unfastening the four screws on the back of the case.
Additional request codes not addressed by the thermostat interface may be configured by temporarily connecting an MA remote controller.
Grouping
The connection of more than one RMF-CA100 to a single thermostat is not supported.
Temperature Sensing
The RMF-CA100 relies upon both the dry-contact thermostat and the indoor unit's thermistors in order to monitor room temperature. The
thermostat senses room temperature and establishes set temp. The Mitsubishi Electric indoor unit's return air thermistor is used for cooling
and heating calculation.
5. Operator Instructions
Operate the third-party thermostat per the manufacturer's instructions. During normal operation, the connection of Mitsubishi remote
controllers (e.g. MA/ME) is not supported, as they will interfere with the correct operation of the RMF-CA100.
Notes:
The indoor unit will limit the internal temperature control set point based on the indoor unit specification.
1.
Fan signals G1, G2, G3, when energized, take precedence over SW1-3&4.
2.
Only fan speeds available on the IDU can be set by the Thermostat Interface.
3.
The G signal is used only for operating the IDU in ventilation mode when all cooling and heating signals are disabled.
4.
When all cooling and signals are disabled, energizing G will place the IDU into ventilation mode.
5.
Display
The RMF-CA100 has 2-line/16-character LCD display and 4 buttons to navigate the menus. There are four buttons on the RMF-CA100: UP,
DOWN, OK & MENU
Using these buttons will allow navigating through menus and system configuration.
Operator Instructions: Menu Screen
Default Screen: The following operator instructions involve the use of the LCD screen and tactile buttons.
Main Screen:
This screen will display the current OPERATION MODE and the current FAN SPEED.
The default screen will display the MODE on line 1 and will display the FAN speed on line 2.
Screen example:
Mode display is dependent on the current state of operation (defined in MENU section below).
1.
If the state of operation is stage 1 heating or stage 2 heating, the MODE will display HEAT.
2.
If the state of operation is stage 1 cooling or stage 2 cooling, the MODE will display COOL.
3.
If the state of operation is Input Error state, the LCD will display MODE: INPUT-ERR.
RMF-CA100
Recommend to enable; default disabled
Unused (room temperature detected by the connected thermostat)
Unused
M O D E :
H E A T
F A N :
H I G H
3
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