Mitsubishi Electric RMF-CA100-V1 Quick guide

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© Mitsubishi Electric Sales Canada Inc. All rights reserved.
RMF-CA100-V1 Thermostat Interface
INSTALLATION / INSTRUCTION MANUAL
Read prior to installing/operating device. Keep this manual for future reference.
Contents
1. Supplied Parts. ...........................................................................1
1-1. Optional Parts.............................................................................1
2. Safety Precautions.....................................................................1
3. Installation....................................................................................... 1
3-1. Configuration Options…………………………………………………….2
4. System Configuration...................................................................... 3
5. Operator Instruction………………………………………………………3
6. Troubleshooting .........................................................................3
7. Error Codes……………………………………………………………4
1. Supplied Parts
RMF-CA100-V1 Thermostat Interface (1)
RMF-CA100 Manual (1)
1-1. OptionalParts
PAC-SE41TS-E Remote Sensor –Part is recommended for applications with a large delta-t (Δt) between the 3rd party
thermostat sensing location and the return air thermistor (TH1).
Please review troubleshooting section below prior to installation of PAC-SE41TS-E Remote Sensor.
2. Safety Precautions
THOROUGHLY READ THE FOLLOWING SAFETY PRECAUTIONS BEFORE EACH USE OF THIS PRODUCT (THE “DEVICE”).
• Do not expose the device to, or immerse the device in, water. Doing so could lead to electrical shock to a person, device malfunction or
device damage.
• Do not install the device in a bathroom, kitchen, orany room where highhumidityorsteam could form. Condensationcould develop onoraround
thedeviceand cause electrical shock toa person,device malfunction and device damage.
• Do not install the device in a location where a gas leak could occur.
• Do not exposethedevicetoheat or radiation,includingdirectsunlight, or install the device in a location where thetemperature could begreater
than 40°C (104°F) orless than 0°C (32°F). This could result in devicedeformation or device malfunction.
• Always ensure the device is installed in an area without exposure to high frequency noise.
• Power generators, inverters, and high-frequency or radio communication equipment may interfere with the operation ofthis device.
• All electrical work should be performed by a qualified technician and in accordance with applicable laws andinstructions outlined in this
manual.
• Use standard wiring with the proper current capacity to avoid current leak, excessive heat, and fire.
• Use onlyspecified cables and wiring; securely connect each sothat the terminals do not bear anyweight.
• Include slack inthe power supply wiring. Tensionin the wiring may cause it toexcessively heat up and break, which could result in a fire.
• Improperlyconnectedorshort-circuited cables orwiringmay produce heat and cause device malfunction, device damage, and fire.
• Capacity shortage tothepower supply circuit orimproper installation may result in electrical shock or fire.
• Do not modify or alter this device or cable in any manner whatsoever.
3. Installation
Thermostat may be configured for use with a conventional system.
• Make all connections with 18AWG thermostat wire.
• Wire connection terminals support 20-30VAC.
• High/medium/low fan signals (G1,G2,G3) are optional, and may not be available on all thermostatmodels.
WARNING - INCORRECT HANDLING CAN RESULT IN ELECTRICAL INJURY, DEVICE MALFUNCTION AND DAMAGE

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© Mitsubishi Electric Sales Canada Inc. All rights reserved.
Note: Auxiliaryheat control is not controlled by the RMF-CA100. Auxiliaryheat control remains with Mitsubishi
ElectricCN24 connector on compatible indoorunits.
3-1. Configuration Options
Two-Stage Cooling and Heating - Dipswitch 1-1 set to OFF position (default position) Installation
RMF-CA100 operates in dual stage heat / cool mode using thermostat signals W1, W2, Y1, Y2, and fan signal (G). G1, G2 and G3 are
available but not required.
Single-Stage Operation Installation (Simulated VRF) - Dipswitch 1-1 set toONposition; if Y2 or W2 is left unconnected or
is unavailable from the thermostat. This configures singlestage operation of RMF-CA100 simulating multiple stage operation
using temperature differential based on W1 / Y1 call and run time.
RMF-CA100 Connector Pin Layout
Pin
Signal
Description
1
TC
Common (In) Transformer
2
C
Common (Out) To Thermostat
3
TR
24 VAC Transformer
4
R
24 VAC to Thermostat
5
G3
High Fan
6
G2
Medium Fan
7
G1
Low Fan
8
Y2
Stage 2 Cooling
9
Y1
Stage 1 Cooling
10
W2
Stage 2 Heat
11
W1
Stage 1 Heat
12
G
Fan
13
W3
NOT SUPPORTED
14
O4
15
O3
16
ER
Error Output (Out)
Two-Stage
Operation
Single-Stage
Operation
RMF-CA100 Connector Pin Layout
Pin
Signal
Description
1
TC
Common (In) Transformer
2
C
Common (Out) To Thermostat
3
TR
24 VAC Transformer
4
R
24 VAC to Thermostat
5
G3
High Fan
6
G2
Medium Fan
7
G1
Low Fan
8
Y2
Do Not Connect
9
Y1
Stage 1 Cooling
10
W2
Do Not Connect
11
W1
Stage 1 Heat
12
G
Fan
13
W3
NOT SUPPORTED
14
O4
15
O3
16
ER
Error Output (Out)

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© Mitsubishi Electric Sales Canada Inc. All rights reserved.
DIPSWITCH BANK 1 (SW1)
4. System Configuration
1. Choose a place where to install the RMF-CA100. The device provides two mounting holes to mechanically affix the case to a solid
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.
2. Install the transformer, as necessary, per building code and manufacturer’s installation instructions.
3. Connect the RMF-CA100 cable to the connector CN105 on the indoor unit control board.
4. Connect RMF-CA100 terminals using 18 AWG wire.
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 andthe indoorunit’s thermistors inorder to monitor room temperature. The
thermostat senses room temperature and establishes set temp. The MitsubishiElectricindoor unit’s return airthermistor is used for cooling
and heating calculation.
#
Input
Description (dip-switch position represented as black [ ] –default OFF)
1
SW1-1
If ON, do not connect thermostat wire to W2 or Y2 terminals of RMF-CA100; W1 and Y1 MUST be used.
Dual Stage
Operation
(DEFAULT)
Simulated
VRF
(Single Stage
Heat/Cool)
Operation
2
SW1-2
Unused N/A
3
SW1-3
Fan speed isdefined by SW1-3 andSW1-4 in stage 1operationwhen G1, G2 and G3 are inactive:
Low
(DEFAULT)
Medium
High
Quiet
4
SW1-4
5
SW1-5
Simulated VRF capacity increase time-delay when SW1-1 ON is defined below:
20 Minute
(DEFAULT)
10 Minute
15 Minute
25 Minute
6
SW1-6

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M O D E :
F A N :
H E A T
H I G H
5. Operator Instructions
Operate the third-party thermostat per the manufacturer’s instructions. During normal operation, theconnection of Mitsubishi Electric remote
controllers (e.g. MA/ME) is not supported, as they will interfere with the correct operation of theRMF-CA100.
Notes:
1. The indoor unit will limit the internal temperature control set point based on the indoor unit specification.
2. Fan signals G1, G2, G3 , when energized, take precedence over SW1-3&4 .
3. Only fan speeds available on the IDU can be set by the Thermostat Interface.
4. The G signal is used only for operating the IDU in ventilation mode when no cooling or heating signals is energized.
5. When all cooling and signals are disabled, energizing G will place the IDU into ventilationmode.
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, theMODE will display HEAT.
2. If the state of operation is stage 1 cooling or stage 2 cooling, theMODE will display COOL.
3. If the state of operation is Input Error state, the LCD will display MODE: INPUT-ERR.
4. If the state of operation is No Call state:
a. If 2 hour has not elapsed since exit heat mode (thermal off), the MODE display HTG HOLD (heatinghold).
b. If G1 thermo input is ON, the LCD display reads MODE: FAN G1 FAN: LOW
c. If G2 thermo input is ON, the LCD display reads MODE: FAN G2 FAN: MED
d. If G3 thermo input is ON, the LCD display reads MODE: FAN G3 FAN: HIGH
e. If G thermo input is ON, and if G1 G2 & G3 are OFF, the LCD display reads MODE: FAN G FAN: LOW
i. G fan speed is a mode item and can be changed using the MENU –FAN SPEED submenu
f. If G1, G2, G3, and G thermo inputs are off, the LCD display reads MODE: NO CALL FAN: OFF.
5. If the system is operating in test mode the mode displays HEAT TEST or COOL TEST depending on selecting operatingmode.
Mode Options: Menu Screen
The menu screen displays the different menu options that are available. The menu screen is accessed by pressing the MENU button. To return
to the default screen, press the MENU button again. The menu screen will display different configuration options:
- ERROR HISTORY
- MODE SETTINGS
oMODE OPTIONS
oFAN SPEED
- TEST SETTINGS
oNO TEST
oHEAT TEST
oCOOL TEST
- TIME SETTINGS
oSET DATE
oSET TIME
- THERMO INPUT
- FW VERSION
Sub menu options are accessed using the UP/DOWN buttons then pressing OK once the submenu is selected. To return to the main menu
screen, press the MENU button again.
Screen Example:
E R R O R
M O D E
H I S T O R Y
S E T T I N G

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0 1 E R R O R
2 0 1 9 0 9 2 0
4 2 0 8 –A B
1 2 : 5 9 A
Operator Instructions: Screens –Error History Screen
The error history screen displays the saved error codes (latest errors displayed first). This screen displays up to 10 errors before overwriting.
UP/DOWN button is used to navigate between saved errors. Each screen displays the error page (one of 10), the error code, and the time/date
Screen example:
Operator Instructions: Screens –Mode Setting Screen
The mode setting screen is accessed by navigating to the MODE SETTINGS menu after pressing the menu button. This allows the operator to
configure MODE settings.
The MODE SETTINGS screen will display all 28 configuration modes and G-fan speed submenu.
Mode settings are displayed to the right of the mode values. This will either be 1, 2, or 3. If the mode is not available by the unit, the mode will
not be accepted.
Example –mode 3 is available, mode 4 is not. Mode 3 currently is set to 1, Mode 4 is unavailable, and Mode 5 is set to 3.
Pressing the OK button will select a mode to modify. Upon pressing the OK button, the MODE SETTING will be selected. Pressing UP/DOWN
will navigate between mode options 1, 2, or 3. Pressing OK will save the selection, and return back to navigating MODE SETTINGS. Pressing
the MENU button will cancel the mode selection and return to navigating the MODE SETTINGS screen.
To exit the MODE SETTINGS screen, press the MENU button.
A confirmation screen will appear to save setting. The operator can select Y or N via the UP/DOWN/OK button.
Operator Instructions: Screens –Test Settings
There are three menu options available in the TEST SETTINGS mode. While in TEST SETTING mode, pressing MENU button returns system to
normal operation. After 1 hour in HEAT TEST or COOL TEST mode the system automatically exits test mode and returns to default screen and
returns to normal operation. THIS SETTING IS COMPLETELY UNIQUE TO RMF-CA100 AND SEPARATE FROM DIAGNOSTIC EQUIPMENT
TEST MODES.
NO TEST: Selecting NO TEST returns to default screen.
HEAT TEST: Firmware ignores thermostat inputs and commands HVAC to enter HEAT OPERATION MODE with FAN SPEED set to HIGH,
SET TEMP to 27°C
COOL TEST: Firmware ignores thermostat inputs and commands HVAC to enter COOL OPERATION MODE with FAN SPEED set to HIGH,
SET TEMP to 16°C
Screens –Time Screen
The time screen is accessed by navigating to the TIME MODE submenu from the main menu. The time screen is used to set the Date and
For each submenu, the UP/DOWN buttons are used to navigate between settings, the OK button is used to select the setting, and the MENU
button is used to exit.
A confirmation screen will appear to save setting. The operator can select Y or N via the UP/DOWN/OK button.
Selecting N, discards the changes.
Selecting Y, saves the settings, then sends the operation commands out to the HVAC unit.
Operator Instructions: Screens –Thermo Input
THERMO INPUT screen displays state of six thermostat inputs: W1, W2, Y1, Y2, G, G1, G2, G3. This option is designed to assist in
troubleshooting and confirming signals are being received by the RMF-CA100 interface.
0 = No signal received. 1 = Receiving signal. The following is an example of the Thermo Input screen when all the inputs are inactive:
MODE 3
MODE 5
1
3
S A V E S E T T I N G ?
Y N
S A V E S E T T I N G ?
Y N
W 1 0 W 2 0 Y 1 0
G 0 G 1 0 G 2 0
Y 2 0
G 3 0

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DUCTED AIRHANDLING UNIT FUNCTION SETTINGS (PVA/SVZ/SEZ/PEAD)
Definition
Mode
Setting
#
Setting Description
Power Failure Auto Restart
1
1
Disabled
2*
Enabled
Static Settings
08 & 10
See Static Pressure Settings Below
Heater Control *1
11
1*
No Heater Present
2
Heater Present
Optional Humidifier *2
13
1
Not Supported
2
Supported
Frost Prevention Temp
15
1*
2°C (36°F)
2
3°C (37°F)
Humidifier Control *2
16
1*
With Compressor Only
2
In Heat Mode
Heater Control *3
23
1*
Set Temp-2.5°C ON
2
Set Temp-2.5°C ON & Enable Heater During Defrost/Error
Heater Control *2
23
1*
Disabled Heater During Defrost/Error
2
Enabled Heater During Defrost/Error
Heating Height Offset 4°C
24
1*
Available (ON) 4°C (7.2°F) UP
2
Not Available (OFF)
Fan Speed Thermal-Off (Heating)
25
1*
Extra Low
2
Stop
3
3rd Party Thermostat Setting
ERV Control *2
26
1*
IDU STOP, Fan speed STOP, and CN2C is OFF
2
CNER input ON, Fan speed & CN2C is ON
Fan Speed Thermal-Off (Cooling)
27
1*
3rd Party Thermostat Setting
2
Stop
Abnormal Pipe Temperature
Detection (P8)
28
1*
Available (ON)
2
Not Available (OFF)
*1 –Enabled from factory on SEZ indoor unit.
*2 –Supported on PVA, SVZ & PEAD indoor units.
*3 –Supported on SEZ indoor unit only.
* –Factory default
External Static Pressure
Setting No. of
Mode 08
Setting No. of
Mode 10
0.30 in. WG [75Pa]
1
1
0.50 in. WG [125Pa]
2
1
0.80 in. WG [200Pa]
3
1
External Static Pressure
Setting No. of
Mode 08
Setting No. of
Mode 10
0.30 in. WG [75Pa]
1
2
0.50 in. WG [125Pa]
2
2
0.80 in. WG [200Pa]
3
2
External Static Pressure Setting for SEZ
External Static
Pressure
Setting No.
of Mode 08
Setting No.
of Mode 10
0.02 in. WG [5Pa]
1
2
0.06 in. WG [15Pa]
1
1
0.14 in. WG [35Pa]
2
1
0.20 in. WG [50Pa]
3
1
External Static Pressure Setting for PEAD
External Static
Pressure
Setting No.
of Mode 08
Setting No.
of Mode 10
0.14 in. WG [35Pa]
2
1
0.20 in. WG [50Pa]
3
1
0.28 in. WG [70Pa]
1
2
0.40 in. WG [100Pa]
2
2
0.60 in. WG [150Pa]
3
2
PVA & SVZ - Vertical, Horizontal Left, Horizontal Right External Static
Pressure Setting.
PVA & SVZ - Downflow External Static Pressure Setting

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DUCTED AIRHANDLING UNIT FUNCTION SETTINGS (PEFY/PVFY)
Dipswitch
Description
Remarks
SW1-9
Auto restart after power failure
Activate when unit stopped
Not effective
On
Off
9
Effective*
On
Off
9
SW1-1
Indoor temperature detecting
Activate when unit stopped
At fan coil*
On
Off
1
At remote control
On
Off
1
SW4-4
Fresh air intake
Activate when unit stopped
Not effective*
On
Off
4
Effective
On
Off
4
SW1-6
Humidifier control
Activate when unit stopped
*1 Operates during heat thermo on
*2 Operates when fan is on and in heat mode
During heating
operation* *1
On
Off
6
Always on while in
heating mode *2
On
Off
6
SW1-3
Filter cleaning
Activate when unit stopped
Set to 100H
On
Off
3
Set to 2500H*
On
Off
3
SW3-2
Heater control
Activate when unit stopped
Settings are dependant on individual application
Heater
unavailable*
On
Off
2
Heater available
On
Off
2
SW3-4
Heater control during defrost and error
Activate when unit stopped
Unavailable*
On
Off
4
Available
On
Off
4
SW5
Main power voltage
Set SW5 to 240V side when the power supply is 230 volts.
When the power supply is 208 volts, set SW5 to 220V side.
Set as per site power requirement.
*
220V
240V
220V
240V
Note: All dip-switch settings mentioned on this page are found on the indoor unit controller board.
Function 84
Please leave as factory default
Function 85
Please leave as factory default
Function 107 - 2
Please leave as factory default
*1 - Time delay can only be selected with MA controller. If use of a non-MA controller is desired, the time delay must first be
selected with the MA controller. Then the non-MA controller can be attached and used.
*2 - The default time delay setting is 20 minutes.
*3 - Time delays are approximate.
* - Factory default setting.
Function *1
Action *3
108 –1
Set time delay to 10 mins
108 –2
Set time delay to 15 mins
108 –3
Set time delay to 20 mins*2
108 - 4
Set time delay to 25 mins

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© Mitsubishi Electric Sales Canada Inc. All rights reserved.
6. Troubleshooting
This section shall be used for referencing error codes displayed on RMF-CA100 when connected with corresponding units found in tables
below.
Always reference product specific manuals for troubleshooting unit errors. For more information on troubleshooting procedures visit
www.mitsubishitechinfo.ca
Problem
Checkpoints
Remarks
Blank LED screen on
RMF-CA100
o Check CN105 connector and
cable between RMF-CA100 and
indoor controller board.
o Check power supply to indoor
unit.
o LED screen is powered by
CN105 via indoor controller
board.
o Power supply voltage should
be between 208/230 VAC (+/-
10%).
Unit does not operate
(heat, cool, fan mode)
o Confirm all thermostat wire
connections are correct.
o Check 24VAC between C
terminal at RMF-CA100 to
corresponding input/mode.
o Verify input by using thermo
input menu on RMF-CA100
interface. Please refer to page
6 of this manual.
Unit does not operate
correctly in cooling
o Verify Y1 and/or Y1/Y2 value is ‘1’
on thermo input menu on RMF-
CA100 interface. Please refer to
page 6 of this manual.
o Check TH1/return air temperature
value is above/below the
highest/lowest set-point available
to the applicable unit.
o Check mode setting 27 is set to 1
(M&P-Series only)
o Check insulation and air-leaks in
ductwork design
(conditioned/unconditioned
spaces).
o Reference section above
o The system will not operate in
cooling, if TH1 (return air
thermistor) reading below the
minimum allowable set-point
by the indoor unit.
o Fan operation during cooling
thermal off, may improve
accuracy of temperature
measured at TH1 (return air
thermistor)
Unit does not operate
correctly in heating
o Verify W1 and/or W1/W2 value is
‘1’ on thermo input menu on
RMF-CA100 interface. Please
refer to page 6 of this manual.
o Check TH1 (return air thermistor)
value is not above/below the
highest/lowest set-point available
to the applicable unit
o Check mode setting 25 is set to 1
(M&P-Series only)
o Check mode setting 24 is set to 2.
(M&P-Series only)
o Check indoor controller board
dipswitch SW3-8 is ON (City Multi
only)
o Check insulation and air-leaks in
ductwork design
(conditioned/unconditioned
spaces)
o The system will continue
operating in heating, if TH1
(return air thermistor) reading
below the minimum allowable
set-point by the indoor unit.
o Fan operation during heating
thermal off, may improve
accuracy of temperature
measured at TH1 (return air
thermistor).

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© Mitsubishi Electric Sales Canada Inc. All rights reserved.
7. Error Codes
This section shall be used for referencing error codes displayed on RMF-CA100 when connected with corresponding units found in tables
below.
Always reference product specific manuals for troubleshooting unit errors. For more information on troubleshooting procedures visit
www.mitsubishitechinfo.ca
M and P Series Error Codes
Communication
Error
EE
Communication error between indoor and outdoor units
E4
Remote controller receiving error
E6/E7
Indoor / outdoor unit communication error
E9
Indoor / outdoor unit communication error (Transmitting error) (Outdoor unit)
Fb
Indoor unit control system error (memory error, etc.)
Thermistor
Error
P1
Intake sensor error
P2/P9
Pipe (Liquid or two-phase pipe) sensor error
P6
Freezing/Overheating safeguard operation
P8
Pipe temperature error
Indoor Unit
Error
PB
Fan motor error
P4
Drain sensor error
P5
Drain pump error
Outdoor Unit
Error
UP
Compressor overcurrent interruption
UF
Compressor overcurrent interruption (When compressor locked)
U1/Ud
Abnormal high pressure (63H worked) / overheating safeguard operation
U2
Abnormal high discharging temperature / 49C worked / insufficient refrigerant
U3/U4
Open / short of outdoor unit thermistors
U5
Abnormal temperature of heat sink
U6
Compressor overcurrent interruption / Abnormal of power module
U7
Abnormality of superheat due to low discharge temperature
U8
Outdoor unit fan protection stop
U9/UH
Abnormality such as overvoltage or voltage shortage and abnormal synchronous
signal to main circuit / Current sensor error

10
© Mitsubishi Electric Sales Canada Inc. All rights reserved.
This section shall be used for referencing error codes displayed on RMF-CA100 when connected with corresponding units found in tables
below.
Always reference product specific manuals for troubleshooting unit errors. For more information on troubleshooting procedures visit
www.mitsubishitechinfo.ca
City Multi Error Codes
1000 –Pressure / Temperature
1102
Discharge temperature abnormality
1301
Low pressure abnormality (OC)
1302
High pressure abnormality (OC)
1500
Overcharged refrigerant abnormality
2000 –Water
2500
Leakage (water) abnormality
2502
Drain pump abnormality
2503
Drain sensor abnormality
2600
Water leakage (LC)
2601
Water-supply cut (LC)
4000 –Power / Inverter
4103
Reverse phase abnormality
4108
Over-current protection ([P450-P650 model] No.2 Comp)
4115
Power supply sync signal abnormality
4116
Fan speed abnormality (motor abnormality) (IC, LC)
5000 –Thermistor / Transducer
5101
Air inlet (TH21:IC)
Open-air treatment inlet (TH4:LC)
Discharge (TH1/TH11, TH12:OC)
5102
Liquid pipe (TH22: IC)
Open-air treatment pipe (TH2:LC)
5103
Gas pipe (TH23:IC)
Open-air treatment gas pipe (TH2:LC)
5104
Open-air treatment open air (TH1)
Open-air temperature (TH24)
5105
Pipe (TH5)
5106
Ambient temperature (TH6)
5107
Pipe (TH7)
6000 –Communication
6600
Multiple address abnormality
6601
Unset polarity
6602
Transmission processor hardware abnormality
6603
Transmission circuit bus-busy abnormality
6606
Communications with transmission processor abnormality
6607
No ACK abnormality
7000 –System Settings
7100
Total capacity abnormality
7101
Capacity code abnormality
7102
Error in the number of connected units
IM_RMF-CA100-V1_082022 FM