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How do I configure the settings for the TOSHIBA TCB-SFMCA1V-E?
To configure the settings for the TOSHIBA TCB-SFMCA1V-E, you must ensure the heat recovery ventilation unit is stopped. You will need to set the DN code for each function. For details on how to set the DN code, refer to the installation manual of the heat recovery ventilation unit or the remote controller (“9. DN setting” in the “7 Field setting menu”). For the VN-U0150/U0200 series, be sure to perform the setting on the master unit.
What are the available DN code settings for the TOSHIBA TCB-SFMCA1V-E multi-function sensor?
The following table lists the available DN code settings for the TOSHIBA TCB-SFMCA1V-E:
| DN code | Description | SET DATA and description | Factory default |
|---|---|---|---|
| 560 | CO2 concentration control | 0000: Uncontrolled 0001: Controlled |
0001: Controlled |
| 561 | CO2 concentration remote controller display | 0000: Hide 0001: Display |
0001: Display |
| 562 | CO2 concentration remote controller display correction | 0000: No correction -0010 – 0010: Remote controller display value (no correction) + setting data x 50 ppm |
0000: No correction |
| 563 | CO2 sensor altitude correction | 0000: No correction (altitude 0 m) 0000 – 0040: Setting data ×100 m altitude correction |
0000: No correction (altitude 0 m) |
| 564 | CO2 sensor calibration function | 0000: Autocalibration enabled, Force calibration disabled 0001: Autocalibration disabled, Force calibration disabled 0002: Autocalibration disabled, Force calibration enabled |
0000: Autocalibration enabled, Force calibration disabled |
| 565 | CO2 sensor force calibration | 0000: No calibrate 0001 – 0100: Calibrate with setting data × 20 ppm concentration |
0000: No calibrate |
| 566 | PM2.5 concentration control | 0000: Uncontrolled 0001: Controlled |
0001: Controlled |
| 567 | PM2.5 concentration remote controller display | 0000: Hide 0001: Display |
0001: Display |
| 568 | PM2.5 concentration remote controller display correction | 0000: No correction -0020 – 0020: Remote controller display value (no correction) + setting data × 10 µg/m³ |
0000: No correction |
| 5F6 | Multi function sensor (CO2 / PM) connection | 0000: Without connection 0001: With connection |
0000: Without connection |
| 790 | CO2 target concentration | 0000: 1000 ppm 0001: 1400 ppm 0002: 800 ppm |
0000: 1000 ppm |
| 793 | PM2.5 target concentration | 0000: 70 µg/m³ 0001: 100 µg/m³ 0002: 40 µg/m³ |
0000: 70 µg/m³ |
| 796 | Ventilation fan speed [AUTO] fixed operation | 0000: Invalid (according to fan speed in remote controller settings) 0001: Valid (fixed at Fan speed [AUTO]) |
0000: Invalid (according to fan speed in remote controller settings) |
| 79A | Fixed ventilation fan speed setting | 0000: High 0001: Medium 0002: Low |
0000: High |
| 79B | Concentration-controlled minimum ventilation fan speed | 0000: Low 0001: Medium 0002 (*1): Cooling and heating modes are Medium, Fan mode is Low *1 Only MMD-UPV* model is displayed. |
Depending on the model |
How do I set up the sensor connection for the TOSHIBA TCB-SFMCA1V-E to enable automatic fan speed control?
To perform automatic fan speed control using the CO2 / PM2.5 sensor, you must change the following setting to “0001: With connection”. This is a mandatory setting.
| DN code | SET DATA | 0000 | 0001 |
|---|---|---|---|
| 5F6 | Multi function sensor (CO2 / PM) connection | Without connection (factory default) | With connection |
How do I set the CO2 and PM2.5 target concentrations on the TOSHIBA TCB-SFMCA1V-E?
The target concentration is the level at which the fan speed will be at its highest. The fan speed changes automatically in up to 7 stages according to the CO2 and PM2.5 concentration. You can change the target concentrations using the settings below.
| DN code | SET DATA | 0000 | 0001 | 0002 |
|---|---|---|---|---|
| 790 | CO2 target concentration | 1000 ppm (factory default) | 1400 ppm | 800 ppm |
| 793 | PM2.5 target concentration | 70 µg/m³ (factory default) | 100 µg/m³ | 40 µg/m³ |
Please note the following:
• Although the fan speed is switched automatically, the detection concentration can differ depending on the operating environment and installation conditions. The concentration may go above the target depending on the environment.
• As a general guideline, the CO2 concentration should be 1000 ppm or less (REHVA).
• As a general guideline, the PM2.5 concentration (daily average) should be 70 µg/m³ or less (Ministry of Environment of China).
• The concentration at which the fan speed is the lowest will not change, with the CO2 concentration being 400 ppm and the PM2.5 concentration being 5 µg/m³.
How can I hide or display the CO2 and PM2.5 concentration on the remote controller for my TOSHIBA TCB-SFMCA1V-E?
The display of the CO2 and PM2.5 concentrations on the remote controller can be hidden or shown using the following DN code settings:
| DN code | SET DATA | 0000 | 0001 |
|---|---|---|---|
| 561 | CO2 concentration remote controller display | Hide | Display (factory default) |
| 567 | PM2.5 concentration remote controller display | Hide | Display (factory default) |
Important points:
• Even if the concentration is hidden, automatic fan speed control will still be performed if DN codes “560” (CO2) and “566” (PM2.5) are enabled.
• If the concentration is hidden, a sensor failure message (CO2: “- – ppm”, PM2.5: “- – µg/m³”) will also not be displayed.
• The display range of the concentration is: CO2: 300 – 5000 ppm, PM2.5: 0 – 999 µg/m³.
How do I correct the CO2 and PM2.5 concentration values displayed on the remote controller for the TOSHIBA TCB-SFMCA1V-E?
The sensor detects concentrations at the RA air path of the heat recovery ventilation unit. Due to unevenness in indoor concentration, a difference may occur between the remote controller display and an environmental measurement. In such cases, the displayed value can be corrected using the following DN code settings.
| DN code | SET DATA | -0010 – 0010 |
|---|---|---|
| 562 | CO2 concentration remote controller display correction | Remote controller display value (no correction) + setting data × 50 ppm (factory default: 0000 (no correction)) |
| DN code | SET DATA | -0020 – 0020 |
|---|---|---|
| 568 | PM2.5 concentration remote controller display correction | Remote controller display value (no correction) + setting data × 10 µg/m³ (factory default: 0000 (no correction)) |
Notes:
• The CO2 concentration will appear as “- – ppm” if the corrected value is too low.
• If the corrected PM2.5 concentration is negative, it will appear as “0 µg/m³”.
• This correction only affects the value displayed by the remote controller.
How do I enable or disable automatic fan speed control based on CO2 and PM2.5 concentrations for the TOSHIBA TCB-SFMCA1V-E?
Automatic fan speed control based on CO2 or PM2.5 concentration can be selected individually. When both controls are enabled, the unit will operate at a fan speed that addresses the higher of the two concentrations. Use the following DN codes to enable or disable these controls.
| DN code | SET DATA | 0000 | 0001 |
|---|---|---|---|
| 560 | CO2 concentration control | Uncontrolled | Controlled (factory default) |
| 566 | PM2.5 concentration control | Uncontrolled | Controlled (factory default) |
Caution: Both CO2 and PM2.5 concentration controls are enabled by default. Be extra careful when disabling either control, as the following issues may occur:
1) If CO2 concentration control is disabled and the PM2.5 concentration is low, the fan speed will drop, which may cause the indoor CO2 concentration to rise.
2) If PM2.5 concentration control is disabled and the CO2 concentration is low, the fan speed will drop, which may cause the indoor PM2.5 concentration to rise.
How does the system configuration affect the remote controller display and concentration control on the TOSHIBA TCB-SFMCA1V-E?
The behavior of the remote controller display and concentration control depends on the system configuration:
• Heat recovery ventilation unit only system (when multiple units are in a group)
The CO2 / PM2.5 concentration displayed on the remote controller (RBC-A*SU5*) is from the sensor connected to the header unit. Automatic fan speed control by the sensor only applies to heat recovery ventilation units that are connected to a sensor. Units not connected to a sensor will run at a fixed ventilation fan speed setting when Fan speed [AUTO] is selected.
• When system is linked with air conditioners
The CO2 / PM2.5 concentration displayed on the remote controller (RBC-A*SU5*) is from the sensor connected to the heat recovery ventilation unit with the smallest indoor address. Automatic fan speed control by the sensor only applies to heat recovery ventilation units connected to a sensor. Units not connected to a sensor will run at a fixed ventilation fan speed setting when Fan speed [AUTO] is selected.
How can I change the minimum ventilation fan speed for automatic fan speed control on my TOSHIBA TCB-SFMCA1V-E?
You can change the minimum ventilation fan speed used during automatic fan speed control with the following DN code setting:
| DN code | SET DATA | 0000 | 0001 | 0002 (*1) |
|---|---|---|---|---|
| 79B | Concentration-controlled minimum ventilation fan speed | Low (factory default: VN-U* model) | Medium | Cooling and heating modes are Medium, Fan mode is Low (factory default: MMD-UPV* model) |
*1 Only MMD-UPV* model is displayed.
What happens if the sensor fails or is not equipped on my TOSHIBA TCB-SFMCA1V-E, and how do I set the fixed fan speed?
In a system with multiple heat recovery ventilation units, those without a sensor will run at a fixed ventilation fan speed when Fan speed [AUTO] is selected. Similarly, a unit with a failed sensor will also run at this fixed speed. You can set this fixed fan speed using the DN code below.
| DN code | SET DATA | 0000 | 0001 | 0002 |
|---|---|---|---|---|
| 79A | Fixed ventilation fan speed setting | High (factory default) | Medium | Low |
Note:
• If this DN code is set to [High], the unit will run in [High] mode even if DN code “5D” is set to [Extra High]. To set the fan speed to [Extra High], refer to the installation manual of the heat recovery ventilation unit and set DN codes “750” and “754” to 100%.
• If both CO2 and PM2.5 controls are enabled and one sensor fails, the unit will continue automatic fan speed control with the functioning sensor.
How do I manage the CO2 sensor calibration functions on the TOSHIBA TCB-SFMCA1V-E?
The CO2 sensor uses automatic calibration (autocalibration) by referencing the lowest CO2 concentration in the past week. If the unit is in an environment where the CO2 concentration is always high, the detected value may deviate. In such cases, you should either disable autocalibration or perform a force calibration.
1. Automatic Calibration Function Setting:
| DN code | SET DATA | 0000 | 0001 | 0002 |
|---|---|---|---|---|
| 564 | CO2 sensor automatic calibration function | Autocalibration enabled Force calibration disabled (factory default) |
Autocalibration disabled Force calibration disabled |
Autocalibration disabled Force calibration enabled |
2. Force Calibration Setting:
To perform a force calibration, first set DN code “564” to 0002. Then, set DN code “565” to a numeric value based on a separate measuring instrument.
| DN code | SET DATA | 0000 | 0001 – 0100 |
|---|---|---|---|
| 565 | CO2 sensor force calibration | No calibrate (factory default) | Calibrate with setting data × 20 ppm concentration |
To perform force calibration, run the heat recovery ventilation unit when the CO2 concentration is stable. Use a separate measuring instrument to measure the CO2 concentration at the air inlet (RA), then quickly set this value using the prescribed method on the remote controller. Force calibration is performed only once after configuration and is not a periodic process.
How do I apply an altitude correction for the CO2 sensor on my TOSHIBA TCB-SFMCA1V-E?
The CO2 concentration reading can be corrected according to the altitude at which the heat recovery ventilation unit is installed. Use the following DN code setting to apply the correction.
| DN code | SET DATA | 0000 | 0000 – 0040 |
|---|---|---|---|
| 563 | CO2 sensor altitude correction | No correction (altitude 0 m) (factory default) | Setting data x 100 m altitude correction |
How can I force the TOSHIBA TCB-SFMCA1V-E to run at Fan speed [AUTO] when connected to an air conditioner?
For a system connected to an air conditioner, Fan speed [AUTO] cannot be selected from the remote controller. By changing the DN code “796” setting, you can force the heat recovery ventilation unit to run at Fan speed [AUTO] regardless of the fan speed set by the remote controller. Note that in this case, the fan speed will be fixed at [AUTO].
| DN code | SET DATA | 0000 | 0001 |
|---|---|---|---|
| 796 | Ventilation fan speed [AUTO] fixed operation | Invalid (according to fan speed in remote controller settings) (factory default) | Valid (fixed at Fan speed [AUTO]) |
What do the check codes for the CO2 and PM2.5 sensor on my TOSHIBA TCB-SFMCA1V-E mean?
The following table lists the check codes related to the CO2 and PM2.5 sensor, their typical causes, and descriptions. The “Judging device” refers to the heat recovery ventilation unit or the air conditioner.
| Check code | Typical cause of trouble | Judging device | Check points and description |
|---|---|---|---|
| E30 | Indoor unit – sensor board communication trouble | Indoor | When communication between the Indoor unit and sensor boards is not possible (operation continues) |
| J04 | CO2 sensor trouble | Indoor | When a CO2 sensor trouble is detected (operation continues) |
| J05 | PM sensor trouble | Indoor | When a PM2.5 sensor trouble is detected (operation continues) |
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