HMDeviceFirmware

C H A N G E L O G

Please note: Only use the firmware file in connection with the current software-version of the CCUx!

Device: HmIP-BWTH24 - Homematic IP Wall Thermostat with switching output

Company: eQ-3, Maiburger Str. 29, 26789 Leer, Germany

Version 3.0.4 - 2024-12-02

** Bugfix

• Symbol display for heating / cooling is missing if an actuator link exists. With the new FW version it is now possible to operate the two-point control depending on the operating mode (heating / cooling). Here, the symbol should also be shown on the display accordingly.
• The Encoder-Button response without backlight "Off", only worked every second time.
• The "Heating Controller Mode" frame was sent several times. The "Heating Controller Mode" telegram was sent cyclically to each channel of the FAL. It is sufficient if the telegram is sent to the FAL only once.
• Boosttime was set in Party-Status-Info-Frame even if boost was not active.
• Boot flag is reset prematurely. If a time info request is sent after a restart, the boot flag must not be missing in the regular status frame. If no response is sent from the access point to the time info request after a restart, the boot flag must not be reset in the status until the status frame has been acknowledged.
• The device send no DEC telegram to link partners if a new link partner was previously added or removed.
• Instead of a conditional switch command the device should send a level command to linked switch actuators. This allows the actuator to be deactivated directly by the wall thermostat
• Emergency shutdown at 30°C during cooling. Cooling is also active when the set temperature is greater than 30.0°C
• Hysteresis for 2-point control with switching actuator does not work as specified. The hysteresis was not evaluated correctly for the humidity. The resolution should be 1%. However, it actually had a resolution of 2%.
• In stand-alone operation, the sense of NO and NC was swapped.
• In FW 2.8.10 the device sporadically sends inexplicably frequent status frames to the AP/CCU
• The switching state is not restored after a power failure After a power failure, the switching output was not reactivated if it was previously switched. However, active was still displayed in the status frame.
• Continuous flashing if present in central program If the central unit was linked as a link partner, the orange transmission flashing was not ended by the confirmation ACK but only after the timeout. After the timeout, the LED briefly lit up red.
• The device no longer works if the parameter PUMP_SWITCHING_INTERVAL in channel 14 are set to zero (not active).
• After deleting the internal link between channel 8 and channel 10, the level state is not reset to 0. As a result, the temperature compensation is no longer carried out correctly and the actual temperature is displayed with a value that is too low.

** Improvement

• The automatic switchover from manu-mode to auto-mode after a restart following receipt of the first time-info telegram should be deactivated.
• The "Heating Controller Mode" frame was sent several times. The "Heating Controller Mode" telegram was sent cyclically to each channel of the FAL. It is sufficient if the telegram is sent to the FAL only once.
• Instead of a conditional switch command the device should send a level command to linked switch actuators. This allows the actuator to be deactivated directly by the wall thermostat.
• The cooling profile factory setting is set to 28°C.
• Reduction of status messages, when the relay status changes, not the complete status information is sent.

** New Feature

• Implementation of the "Heating controller 2 bit field" parameter in list 1 for channel 5 The parameter values COOLING_ENABLE and HEATING_ENABLE were added for channel 5 (Actuator link partner). This makes it possible to deactivate cooling or heating in the respective mode.

Version 2.8.010 - 2022-10-10

** Bugfix

• After reinclusion, partly cyclic data telegrams for eTRV, actuator and FAL are not sent.

Version 2.8.008 - 2022-09-06

** Bugfix

• Device does not respond to ALL_TRIPLE_BURST_LISTENING_DEVICES. A generally valid message to the address ALL_TRIPLE_BURST_LISTENING_DEVICES is supported now.
• DRIx window contacts of a room cannot form the necessary AND connection. If a window contact with several channels is linked as partner, window-closed was already detected if only one channel of the window contact reported window-closed.
• Display error when switching between temperature and humidity. Every 60 seconds when updating the display, humidity is very briefly displayed, but then immediately jumps back to the actual temperature.
• Whenever connection to link partner FAL/MIOB/WHS2 is checked, the led is blinking. If the wall thermostat is linked to a FAL/MIOB/WHS2, the link connection is checked every 50 minutes as standard. This results in a flashing LED on the thermostat. Especially if the connection is made via a router, this flashing could take longer. This should not be the case as it will cause confusion for customers. The LED should only be triggered when the customer makes manual changes.

** New Feature

• Extension by boiler and pump channel for direct control via Multi IO Box and Switch Actuator for heatings system. The expansion allows the heating system to be controlled even if the central unit fails. The direct links ensure reliable operation even in offline mode.
• Switchover for use either as thermostat or as hygrometer (2-point control) with effect on the actor channel. Via the parameter setting it is now possible to switch the actuator channel 5 depending on the humidity.

** Improvement

• Parameters for switching between PWM and 2-point-control for floor heating control. It is now possible to select via a parameter whether the control of the underfloor heating is carried out using the previously used PWM control or whether the control is realised with a 2-point control.
• Whenever connection to link partner FAL is checked, the led is blinking. If the wall thermostat is linked to a FAL or FALMOT, the link connection is checked every 50 minutes as standard. This results in a flashing LED on the thermostat. Especially if the connection is made via a router, this flashing could take longer. This should not be the case as it will cause confusion for customers. The LED should only be triggered when the customer makes manual changes.
• The time information telegram does not contain a note about the summer / winter time change. So it was possible that a time request to the access point in the period where the changeover from summer to winter time takes place could lead to a double changeover.
• Automatic switching between heating and cooling at the two-point control for actuator channel 5. Up to now, the parameter "Art der Zweipunktregelung" was used to specify whether the two-point control for the actuator channel 5 should heat or cool. This parameter has now been extended by the value heating and cooling. If this value is now selected, the two-point control is automatically changed to heating or cooling.
• Smart RX FAL cyclic packet reduction To reduce the radio load, a check is made before each cyclic data telegram is sent to the FAL or FALMOT to determine whether it actually has to be sent. If there has been no change in the mode, the actual temperature, the humidity and the set temperature, the packet does not have to be sent every cycle.

Version 2.6.000 - 2019-09-04

** New Feature

• Improvement for data communication. If possible the device send multicasts only to PARTNER_ALL_WIRED_DEVICES instead of to PARTNER_ALL_DEVICES.

** Improvement

• Immediate evaluation of temperature change for the two-point-control. Temperature changes triggered by the central unit or a window contact, are forwarded directly to the switching actuators for the two-point-control.

Version 2.4.008 - 2019-03-07

** Modification In "Duration" replace the unit "Days" by "10ms". Revision of the current duration, becaues a 16 bit value are not needed as unit "Days" anyway.

** Improvement Adjustment of the LCD start display In the future only the application version major minor will be shown in the LCD start display. All further information can be found in the app or the ccu.

Version 1.2.004 - 2017-11-23

** Bugfix

• Logic "Window open temperature" corrected in cooling mode In cooling mode, it is not advisable to change to the window open temperature, as a result, more cooling would have to be used.
• Correction in Paging-Module HMOS-Library Catched erros which could occure after an OTAU update to a newer paging module.
• Correction for the Optimum Start Stop function After activating the optimum start stop function it is now executed correctly.
• Antenna symbol synchronization in the display. If the date and time can be requested by the access point, this is a sign that the radio communication is in order. The flashing of the antenna symbol should then be canceled.
• Correction for set point temperature update after weekprogram configuration. If window open is detected (extern/intern) and during this time a new week program is transmitted to the device, the device updated the set point temperature after window close by using the new week program set point temperature.
• Correction when changing from auto mode to manu mode. When changing from auto mode to manu mode and boost is active, boost is abort.
• Function modification after removing internal link between channel 8 and channel 10. When removing the internal link between channel 8 and channel 10 by the access point, the relay should be deactivated.
• Behavior after aborting the factory reset. If the factory reset is aborted or not executed until the end, the device performs a reboot after the termination or after the timeout.
• Abort of Quick Veto by "Duration = 0". If Quick Veto is active, Quick Veto can be aborted by the radio command "Duration = 0". The device answers the radio telegram with an "Ack".
• Error when changing from winter to summer time. On the day of the time change, the time is increased by one hour every full hour after 2 o'clock.

** New Feature

• Parameter extension for installer solution. With the help of the new parameter "DISABLE_MSG_TO_AC" all transmissions to the central address are suppressed. Also to the status receiver address if this is the same as the central address.

** Modification

• Function modification of Optimum-Start-Stop Change to Optimum Start, means that the comfort temperature should be reached at the desired point in time, the lowering temperature not.
• Function modification during two-point control. During the two-point control (startup sequence), the device do observe the parameter values "COOLING_DISABLE" and "HEATING_DISABLE".

** Improvement

• Improvement for the display. When changing the temperature offset from the App the LCD display should be updated directly.
• Expansion for inclusion condition. If parameter changes have been made to the device before the inclusion, the device can only be included if a factory reset has been performed on the device before.
• Extension for the Quick Veto Function. If the quick veto function is active, the remaining time is transferred in the status telegram.

Version 1.0.011 - 2017-05-12

** First release

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