EPG2 Software Download
Please download this file to a USB-memory and follow the instructions in the manual to update the boiler.
If your boiler is connected to the internet it is also possible to download and install the update from within the boiler.
epg2-1.7.2-0-gf5875fd-20250911110322.swu
Changelog
The following is a list of the most important changes in each official software release.
If your system is running well there is normally no need to upgrade, but new features are continously added and bugs are fixed as they are found.
Releases marked RECOMMENDED fixes bugs that can potentially cause stability issues, and it is therefore recommended to upgrade to the latest RECOMMENDED update.
1.7.2 2025-09-11
- Bug fix: Solves case where DPC mode is enabled, but not installed, and causes slow down of the GUI
1.7.0 2025-09-10 *** REOMMENDED UPDATE ***
- Bug fix: Events/logging module sometimes used 100% CPU and caused user interface to freeze at start
- Reduced log volume for temperatures and system status allows better analysis
- Pump and Fan outputs can be controlled externally via Modbus/BACNet
- NTP server connection improved. Can use IP-adress as well as hostname. Use one boiler as NTP server for others
- Relay counters are now 2x16bit and has been moved to new modbus indices
- Various improvements and fixes
1.6.6 2025-08-18
- Bug fix: Static/DHCP settings were not always stored and/or shown correctly on screen.
- DPC mode can now be activated without delay via Modbus/BACNet
1.6.5 2025-08-14
- Bug fix: Installed power setting allowed one step higher than selected. Uses correct value now.
- Timezones: Support for European cities with automatic daylight saving switching.
1.6.4 2025-07-02
- Analog input cable loss detection can now be turned off also for 4-20mA input mode
1.6.3 2025-06-30
- Bug fix: Measured power was not displayed properly on screen and over modbus
- Bug fix: Measured power now takes line voltage into account also for other models than 400V
- Analog input cable loss detection now treats high impedance, non-driving, sources as no signal. Can also be turned off completely
1.6.2
1.6.1
- Production testing improvements
1.6.0 2025-06-19 *** RECOMMENDED UPDATE ***
- Safety function: Warning if analog inputs lose signal when in use
- Safety function: Watchdog timer for Modbus/BACNet communication. Selectable time and turns off contactors on timeout.
- Relay balancing on smaller boilers, extendes life span of relays
- Local web mirror, shows what's currently on the screen
- Screenshot function now also works with popups, mainly for streaming to log server and local web mirror
- USB drives with spaces in the names now work. Also solved issue causing Windows to scan disk every time
- Modbus can handle negative integers
- Shortened startup time and more responsive GUI
- Reworked network settings
- Various other minor bugfixes and improvements
1.5.3 2025-04-29 *** CRITICAL ***
- Fix potential boot problem on a few boilers. Not likely to affect any installed boiler at this point.
- User interface speed up, background data handling
1.5.2
- Production testing update
1.5.1 2025-04-24
- Fix rare issue with loading log files if power was turned off when saving.
1.5.0 2025-04-23 *** RECOMMENDED ***
- Varmebaronen 50 Year anniversary!
- Reworked Modbus RTU driver to support more servers at full speed
- Fix bug where power limits couldn't be increased on boilers with non-integer step sizes
- Add display of energy calclations
- Various minor fixes
1.4.10
1.4.9
1.4.8
1.4.7
1.4.6
- Production testing improvements
1.4.5 2025-03-25
- Fix bug in feature loading from USB, like DPC etc.
1.4.4 2025-03-19
- Add alert and status reporting via BACNet and Modbus, official documentation in v1.5.x
- Improve modbus startup
- Lowered CPU usage for background processes
- Introducing Finnish language translation
1.4.3 2025-02-26
- Updates to ease production testing
- Improved current reporting on busbars
1.4.1 2025-02-11
- Updates to ease production testing, no functional change
1.4.0 2025-02-06
- Correctly display currents over 125A
- German, Dutch and French translations
- UTK curve improvements
- Fix for analog input signal settings that under certain conditions stopped regulation
1.3.3 2025-01-09*** RECOMMENDED ***
- Standard regulation works together with external heater, like heat pump or pellet burner
- Fixed step size for various power limit related parameters
- Improved connection to Varmebaronen log server
- Analog output signals
- Config restore function
- Many more stability updates behind the scenes
1.2.1 2024-12-03
- Fix for Real Time Clock Battery Backup. Recommended update if the boiler is not connected to an internet time source.
1.2.0 2024-12-02 *** RECOMMENDED UPDATE ***
- Standard regulation fixed when working as backup to other heater
- Current measurement boards show 0A when no power is enabled
- Modbus handles negative values properly.
- Change to how emailed alerts work to match needed change on server
- General cleanup of texts and fields
1.1.1 2024-11-05
- Max absolute overtemp changed from 95 to 105C
1.1.0 2024-11-05 *** RECOMMENDED UPDATE ***
- Fixed bug in log/config handling that could cause freeze up if too many events were requested
- Fixed bug that could cause crash if selecting relative overtemp in DPC mode
- Update page is easier to understand now, without development data
- Fixed timestamps for alerts on home screen
1.0.2 2024-11-01
- Update buttons were not always enabled even though updates were available
1.0.1 2024-11-01 *** CRITICAL ***
- Green alerts stopped regulation.
1.0.0 2024-11-01
- First official release
If your system is running well there is normally no need to upgrade, but new features are continously added and bugs are fixed as they are found.
Releases marked RECOMMENDED fixes bugs that can potentially cause stability issues, and it is therefore recommended to upgrade to the latest RECOMMENDED update.
1.7.2 2025-09-11
- Bug fix: Solves case where DPC mode is enabled, but not installed, and causes slow down of the GUI
1.7.0 2025-09-10 *** REOMMENDED UPDATE ***
- Bug fix: Events/logging module sometimes used 100% CPU and caused user interface to freeze at start
- Reduced log volume for temperatures and system status allows better analysis
- Pump and Fan outputs can be controlled externally via Modbus/BACNet
- NTP server connection improved. Can use IP-adress as well as hostname. Use one boiler as NTP server for others
- Relay counters are now 2x16bit and has been moved to new modbus indices
- Various improvements and fixes
1.6.6 2025-08-18
- Bug fix: Static/DHCP settings were not always stored and/or shown correctly on screen.
- DPC mode can now be activated without delay via Modbus/BACNet
1.6.5 2025-08-14
- Bug fix: Installed power setting allowed one step higher than selected. Uses correct value now.
- Timezones: Support for European cities with automatic daylight saving switching.
1.6.4 2025-07-02
- Analog input cable loss detection can now be turned off also for 4-20mA input mode
1.6.3 2025-06-30
- Bug fix: Measured power was not displayed properly on screen and over modbus
- Bug fix: Measured power now takes line voltage into account also for other models than 400V
- Analog input cable loss detection now treats high impedance, non-driving, sources as no signal. Can also be turned off completely
1.6.2
1.6.1
- Production testing improvements
1.6.0 2025-06-19 *** RECOMMENDED UPDATE ***
- Safety function: Warning if analog inputs lose signal when in use
- Safety function: Watchdog timer for Modbus/BACNet communication. Selectable time and turns off contactors on timeout.
- Relay balancing on smaller boilers, extendes life span of relays
- Local web mirror, shows what's currently on the screen
- Screenshot function now also works with popups, mainly for streaming to log server and local web mirror
- USB drives with spaces in the names now work. Also solved issue causing Windows to scan disk every time
- Modbus can handle negative integers
- Shortened startup time and more responsive GUI
- Reworked network settings
- Various other minor bugfixes and improvements
1.5.3 2025-04-29 *** CRITICAL ***
- Fix potential boot problem on a few boilers. Not likely to affect any installed boiler at this point.
- User interface speed up, background data handling
1.5.2
- Production testing update
1.5.1 2025-04-24
- Fix rare issue with loading log files if power was turned off when saving.
1.5.0 2025-04-23 *** RECOMMENDED ***
- Varmebaronen 50 Year anniversary!
- Reworked Modbus RTU driver to support more servers at full speed
- Fix bug where power limits couldn't be increased on boilers with non-integer step sizes
- Add display of energy calclations
- Various minor fixes
1.4.10
1.4.9
1.4.8
1.4.7
1.4.6
- Production testing improvements
1.4.5 2025-03-25
- Fix bug in feature loading from USB, like DPC etc.
1.4.4 2025-03-19
- Add alert and status reporting via BACNet and Modbus, official documentation in v1.5.x
- Improve modbus startup
- Lowered CPU usage for background processes
- Introducing Finnish language translation
1.4.3 2025-02-26
- Updates to ease production testing
- Improved current reporting on busbars
1.4.1 2025-02-11
- Updates to ease production testing, no functional change
1.4.0 2025-02-06
- Correctly display currents over 125A
- German, Dutch and French translations
- UTK curve improvements
- Fix for analog input signal settings that under certain conditions stopped regulation
1.3.3 2025-01-09*** RECOMMENDED ***
- Standard regulation works together with external heater, like heat pump or pellet burner
- Fixed step size for various power limit related parameters
- Improved connection to Varmebaronen log server
- Analog output signals
- Config restore function
- Many more stability updates behind the scenes
1.2.1 2024-12-03
- Fix for Real Time Clock Battery Backup. Recommended update if the boiler is not connected to an internet time source.
1.2.0 2024-12-02 *** RECOMMENDED UPDATE ***
- Standard regulation fixed when working as backup to other heater
- Current measurement boards show 0A when no power is enabled
- Modbus handles negative values properly.
- Change to how emailed alerts work to match needed change on server
- General cleanup of texts and fields
1.1.1 2024-11-05
- Max absolute overtemp changed from 95 to 105C
1.1.0 2024-11-05 *** RECOMMENDED UPDATE ***
- Fixed bug in log/config handling that could cause freeze up if too many events were requested
- Fixed bug that could cause crash if selecting relative overtemp in DPC mode
- Update page is easier to understand now, without development data
- Fixed timestamps for alerts on home screen
1.0.2 2024-11-01
- Update buttons were not always enabled even though updates were available
1.0.1 2024-11-01 *** CRITICAL ***
- Green alerts stopped regulation.
1.0.0 2024-11-01
- First official release
(c)2025 Värmebaronen AB