To adjust the temperature on a Junkers TRQ temperature controller, you will need to first press the "SET" button to enter the setting mode. Then, use the arrow buttons to navigate to the desired temperature setting. Once you have reached the desired temperature, press the "SET" button again to confirm and save the new setting. Finally, exit the setting mode by pressing the "SET" button one more time. **

To set the time on the Junkers TRQ 21, you will need to locate the control panel on the front of the unit. Press the "SET" button to enter the time setting mode. Use the "+" and "-" buttons to adjust the hours and minutes to the correct time. Once the time is set, press the "SET" button again to save the changes. The display should now show the updated time. **

There could be several reasons why the Junkers gas boiler and TRQ 21 thermostat are not restarting. It could be due to a malfunction in the boiler's ignition system, a problem with the thermostat's wiring or settings, or a lack of power supply to the boiler. It's also possible that there is an issue with the gas supply or pressure. It's best to consult a qualified technician to diagnose and fix the problem. **

To fill water into the Junkers TRQ 1 of the Bosch Group, you will need to locate the water inlet valve on the unit. Turn off the power supply to the water heater before proceeding. Connect a hose to the water inlet valve and slowly turn on the water supply to allow the tank to fill. Once the tank is filled, you can turn the power supply back on and the water heater should be ready for use. **

Yes, it is possible to exchange the Junkers TRQ 21 for the Siemens REV24, as long as both thermostats are compatible with your heating system. Before making the exchange, it is important to check the specifications and compatibility of the Siemens REV24 with your heating system to ensure a smooth transition. Additionally, it is recommended to consult with a professional HVAC technician to ensure proper installation and functionality of the new thermostat. **

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