DuoFern 9485 - Thermostat RADEMACHER - Free user manual and instructions
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| Product Type | Wireless Room Thermostat |
| Brand | Rademacher |
| Model | DuoFern 9485 |
| Wireless Protocol | DuoFern (868 MHz) |
| Power Supply | 2 x AA batteries (1.5V) |
| Battery Life | Approx. 2 years |
| Display | LCD with backlight |
| Temperature Setting Range | 5°C to 30°C |
| Measurement Accuracy | ±0.5°C |
| Programming | Weekly schedule with up to 6 time periods per day |
| Functions | Frost protection, window open detection, holiday mode, manual override |
| Installation | Wall-mounted (screws included) or freestanding |
| Dimensions (W x H x D) | 80 x 80 x 25 mm |
| Weight (without batteries) | 120 g |
| Protection Class | IP20 |
| Ambient Temperature | 0°C to 50°C |
| Warranty | 2 years |
| Included Accessories | Mounting plate, screws, dowels, user manual |
| Compatibility | DuoFern receivers (e.g., Rademacher actuators) |
| Maintenance | Replace batteries when low; clean with dry cloth |
| Repairability | Battery replacement only; no user-serviceable parts |
Frequently Asked Questions - DuoFern 9485 RADEMACHER
How do I install the DuoFern 9485 thermostat?
Mount the thermostat on the wall using the included screws and dowels, or place it on a flat surface. Insert two AA batteries and pair with a DuoFern receiver by following the pairing procedure in the manual.
How do I pair the thermostat with a receiver?
Press the pairing button on the receiver until the LED flashes. On the thermostat, enter the menu and select 'Pairing'. Confirm to establish the connection. The LED will stop flashing when paired.
What is the battery life and how do I know when to replace them?
Battery life is approximately 2 years. The display will show a low battery symbol when replacement is needed. Use alkaline AA batteries only.
How do I set a weekly schedule?
Go to the 'Schedule' menu. Select a day, then set up to 6 time periods with desired temperatures. Repeat for each day or copy a day to others. Save the settings.
Can I override the schedule temporarily?
Yes, use the manual mode to adjust temperature directly. The override will last until the next scheduled time period, or you can set a fixed time for the override.
What does the window open detection do?
If a rapid temperature drop is detected (e.g., window opened), the thermostat will reduce heating to save energy. Heating resumes automatically when temperature stabilizes.
How do I activate holiday mode?
In the menu, select 'Holiday' mode. Set the date and temperature for the absence period. The thermostat will maintain the set temperature until the end date.
Is the thermostat compatible with all heating systems?
It works with DuoFern-compatible receivers. Ensure your heating system (e.g., underfloor heating, radiator valves) has a compatible DuoFern actuator.
How do I clean the thermostat?
Use a soft, dry cloth to wipe the surface. Avoid water, solvents, or abrasive cleaners. Do not spray directly onto the device.
What should I do if the display is blank?
Check batteries: replace them if needed. Ensure batteries are inserted with correct polarity. If still blank, press the reset button using a paperclip. If problem persists, contact support.
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