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Siemens RDH100 Digital Thermostat - White

Siemens RDH100 Digital Thermostat - White

Siemens RDH100 Digital Thermostat with a large LCD display, battery-powered operation, and a simpl...

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Siemens Easy Electronic Room Thermostat with TPI RDH100 Energy Efficient Heating

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eBaySiemens Easy Electronic Room Thermostat with TPI RDH100 Energy Efficient Heating
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RS Components Ltd- UKSiemens RDH Wall Mount Thermostat, 90 x 120 x 26.9mm 1 Input, 1 Output Relay, 3 V dc Supply Voltage PID Controller
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Product Information

Full details

The Siemens RDH100 is a battery-powered digital thermostat designed for precise central heating control in homes and small commercial spaces. Its large LCD display and intuitive rotary dial make temperature management simple and efficient, with a clear indicator for heating demand. While offering accurate temperature control, it is important to note that this model is designed for heating systems only and does not support cooling functionalities.

All features

ColourWhite
Model Part NumberRDH100
BrandSiemens

Extended Product Information

FAQs

How do I set the desired temperature?

Simply turn the large rotary control dial on the front of the thermostat to your desired temperature between 5°C and 30°C.

What type of batteries does it use and how long do they last?

The thermostat uses 2 x AA alkaline batteries (1.5V). Battery life is approximately 1 year under normal operating conditions.

Is this thermostat suitable for air conditioning units?

No, the Siemens RDH100 is designed exclusively for heating systems and is not compatible with air conditioning or cooling systems.

How can I tell if the heating is on?

The thermostat features a heating demand indicator symbol on the LCD display that appears when the thermostat is actively calling for heat.

Does it have a programmable schedule?

No, the RDH100 is a non-programmable thermostat with manual temperature setting via the rotary dial. It does not support pre-set schedules.

What are the dimensions of the thermostat?

The dimensions are 120mm (Height) x 90mm (Width) x 26.9mm (Depth).

What does 'volt-free contacts' mean?

Volt-free contacts mean the thermostat's switching mechanism does not carry a voltage itself, making it safe to connect to a wide range of low-voltage heating system controls without risk of voltage incompatibility.

Troubleshooting

Thermostat does not power on.

Ensure 2 x AA batteries are correctly inserted with the proper polarity. Replace batteries if they are old.

Heating system does not respond.

Check that the thermostat is correctly wired to the heating system. Verify the heating demand indicator is active when a temperature is set. Consult the installation manual or a professional if unsure about wiring.

Inaccurate temperature readings.

Ensure the thermostat is not placed near heat sources (radiators, direct sunlight) or in drafty areas. Allow time for the room temperature to stabilize before checking readings.

Heating system runs constantly.

Verify the temperature set point is appropriate and not set excessively high. Check wiring connections for faults.

Pros and Cons

Pros

  • Easy to install and use with a simple interface.
  • Large, clear LCD display enhances readability.
  • Accurate temperature control for efficient heating.
  • Battery operation offers installation flexibility.
  • Heating demand indicator provides useful feedback.

Cons

  • Only suitable for heating systems; not for cooling.
  • Requires 2 x AA batteries (not included), adding an ongoing cost.
  • Basic functionality, lacking advanced programming features.
  • No memory function for settings in case of power loss (though battery-powered, this refers to internal settings retention).

Setup, Compatibility & Care

Setup:

  1. Battery Installation: Insert 2 x 1.5V AA alkaline batteries into the designated compartment. Ensure correct polarity.
  2. Mounting: Mount the thermostat on an internal wall, away from direct heat sources, drafts, or sunlight, typically at room height.
  3. Wiring: Connect the volt-free contacts to your heating system according to the wiring diagrams provided in the installation manual. This step is crucial and may require professional assistance for complex systems.

Compatibility:

  • Compatible with most low-voltage domestic and commercial heating systems (e.g., gas boilers, electric underfloor heating).
  • Features 5(2)A volt-free contacts.
  • Not suitable for cooling systems.

Care:

  • Clean the thermostat casing with a soft, dry or slightly damp cloth. Avoid abrasive cleaners or solvents.
  • Ensure the battery compartment is clean and dry.
  • Replace batteries annually or when the low battery indicator appears to maintain consistent operation.

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