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HORSTMANN C-Stat 17-B 7 Day Programmable Room Thermostat Instruction Manual

C-Stat 17-B | C-Stat 17-M  
User Instructions  
7 Day Programmable Room Thermostat  
Programmable room thermostats are widely recognised as one  
of the best ways in which to control central heating. Horstmann  
C-Stat programmable room thermostats have a large display  
and intuitive user interface, making them easy to set up and use.  
C-Stat uses a sophisticated time proportional integral (TPI)  
algorithm for accurate temperature control and energy  
efficiency.  
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GeneralDetails
NameHORSTMANN C-Stat 17-B 7 Day Programmable Room Thermostat Instruction Manual
MakeHorstmann
LanguageEnglish
FiletypePDF (Download)
File size0.63 MB
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HORSTMANN C-Stat 17-B 7 Day Programmable Room Thermostat Instruction Manual
Get the free PDF manual for the HORSTMANN C-Stat 17-B 7 Day Programmable Room Thermostat Instruction Manual and access setup steps, usage instructions, and troubleshooting tips. 👉 View online or download now to keep your thermostat running smoothly!

Horstmann C-Stat 17-B Manual: Questions and Answers

Can the Horstmann C-Stat 17-B be used to control individual room temperatures without additional equipment?

No. Install thermostatic radiator valves (TRVs) on individual radiators to achieve different temperatures in separate rooms. Instruction Manual, p. 3

What does the 'Until (time)' display on the Horstmann C-Stat 17-B indicate?

The time when the next temperature setting will take effect. Instruction Manual, p. 5

How do I change the clock format on the Horstmann C-Stat 17-B?

Access the Set Up menu and navigate to Select clock format to choose between 24 hour or AM/PM display.

  1. Press '-' or '+' until Set Up appears on the display.
  2. Press ENTER twice.
  3. Press '-' or '+' until Select clock format appears.
  4. Press ENTER.
  5. Press '-' or '+' to toggle between 24 hr and AM/PM options.
  6. Press ENTER to confirm your choice. Instruction Manual, p. 15

How do I enable or disable daylight saving on the Horstmann C-Stat 17-B?

Open the Set Up menu and select the Daylight Saving option to toggle between ON and OFF. The default factory setting is ON for automatic GMT/BST switching in the UK.

  1. Press '-' or '+' until Set Up appears on the display.
  2. Press ENTER twice.
  3. Press '-' or '+' until Daylight saving appears.
  4. Press ENTER.
  5. Press '-' or '+' to toggle between Daylight Saving On and Daylight Saving Off.
  6. Press ENTER to confirm your choice. Instruction Manual, p. 17

When should I replace the batteries in my thermostat?

At Stage 2, when 'Low Battery' appears in the display for 1 second each time you press a button. Stage 1 shows only a battery low symbol. By Stage 3, the unit switches off and displays 'Replace Batteries' permanently. Instruction Manual, p. 24

What does the battery symbol mean on my Horstmann C-Stat 17-B?

The battery low symbol in the display indicates Stage 1 warning. This is the first of three stages signalling declining battery power. Instruction Manual, p. 24

What's the battery life expectancy for Horstmann C-Stat?

Approximately two years with two standard AA alkaline non-rechargeable batteries. Instruction Manual, p. 23