HONEYWELL ST9400C Thermostat Programmer. 7, 2-Channel, 3 on/Off per Day, 24 V, White, 1

Product Information

As Boilers and radiators are installed by third parties, they do have to install in compliance with regulations and manufacturer standards to get the full benefit of the warranty. Power Supply Examination: Without a detailed circuit diagram for the ST9400C, another expert suspected that the problem might lie in the power supply section of the device. The 48-volt supply, which typically involves a capacitor and diode, might be malfunctioning due to capacitor failures. Certain capacitors can lose their functionality when they remain un-polarised, leading to the deterioration of the dielectric surface. Replacing the capacitors may be a potential solution. Replacement: A straightforward solution proposed by several experts is simply to replace the malfunctioning programmer. Given the age of the device and the persistent issues, sometimes, it’s more efficient to replace rather than repair. As this information is anonymised and aggregated it cannot be used to identify any individual user actions.

Honeywell ST9400C user manual (English - 1 pages) Honeywell ST9400C user manual (English - 1 pages)

On each product, under the specification tab, you will find more information on the guarantee or Warranty. The Honeywell Home ST9400C is a 7-day twin channel programmer designed for independent control of heating and stored hot water in complete systems, enabling maximum energy efficiency. It offers up to three ON/OFF switchings per day, plus each day can be programmed differently on a 5/2 or 1 day basis making it ideal for users whose heating needs vary from day to day. programme is set for heating 7-9am, 6-9pm . on warmer ams, can turn off heating at 7.30 or 8am using overide? Routine Maintenance: It’s essential to consider the health of the entire system. Even if the programmer is replaced or repaired, ensure that the boiler undergoes routine servicing as indicated in its manual. Neglecting regular maintenance can lead to a cascade of issues in the future.should I touch the thermostat from 20degrees to 18degrees ? What is best to save energy? switching off rooms not used? ST9400C is a 7 day programmer with up to three on/off switching per day and holiday function. (Direct replacement for ST6400 models). The user sought advice on potential next steps, wondering if the issue lay with the programmer or another component in the system. If I want extra hour of heating at 5pm I press 1extra hour, This I did but by 7.30pm boiler switched itself off. What then should I do? supposing I need 2 hours extra, do I press '1 hour' at 4pm, then again at 5pm, "1 hour"

HONEYWELL ST9400C Thermostat Programmer. 7, 2-Channel, 3 on

All our products are guaranteed for a minimum of 1 year (radiators vary - see individual product specifications, copper tube 25 years) but many offer longer warranties from the manufacturer, which you may need to register for.