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.

ST9400C – User Guide - Wolseley

A user with a 12-year-old CH/Water system, equipped with an Ideal Icos HE18 boiler, a hot water cylinder, a pump, a 3-way motorised valve, and a Honeywell ST9400C programmer, encountered issues after accidentally puncturing a pipe. Certain capacitors can lose their functionality when they remain un-polarised, leading to the deterioration of the dielectric surface. Fill in the form below: forsupport with a product or service you already have or other company questions. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. The programmer's Line of Text (LoT) display gives clear instructions whenever any button or slider is used for simple, hassle-free use.As this information is anonymised and aggregated it cannot be used to identify any individual user actions.

Honeywell ST9400c Common Problems - Problems With Honeywell ST9400c Common Problems - Problems With

Regular maintenance and prompt attention to problems will ensure the longevity and efficiency of your system. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. If the system functions correctly without the programmer, it is likely that the programmer is faulty and needs replacing. The pump seemed to run correctly, and the motorised valve also appeared to function, but the programmer continued its on/off cycling. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development.Statistics cookies or "performance cookies" are used to collect information on how the site is used. Following the system’s repair and restoration, the Honeywell ST9400C began exhibiting signs of malfunction. To start operating the 7-day programmable thermostat and select the correct operating modes, read user guide, which contains 18 pages in English. They are used only by Mr Central Heating or the trusted partners we work with, where they are used for marketing, statistics and personalised ads. The better your problem and question is described, the easier it is for other Honeywell owners to provide you with a good answer.

Honeywell Home Product Support Centre | Resideo UK - Honeywell Home

If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page. Even if the programmer is replaced or repaired, ensure that the boiler undergoes routine servicing as indicated in its manual. Features user friendly text instructions (LoT™), large backlit display, automatic summer/winter change and override.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. The user sought advice on potential next steps, wondering if the issue lay with the programmer or another component in the system. 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. This article highlights a common problem faced by a Honeywell ST9400C user and provides potential solutions based on expert feedback.