Today a leading supplier to aerospace, automation, control and transportation industries throughout the world, Honeywell’s origins were in the area of heating controls, a market which they still dominate today. With its advanced features and durable construction, it offers homeowners precise control over their energy usage, enhancing comfort and convenience while minimizing wastage. Finance is provided by PayPal Credit (a trading name of PayPal UK Ltd, Whittaker House, Whittaker Avenue, Richmond-Upon-Thames, Surrey, United Kingdom, TW9 1EH). The ST9400A has a large backlit LoT display which provides text feedback with help and programming hints as well as automatic summer/winter 1 hour change and a choice of 3 different built in programmes. All ST9400 models incorporate the Line of Text (LoT) display that gives clear plain English instructions whenever any button or slider is used.

This document is to be left with the user and forms part of a Home Information Pack WHAT IS A PROGRAMMER? Choosing the right Honeywell Home Electronic Programmer 24 Hour ST9400A1002, is an important decision, and it's one we're sure to help you get right. The heating and hot water programmes are completely independent to allow the system to be operated in the most energy efficient manner possible. This feature enables homeowners to effectively manage their energy consumption, reducing wastage and optimizing efficiency.It can be used for combi boilers, heating zones or any application where small electric loads need switching. In the Winter the Central Heating is set to Once a day (the Heating being controlled by the room state) - early morning to late at night, the Hot Water remains on its Auto setting. The programmer is a 1 day programmer with two on/off switching times per day and can be used for, combi boilers, heating zones or any application where small electric loads need switching. The better your problem and question is described, the easier it is for other Honeywell owners to provide you with a good answer.

Heating and hot water systems based on boilers account for of this fi gure, so it is important to understand how your controls can help to maximize energy effi ciency while maintaining your comfort. The unit has independent controls to Override the time switch setting (turn On when Off or Off when On) and also Boost to just give 1 - 3 hours extra On time. Features Easy to use slider and buttons combined with ‘LoT’™ Technology and an ‘OK’ button , allows you to confi rm changes and stay in control. The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products. The Honeywell ST9400A offers a user-friendly interface, allowing homeowners to easily program and adjust the temperature settings according to their preferences.The ST9400A does not directly control the temperature but works together with other temperature controls, such as room thermostats and cylinder thermostats, to control your heating and hot water system in your home. All ST9400 models incorporate the Line of Text (LoT™) display that gives clear plain English instructions whenever any button or slider is used. Is the Installer set-up programme for the ST9400A programmer always available to change parameters, even after set-up was completed a couple of years back, or is it a one time setting following a new installation ? They help us to identify popular products and understand your browsing habits so we can display relevant adverts to you. You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice.

The unit came with the time and date already set, it had also been programmed, so it was ready to go. Extra Large LCD (Liquid Crystal Display) with Backlight provides added user friendliness and clearer viewing – even in the dark. Took a bit of time to work out how to remove the previous model but this fits on to the same backplate.

ST9400A is a two channel 1 day programmer with independent timing for control of heating and hot water zones.