If the unit is a replacement for another controller which has a standard wiring backplate, then it can be replaced without the need to touch the wiring (Note: TURN OFF THE ELECTRICS TO THE UNIT BEFORE REPLACING) The unit can be programmed for up to 3 On-Off periods in a day (it comes set up for 2 periods). T echnologies Sarl, Ecublens, Route du Bois 37, Switzerland by its Authorised Representative Honeywell Inc. You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice. 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. This programmer did not need any rewiring as a replacement for my old Danfoss FP 715 programmer as it uses the same wiring base.

The Honeywell ST9400A offers a user-friendly interface, allowing homeowners to easily program and adjust the temperature settings according to their preferences. Honeywell are the leading supplier of domestic heating and combustion controls in the UK, and are a Fortune 100 company employing over 127,000 people worldwide. They appreciate the durability and reliability of the product, and find it to be good value for money.

Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item. Your Honeywell ST9400A provides timing control for both your central heating and hot water systems, letting you set ON and OFF periods to suit your own lifestyle.

Constructed with high-quality materials, this device promises a robust and trustworthy performance, ensuring its effectiveness over time. I have seen on some reviews that people complained that the clock as comes was 5 minutes slow, and they could not reset it. LoT™ Technology provides you with informative ‘on-screen’ feedback and operational assistance as and when required. 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.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). All ST9400 models incorporate the Line of Text (LoT™) display that gives clear plain English instructions whenever any button or slider is used. They mention that the programming is clear and concise, and the pre-installed settings are very sensible and similar to what they would normally use. With its advanced features and durable construction, it offers homeowners precise control over their energy usage, enhancing comfort and convenience while minimizing wastage. Please note that if the item requires testing your refund will take approximately 14 days from receipt at Adlink UK Limited.