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Honeywell ST9400C Programmer

Product Code: 88608

Rated 3.5 out of 5 by 21 reviewers.

Separate timing. 2-wire installation. Override facility. Holiday mode. Automatic BST/GMT time change. Boost function. Building Regulations compliant, WEEE, RoHS.

  • 7 Day Programmable
  • 1
  • 2
  • or 3 On/Off Periods per Day
  • Digital Display
  • Suitable for Gravity-Fed & Fully Pumped Systems
  • 3 Pre-Set Programmes
  • 2 Wire Installation
  • Backlit Display
  • Battery Back-Up
  • View more information

Product contents:
1 off ST9400C 2 channel heating programmer

Switching/contact rating: SPDT 3(3)A. H x W x D: 99 x 145 x 35mm. Backplate fit: Industry Standard. Suitable for underfloor heating.

Download more information...

Honeywell ST9400C Programmer Instruction Manual

£92.99 (inc. 20% VAT)

3.4762 5 21

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Page 1 of 4
Rated 5 out of 5 by CH/HW Controller Needed to replace my 25yr old ST7100. Changed back-plate followed wiring instructions, switched back on - worked. Screwfix not cheapest but available locally. Can't tell about reliability but would like to think this controller will also last 25yrs :) 14 Sep 2014
Rated 1 out of 5 by Didn't last I bought this thinking I was buying quality and reliability - none of it. Setting the programmes is amazing slow and clunky but I thought I could live with that. The unit has now failed after a little more than 2 years (obviously now out of warranty) so I have to buy a replacement - don't worry it won't be a Honeywell! 5 Nov 2013
Rated 1 out of 5 by Too unreliable I have three of these controllers installed to control different parts of the house. One failed after 1 year. The controller would turn itself off and then on again every few minutes. The second failed after 2 years, the relay only turns the heating on every now and again at the designated start up times. The product is easy to set up and contains some useful features but falls down on the most important quality you need from a controller, reliability. 21 Sep 2013
Rated 1 out of 5 by Too unreliable Lasted about 18months and has intermittent faults It's really annoying having no hot water when you need a shower or coming home/waking up to a cold house because it decided not to work today. 9 Sep 2013
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Download more info (pdf)

Brand Honeywell
Colour White
Manufacturer Guarantee 1 years
Manufacturing Standards Building Regulations Compliant, CE, WEEE, RoHS
Model No ST9400C
Pack Size 1
Product Depth 35 mm
Product Height 99 mm
Product Length 145 mm
Product Width 145 mm
Total Product Weight 0.268 kg