Back to home page
|Listed in category:

Picture 1 of 4

Picture 1 of 4
Picture 2 of 4
Picture 3 of 4
Picture 4 of 4
Have one to sell?
Sell it yourself

Honeywell ST9400C Programmer 7-DAY/2-CHANNEL

dsmar5576
(436)
Registered as a private seller
Consumer protection regulations resulting from EU consumer law are therefore not applicable. eBay buyer protection still applies to most purchases.
Seller's other items
Contact seller
£23.30
or Best Offer
Condition:
Used
People are checking this out. 2 have added this to their Watchlist.
Pay less? Turn old devices into money with Trade In
Postage:
May not post to United States. Read item description or contact seller for postage options.
Located in: Hornsea, United Kingdom
Delivery:
Varies
Returns:
No returns accepted.
Payments:
    Diners Club

Shop with confidence

eBay Money Back Guarantee
Get the item you ordered or your money back. Learn moreeBay Money Back Guarantee - opens new window or tab
Seller assumes all responsibility for this listing.
eBay item number:226884889632
Last updated on 25 Jul, 2025 13:12:08 BSTView all revisionsView all revisions

Item specifics

Condition
Used: An item that has been previously used. The item may have some signs of cosmetic wear, but is ...
Brand
Honeywell
Type
Storage Tank Water Heater
Power Source
2 Chanel
Manufacturer Warranty
3 Years
Heating System
Boiler
MPN
ST9400C
Features
Programmable
Mounting Location
Wall
Smart Home Compatibility
Universal
Colour
White

Item description from the seller

About this seller

dsmar5576

100% positive Feedback•110 items sold

Joined Mar 2005
Usually responds within 24 hours
Registered as a private sellerThereby, consumer rights stemming from EU consumer protection law do not apply. eBay buyer protection still applies to most purchases.
Seller's other itemsContact

Seller Feedback (60)

All ratings
Positive
Neutral
Negative
  • -***l (519)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    Well packed and as described, thank you. I recommend this seller.
    Pair of Edinburgh Crystal Champagne Flutes - Boxed (#226007248587)
  • t***t (75)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    Very happy - thank you
    Darkroom kit for dodging and burning of B/W prints from the 50s / 60s antique (#226009042972)
See all Feedback

Product ratings and reviews

Learn more
4.8
320 product ratings
  • 274 users rated this 5 out of 5 stars
  • 32 users rated this 4 out of 5 stars
  • 7 users rated this 3 out of 5 stars
  • 1 users rated this 2 out of 5 stars
  • 6 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 262 reviews
  • by millmaag
    17 Jan, 2018Most favourable review

    Great features, easy to install

    I bought this to replace a Honeywell ST7100, that had failed after 20+ years of reliable service. I had to wire in a new backplate - but the new unit only needs four connections - mains live, mains neutral, a wire out to hot water and a wire out to central heating. No earth needed as it is double insulated. Not much more complicated than wiring a mains plug. The backplate is industry standard so, if this timer ever fails, I should be able to take it off the backplate and plug in any available timer, just like swapping a broken light bulb. Given that there are reports of the unit failing, I did consider getting a spare one - but they use a non replaceable back up battery that gradually runs down in storage, so decided to wait and see what happens and to get a brand new replacement if and ...

    Verified purchase: YesCondition: NewSold by: discount.heating

  • by blackdog7677
    22 Oct, 2020Most critical review

    Good product, poor quality control

    I bought this 'cos I thought Honeywell that will be quality. Arrived packaging intact. However the units case was not assembled correctly together; one of the case tabs was on the outside. Fortunately I was able to prise it open enough without breaking the case to get the tab inside the case and so correctly located. Easy install, easy configure, easy use.

    Verified purchase: YesCondition: NewSold by: borderspares

  • by bob.bell1000
    13 Dec, 2016

    Excellent Controller and ideal retrofit for 6400 series.

    I bought this to replace an existing ST 6400 controiller that had a failed back up battery. Replacement took only a matter of minutes and required no skills, special tools or rewiring. This is because Honeywell have made the 9400 fit the older 6400 backplate. You leave the backplate in place. You undo two captive screws at the base of the old unit. You hinge up the old unit (it is held on two tabs at the top) and lift it off. You fit the new unit over the tabs, hinge it down ands push into place and then tighten up the two screws. Connecting pins on the rear make contact with the connectors on the backplate. That's all. It now works. All that is required is to set the time and the programmes. It is similar to the old 6400 but has a much clearer display and this is backlit (you can set ...

    Verified purchase: YesCondition: NewSold by: heatright15

  • by mdea4561
    29 Nov, 2017

    st9400c

    I purchased the st9400c to replace a now defuct st6300a . had to remove and replace the backplate as the backplate of the st6300 is not compatible with the st9400 programmer, which came with its own backplate and was quite simple to do.with these programmers you always get a selection of pics of wiring diagrams and you just have to make sure the wiring arrangement and type of system you have is compatible eg 's'plan, 'y' plan etc. I have also replaced a st6400 with the same programmer.

    Verified purchase: YesCondition: NewSold by: ukbargainshop1

  • by jagxtype2013
    04 Apr, 2020

    Does what is required of it.

    It replaced a somewhat old Honeywell Programmer, which did not allow the flexibility that this type of Programmer does. Whilst there are other makes of similar capabilities, This particular make is a well established brand with high quality integrity.

    Verified purchase: YesCondition: New

More to explore: