Honeywell
Honeywell Programmer 7 Day 2 Channel ST9400C1000
Honeywell ST9400C1000 7-day two-channel programmer for domestic heating and hot water control, 230 V, 99 x 145 x 35 mm.
At a glance
- Part type: Programmer
- Also known as 4201085
£147.70
£123.08 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Honeywell ST9400C1000 is a two-channel, seven-day programmer used to control domestic central heating and stored hot water. It holds a weekly switching schedule and operates the boiler and zone valves so that heating and hot water run to independent time programmes. It is a mains-powered control from Honeywell's residential heating controls range, housed in a white plastic case designed for wall mounting.
Signs this part needs replacing
- The display is blank or unreadable while the mains supply is present.
- Buttons do not respond, or programme settings will not save.
- Heating or hot water fails to switch on or off at the times set.
- The clock loses time or resets after a power interruption.
- The unit chatters audibly, or boiler demand becomes intermittent.
Before you order
- Confirm the part number on the existing programmer and check it against the compatibility list before ordering.
- Note the wiring at each terminal before disconnecting the old unit, and check the backplate arrangement matches.
- Isolate the mains supply at the fused spur before removing or fitting the programmer.
- Have the boiler model and serial number to hand when confirming the correct control for the installation.
Mechanical
| Part type | Programmer |
|---|---|
| Material | Plastic |
| Width | 145mm |
| Height | 99mm |
| Depth | 35mm |
| Colour | White |
Performance
| Voltage | 230 V |
|---|
Compliance
| Manufacturer part number (MPN) | ST9400C1000 |
|---|---|
| Barcode / EAN | 5025121388412 |
| Commodity code | 9107 00 00 00 |
| Alternative numbers | 4201085 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| HONEYWELL RESIDENTIAL PRODUCTS | — | — | — |
Documents & drawings
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No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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