Horstmann Controls
Horstmann Channelplus H27XL Series 2 Two Channel Programmer
A two-channel 7-day heating and hot water programmer with independent scheduling, holiday mode and long-life battery backup.
At a glance
- Also known as 4210050
AvailabilityCall for price
Availability: no longer made. Call us and we'll check for stock.
Replaced by C1727
No longer made: call us
The manufacturer has discontinued this part. Our team will check for remaining stock or a suitable replacement.
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30-day returns
Unused, in original packaging.
What it is
The Horstmann Channelplus H27XL Series 2 is a two-channel programmer giving independent time control over central heating and hot water on a 7-day programme, with up to three on/off periods per channel each day. It has a backlit, menu-driven display and is a direct replacement for the older Horstmann 425 Diadem, Tiara and H527 models.
Signs this part needs replacing
- One channel stops switching while the other continues to work
- Holiday function fails to hold its setting
- Unit loses its programme or clock after a power cut (battery depleted)
- Display blank, dim or buttons unresponsive
Before you order
- Confirm the wall-mounting plate and wiring match your existing two-channel unit
- Note this model directly replaces the 425 Diadem, Tiara and H527
- Isolate the electrical supply before removing or fitting
- This is a mains-wired control, so fitting should be carried out by a competent person
Compliance
| Barcode / EAN | 5015914355011 |
|---|---|
| Alternative numbers | 4210050 |
No fitment data held for this part.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.