Baxi
Baxi PCB CB-21 7845954
Printed circuit board PCB CB-21, part 7845954, for the Baxi ASHP Control IDU1WH indoor unit.
At a glance
- Also known as 2204172
£48.67
£40.56 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 Baxi PCB - CB-21 (part number 7845954) is a printed circuit board used in the Baxi ASHP Control IDU1WH indoor unit. It carries the board-level control electronics the appliance relies on to run and respond to demand. Replacement is made by part number.
Signs this part needs replacing
- The indoor unit fails to power up or shows no display.
- Persistent fault codes that clear only briefly or not at all.
- The appliance does not respond to the controller.
- Visible damage, discolouration or burn marks on the board.
- Intermittent running or unexplained shutdowns.
Before you order
- Confirm the part number printed on the existing board matches 7845954.
- Confirm the appliance is a BAXI ASHP Control - Idu1WH.
- Isolate the power supply before removing or fitting the board.
- Check whether the fault lies with the board rather than a fuse, sensor or wiring.
Compliance
| Alternative numbers | 2204172 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI ASHP CONTROL - IDU1WH | — | — | — |
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.
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