Hamworthy
Hamworthy LPB Clip-In Module 533901456
Siemens OCI420A109 LPB clip-in module for Hamworthy Modumax and Purwell Variheat floor standing boilers, providing LPB bus communication.
At a glance
- Also known as 8912009
£159.44
£132.87 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 Siemens OCI420A109 is an LPB clip-in module that provides LPB bus communication on Hamworthy boilers. It is supplied under Hamworthy part number 533901456 and clips into the appliance control. It is used across the Hamworthy Modumax and Purwell Variheat floor standing ranges.
Signs this part needs replacing
- The boiler fails to communicate over the LPB bus with system controls
- Fault codes relating to bus communication appear on the boiler display
- The boiler does not respond to a cascade or external controller
- Intermittent communication faults that clear after a power cycle
Before you order
- Confirm your boiler model against the fit list above
- Check the existing module carries the Siemens reference OCI420A109
- Isolate the appliance from the electrical supply before fitting
Compliance
| Alternative numbers | 8912009 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| HAMWORTHY HAMWORTHY SPARE PARTS | — | — | — | |
| HAMWORTHY MODUMAX 110 FLOOR STANDING | — | — | — | |
| HAMWORTHY MODUMAX 125C FLOOR STANDING | — | — | — | |
| HAMWORTHY MODUMAX 220 FLOOR STANDING | — | — | — | |
| HAMWORTHY MODUMAX 250C FLOOR STANDING | — | — | — | |
| HAMWORTHY PURWELL VARIHEAT PV105HE FLOOR STANDING | — | — | — | |
| HAMWORTHY PURWELL VARIHEAT PV110C FLOOR STANDING | — | — | — | |
| HAMWORTHY PURWELL VARIHEAT PV125HE FLOOR STANDING | — | — | — | |
| HAMWORTHY PURWELL VARIHEAT PV140C FLOOR STANDING | — | — | — | |
| HAMWORTHY PURWELL VARIHEAT PV180C FLOOR STANDING | — | — | — |
Showing 10 of 14 compatible appliances.
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.
HAMWORTHY appliance manual — PURWELL VARIHEAT PV105HE FLOOR STANDING, PURWELL VARIHEAT PV125HE FLOOR STANDING, PURWELL VARIHEAT PV65HE FLOOR STANDING, PURWELL VARIHEAT PV85HE FLOOR STANDING
manualmanualHAMWORTHY appliance manual — PURWELL VARIHEAT PV110C FLOOR STANDING, PURWELL VARIHEAT PV140C FLOOR STANDING, PURWELL VARIHEAT PV180C FLOOR STANDING, PURWELL VARIHEAT PV70C FLOOR STANDING, PURWELL VARIHEAT PV95C FLOOR STANDING
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