Glow-worm
Glow-worm Hydroblock Pump 0010028801
Glow-worm hydroblock and pump assembly, part number 0010028801, for Compact and Micracom combi boilers.
At a glance
- Also known as 1388926
£104.59
£87.16 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 Glow-worm hydroblock pump (part number 0010028801) is a combined hydraulic block and circulating pump assembly used in Glow-worm combi boilers. It forms the central water circuit component, housing the pump that circulates primary water around the heating system and through the domestic hot water plate heat exchanger. It is fitted to Compact and Micracom models as listed below.
Signs this part needs replacing
- No heating or hot water, with the pump failing to run when demand is present
- Whining, grinding or rumbling noise from the pump area during operation
- Water weeping or dripping from the hydroblock body or pump housing
- Boiler locking out or cycling shortly after ignition on pump-related faults
- Pump head running hot or seizing, with no flow detected across the circuit
Before you order
- Confirm the boiler model against the fitment list above, as Compact and Micracom variants differ
- Check the existing component's part number marking before ordering
- Verify whether the appliance is the standard or P variant of the model
- Confirm the fault lies with the hydroblock or pump rather than an external control or sensor
Compliance
| Alternative numbers | 1388926 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| GLOWWORM COMPACT 24C | — | — | — | |
| GLOWWORM COMPACT 24C P | — | — | — | |
| GLOWWORM COMPACT 28C | — | — | — | |
| GLOWWORM COMPACT 28C P | — | — | — | |
| GLOWWORM MICRACOM 24C | 47-019-58 | 47-019-58 | — | — |
| GLOWWORM MICRACOM 28C | 47-019-59 | 47-019-59 | — | — |
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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