Sime
Sime Pressure Switch HUBA 602.99.05
Air pressure switch for Sime Murelle and Superior boilers, built around the HUBA 602.99.05 switch body.
At a glance
- Also known as 2040908
£34.81
£29.01 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
This is a pressure switch manufactured by Sime and built around the HUBA 602.99.05 switch body. It is an air pressure switch used on Sime gas boilers, where it monitors the pressure signal from the fan and flue system as part of the appliance's safe start-up and running sequence.
Signs this part needs replacing
- The boiler locks out on start-up with the fan running but no ignition sequence following.
- Repeated lockouts that clear on reset and then return shortly afterwards.
- The boiler fires intermittently or drops out mid-cycle without a demand change.
- Fan proving faults flagged by the appliance, pointing to a pressure signal that is not being made.
- The switch shows signs of contamination, perished tubing or a stuck diaphragm on inspection.
Before you order
- Confirm the appliance model and, where shown on the data plate, the serial or part reference.
- Check the existing switch marking to confirm it carries the HUBA 602.99.05 reference.
- Inspect the sensing tubes and connections first, as blockages or splits can mimic a failed switch.
- Verify the fault is the pressure switch and not the fan or flue path before replacing parts.
Compliance
| Alternative numbers | 2040908 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SIME MURELLE 20 TX CE IONO MET - 8076909 | — | — | — | |
| SIME SIME MURELLE CE | — | — | — | |
| SIME SIME SUPERIOR 60 MKII | — | — | — | |
| SIME SIME SUPERIOR 75 MKII | — | — | — | |
| SIME SUPERIOR 60 MKII - 8098102 | 41-719-12 | 41-719-12 | — | — |
| SIME SUPERIOR 75 MKII - 8098103 | 41-719-13 | 41-719-13 | — | — |
Documents & drawings
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