Bambu Lab P1S Combo: problems, parts and running costs

Checked: 2026-10-05

Summary

The cost of running this bundle sits in filament and moisture rather than in repairs. The AMS in this box has no active drying, so nylon, PC and PETG taken from opened spools have to be dried elsewhere before they print, and Bambu’s own store points buyers to the newer AMS 2 Pro bundle for exactly that reason. [2] No independent test and no owner discussion were available for this bundle, so there is no reported failure rate to weigh, and the items below are documented limits, warranty exclusions and consumables rather than breakdown reports. Store pricing is also ambiguous: the product page sells four bundles and the displayed figure could not be tied to this one. [2]

Common problems and fixes

The AMS does not dry filament — moisture-sensitive material straight from an opened spool is the practical problem with this bundle. Bambu’s store states the P1S AMS 2 Pro Combo has better value because of its active filament drying function, which means this AMS has none. [2] Workaround: dry spools in a separate dryer before loading, or buy the drying bundle. Not a defect, so no warranty involvement.
Only 250 mm of the nominal 256 mm build height prints by default — Bambu Studio caps default printable height at 250 mm to prevent heatbed damage from collisions, and using the remaining 6 mm requires a separate wiki procedure. [2] Fix: follow that procedure, or size parts to 250 mm.
Fiber-reinforced filament is not supported on stock hardware — Bambu states it is not recommended to print glass-fiber or carbon-fiber filament before an extruder and hotend upgrade is done. [1] Workaround: fit the upgrade first, or stay on unfilled filament; abrasive filament also wears the included 0.4 mm stainless nozzle.
Third-party parts and modified firmware void coverage — the warranty is void for damage caused by third-party accessories, for damage caused by unofficial firmware or firmware-modification tools, and for damage caused by skipping the maintenance intervals in Bambu’s Maintenance Guides. [3] Fix: keep official firmware and receipts from Bambu or an authorized distributor, since only those receipts are valid.
The published US power rating is self-contradictory — the parameter table lists 1000 W @ 220 V and 350 W @ 110 V on the same line, and 350 W is not plausible for a 100 °C bed and 300 °C hotend. [2] Fix: check the P1S TDS sheet before sizing a circuit or estimating electricity.
Four spools, not 16 colors — one AMS feeds four spools; the 16-color figure needs four AMS units stacked, and this bundle includes one. [1][2] Fix: add AMS units if the color count matters.
Returns get refused over missing extras or cosmetic marks — returns are refused when accessories, cables, filaments or manuals are missing, or when the unit shows cracks, dents or scratches; shipping damage must be reported within 7 calendar days of delivery. [3] Fix: photograph the unit and keep every cable and spool before returning it. The window is 30 days, extended from 14. [3]

Parts and consumables

Build plates (Bambu Textured PEI Plate, Cool Plate, Engineering Plate, High Temperature Plate) — all four are listed as compatible and none carries a published store price in the files reviewed; they are replaced when the surface wears or when a job needs a different finish. [2]
0.4 mm stainless steel nozzle — one is included; 0.2 / 0.6 / 0.8 mm are optional, and a hardened nozzle is the option for abrasive filament. No nozzle prices were published. [2]
AMS desiccant — the AMS keeps open spools dry with desiccant, which is listed as a standing ownership cost; Bambu does not price it on the pages reviewed. [2]
AMS filament cutter — the Combo ships a spare cutter alongside the fitted one; no replacement price was published. [2]
Filament — four spools feed one AMS, and the box includes two random-color sample spools. PLA, PETG, TPU, PVA, PET, ABS and ASA are ideal on this machine, with PA and PC capable. [2]
Unclogging pin tool — included in the box for hotend maintenance. [2]

Yearly running cost

Not enough data. The running inputs are identified — filament, electricity, AMS desiccant and the AMS feed path, plus spare nozzles — but no per-year dollar figure can be computed from them, because the files reviewed publish no prices for those items and the electricity side is blocked by the unresolved 110 V wattage. [2]

When it is a good buy

The US store page shows four bundles on one listing: P1S, P1S AMS Combo, P1S AMS 2 Combo and P1S AMS 2 Pro Combo. That page displayed $579.00 USD on 2026-10-04, but the fetched text did not establish which variant that figure belongs to, so confirm the price for this exact bundle on the store page before deciding. [2]

Alternatives, and when each one fits better:

P1S AMS 2 Pro Combo — the better choice for nylon, PC, or PETG that sits in opened spools, because Bambu names its active filament drying as the reason it is better value. [2]
X1C — the better choice when first-layer and spaghetti detection matter; its micro lidar AI detection is absent on the P1S, per Bambu’s own comparison. [1]
P1P — the better choice for PLA and PETG work with no enclosure need; it is the open-frame version of the same platform at 9.65 kg net, and a P1P-to-P1S upgrade kit exists. [1][2]