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A Moccamaster that seems dead is usually doing exactly what it was told: the brewer switches itself off automatically at 100 minutes (KBGV Select specs), the drip-stop on the brew basket may be closed, and scale slows the 1475 watt heating element long before it kills it. Walk the water path from tank to carafe and the fault shows itself in five minutes.
From switch to carafe: the checks in order
| Symptom | Likely cause | Fix |
|---|---|---|
| Nothing at all | Auto-off already triggered, or switch off | Cycle the power switch; the machine turns itself off at 100 minutes |
| Element on, no water rising | Water below the pickup, or airlock in the glass tube | Fill the tank properly; reseat the outlet tube |
| Water rises, basket floods | Drip-stop closed or basket clogged | Open the drip-stop; check the paper filter is not folded over |
| Brews at a trickle | Scale on the heating element | Descale; on hard water this is a routine, not a one-off |
| Brews cold or stops early | Element or thermostat failing | That is a service case; the brewer carries a 5 year warranty |
Machine facts from us.moccamaster.com: 1.25 L / 40 oz / 10 cups, 1475 W, auto-off at 100 minutes, 5 year warranty. Checked August 2026.
The auto-off surprise
The most reported Moccamaster failure is not a failure. The brewer powers down 100 minutes after switch-on, by design. Come back mid-afternoon, press the switch, and a perfectly healthy machine looks dead until you cycle it. Check this before anything else, and check that the hotplate switch on two-switch models is not the one you toggled.
Scale is the only real enemy
The heating element is copper and the brew path is simple, which is why these machines run for decades. Scale is what gets them: it insulates the element, stretches brew time, drops the brew temperature out of the 196 to 205 F range the machine is built to hold, and eventually trips thermal protection mid-brew. If your brews have crept past their usual time, descale before anything else; the routine is in how to descale a Moccamaster.
The drip-stop and basket
If water rises and pools in the basket instead of reaching the carafe, the drip-stop is closed or gummed. It is a moving part and it wears; Moccamaster sells the basket and a drip-stop repair kit separately, covered in Moccamaster replacement parts. A folded filter paper produces the same flood with a healthy drip-stop, so eliminate that first.
Check current prices
The two consumables that keep a Moccamaster brewing:
Related reading
- Moccamaster replacement parts
- How to descale a Moccamaster
- Technivorm Moccamaster review
- Fix your coffee maker hub
FAQ
Why did my Moccamaster suddenly turn off? The brewer switches itself off 100 minutes after being turned on. That is the designed auto-off, not a fault. Cycle the power switch and it will run again.
Why is my Moccamaster brewing slowly? Scale on the copper heating element. It insulates the element and stretches brew time. Descale the machine; on hard water make it a regular routine.
Why does water pool in my Moccamaster brew basket? The drip-stop under the basket is closed or sticking, or the paper filter has folded against the wall. Open the drip-stop, refit the filter, and replace the basket or its repair kit if it keeps sticking.
Repair or replace: the free repair or replace calculator weighs the part cost against a new machine before you order anything.
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