Keurig K-Compact Not Working? 5 Fixes (K35)

Quick Fix First: Read the Three Size Lights

The Keurig K-Compact (K35) has one documented fault signal: its three size buttons. If all three light up and stay on, Keurig's guide says lift the handle, remove the pod, close the handle, put a large mug on the tray and press the power button once. The brewer may dispense hot water. If all three blink together, there's no owner fix: contact Keurig Customer Service.

Everything else on the K35 is ordinary upkeep: the reservoir's lock tabs, a filter screen at the base of the reservoir, the two needles, and a descale every 3-6 months. There's no Descale Mode button and no reset. This page follows Keurig's K35 Use & Care Guide (we read the Canadian French edition, so the wording below is our translation).

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Try This First

• ADD WATER lit? Fill to MAX FILL, not beyond, and refit the reservoir so its lock tabs engage.
• Lift and lower the handle completely. The three size buttons should blink. They switch off 60 seconds after you close the handle.
• Is it just off? The K35 turns itself off 2 hours after the last brew. Press power and the green light comes on.
• Just switched on? First heat-up takes about 4 minutes, and the brewer is ready when it goes quiet.

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What the Lights Mean

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Fix 1: Clear the "All Three Lights" State

1. Lift the handle and take out the K-Cup pod, if there is one.
2. Close the handle completely.
3. Put a large mug (10 oz / 295 ml minimum) on the drip tray.
4. Press the power button once. The brewer may dispense hot water.
5. Try your brew again.

If the three lights blink together instead, stop and call Keurig.

Time: 1 minute
Cost: Free
Difficulty: Easy

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Fix 2: ADD WATER With a Full Tank

1. Lift the reservoir lid off, then lift the reservoir straight up.
2. Fill with fresh water to MAX FILL.
3. Lower it until the lock tabs engage, and refit the lid.
4. If ADD WATER stays on after refilling, Keurig says to contact Customer Service. There's no sensor reset.

Time: 2 minutes
Cost: Free
Difficulty: Easy

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Fix 3: Rinse the Filter Screen at the Base of the Reservoir

The K35 guide has a step most Keurig guides don't: cleaning the filter screen at the bottom of the water reservoir.

1. Empty the reservoir.
2. Rinse the screen under the tap with a strong stream, or aim a sprayer at it.
3. Or put about 2 inches (5 cm) of water in the reservoir, swirl it, and empty it.
4. Refill with fresh water and refit the reservoir. Repeat if needed.
5. Rinse the reservoir thoroughly so no cleaning product is left in the water supply.

The reservoir and lid aren't dishwasher-safe. Wipe them with a damp, soapy, non-abrasive cloth, and don't dry the inside with a cloth (lint).

Time: 5 minutes
Cost: Free
Difficulty: Easy

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Fix 4: Clean the Needles for Short Cups or Grounds

Grounds in the cup, or a cup that comes up short, point first to the needles.

1. Turn the brewer off and unplug it.
2. Exit needle: lift the handle, grasp the top of the pod holder and push up from underneath to release it. Pull the funnel off. Push a straightened paper clip into the needle in the bottom of the holder.
3. Entrance needle: hold the handle up and push the paper clip into both holes under the lid. Move it around to loosen grounds.
4. Refit the holder using the two front grooves and snap it in.
5. Plug in, lower the handle and run two water-only brews, with no pod. Other models' needles: Keurig clogged needle.
6. Lifted the reservoir mid-brew? That's another partial-cup cause: refit it and run a rinse brew with no pod.

⚠️ Caution: sharp needles sit above and inside the pod holder. Keep your fingers out.

Time: 5-10 minutes
Cost: Free
Difficulty: Easy

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Fix 5: Descale Every 3-6 Months

Scale "can hinder brewer performance", and descaling every 3-6 months helps maintain the heating element. The K35 has no Descale Mode button, so it's the long procedure. Allow about 35 minutes.

1. Use a large ceramic mug, not a paper cup, and make sure there's no pod in the holder.
2. Turn the brewer off. Pour the whole bottle of Keurig Descaling Solution into the empty reservoir, then fill the bottle with water and add that too. Turn it on.
3. Lift and lower the handle and brew the largest size. Repeat until ADD WATER lights.
4. Leave the brewer on for at least 30 minutes. Then empty and rinse the reservoir.
5. Fill to MAX FILL with fresh water and run at least 12 rinse brews at the largest size, refilling once.

Heavily scaled? You may get a thin trickle or nothing, then the sound of air. Turn it off and unplug it, empty and rinse the reservoir, refill with fresh water and repeat the rinse. If it continues, leave it unplugged for at least 30 minutes.

If cups are still short after two descales, Keurig says to contact Customer Service.

Time: About 35 minutes
Cost: Keurig Descaling Solution
Difficulty: Easy

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When DIY Won't Work

• All three size lights blinking, ADD WATER that won't clear after refilling, or partial cups after two descales: contact Keurig. The K35 guide we read (Canada) prints 1-800-361-5628; in the US, Keurig's other guides print 1-866-901-BREW (2739).
• No power after checking the outlet: plug it into its own grounded outlet on its own circuit, then call.
• Not user serviceable: Keurig says the brewer can't be repaired by the owner beyond cleaning and maintenance. Limited one-year warranty.

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Prevention

• Rinse the reservoir's filter screen whenever you wash the reservoir.
• Descale every 3-6 months, sooner with hard water.
• Clean the needles whenever grounds appear.
• Use bottled or filtered water if your tap water tastes of chlorine or minerals, but not distilled.
• Store it upright and frost-free, with the reservoir empty. After freezing temperatures, let it warm up for at least 2 hours.

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FAQ

Does the Keurig K-Compact have a reset button?

No. The guide describes no reset. The closest thing is the "all three lights" step: remove the pod, close the handle and press power once. Blinking lights mean calling Keurig.

What sizes does the K35 brew?

Three: 6 oz (177 ml), 8 oz (238 ml) and 10 oz (295 ml). Use a mug of at least 10 oz. Take the drip tray out for a travel mug.

Why does my K-Compact keep turning off?

Auto Off switches it off 2 hours after the last brew to save energy. Press the power button to turn it back on.

Can the K-Compact reservoir go in the dishwasher?

No. Keurig says the reservoir and its lid must not go in the dishwasher. The drip tray can, on the top rack.

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Related Keurig Guides

• Keurig clogged needle
• Keurig add water light won't turn off
• Keurig not brewing a full cup
• Keurig error codes and lights

Sources: Keurig K35 Use & Care Guide (Canadian French edition, Guide d'utilisation et d'entretien).