Jura Won't Turn On? 4 Fixes (E6, E8, S8, Z10)

A Dead Jura Is Usually a Power Problem or a Cold One

If your Jura shows nothing when you press On/Off, start at the socket. JURA's E6, E8, S8, Z6 and Z10 manuals have one power control, the On/Off button, and no rear power switch, reset button or owner-checkable fuse. So a completely dark machine points to the outlet, the plug or the power cord. A machine that lights up but won't heat after a cold spell is the one case the manuals explain: Error 2 or Error 5.

The other thing that looks like "won't turn on" isn't a fault at all. A Jura that switched itself off after its set idle time, or one showing a message such as "Fill water tank" or "Empty drip tray", is on. It just won't make coffee until you deal with the message.

---

60-Second Checks

• Press the On/Off button firmly once, then wait. A Jura heats and rinses before it's ready, and "Machine is heating" and "Machine is rinsing" take a moment.
• Check the plug is fully in the wall socket. Try a lamp in the same socket to prove it's live.
• Check the cord at the back of the machine. On models with a plug-in power cord (the E6, E8 and Z6 manuals mention it), the cord must be pushed firmly into the machine as well.
• Read the display. If it shows a message, the machine is on. See Fix 4.
• Think about temperature. Was the machine delivered in winter, stored in a garage or moved in a cold car? That's Fix 3.

---

Fix 1: Prove the Power Supply (Works About 40% of the Time)

With no reset or fuse for owners to check, the power path is the first and most likely suspect. Every link has to be sound: the socket, the plug, the cord and, on plug-in models, the connector at the back of the machine.

Signs it's this one: no display, no lights and no sound at all when you press On/Off.

1. Plug a lamp or phone charger into the same socket. If it doesn't work, reset the breaker or use another socket.
2. Push the Jura's plug fully into the socket. It has a 3-pin grounded plug. JURA says never to modify it.
3. On a plug-in cord model, pull the cord out of the back of the machine and push it back in firmly.
4. Check the voltage on the name plate, on the underside of the machine. US models are 120 V, 60 Hz.
5. Look along the cord. If it's damaged, don't use the machine. JURA warns a defective cord is a shock hazard.
6. For the test, plug the Jura straight into the wall rather than a power strip.

Time: 5 minutes
Cost: Free
Success Rate: About 40%
Difficulty: Easy

---

Fix 2: Wake It Up After Auto Switch-Off (Works About 25% of the Time)

Jura machines switch themselves off after a set time with no activity. On the E6, E8 and Z10 you can choose 15 minutes, 30 minutes, or 1 to 9 hours, and the S8 and Z6 have the same "Switch off after" setting. An auto-off Jura looks dead but only needs switching back on.

Signs it's this one: the machine worked earlier, nobody touched it for a while, and now the display is dark.

1. Place a cup under the coffee spout, and one under the milk spout on milk models.
2. Press On/Off once. The machine heats up, then rinses its coffee system.
3. Wait for the start screen before pressing anything else.
4. If it keeps switching off sooner than you'd like, lengthen "Switch off after" in the machine settings.

Time: 2 minutes
Cost: Free
Success Rate: About 25%
Difficulty: Easy

---

Fix 3: Warm a Cold Machine (Error 2 or Error 5) (Works About 20% of the Time)

This is the only numbered error the manuals explain. If a Jura has been exposed to the cold for a long time, "heating may be disabled for safety reasons", and it shows Error 2 or Error 5. The fix is time, not tools.

Signs it's this one: the machine was delivered, stored or moved somewhere cold, and now shows Error 2 or Error 5, or powers up but won't heat.

1. Switch the machine off and leave it indoors to warm up to room temperature. The manual gives no time, so be generous. A machine that sat in the cold warms through slowly.
2. Switch it on again and let it heat and rinse.
3. If Error 2 or 5 comes back once it's warm, contact JURA.
4. Next time you move or store it in the cold, empty the system first. Each manual has a "Transport / Emptying the system" procedure to protect the machine from frost.

Time: A few hours of waiting
Cost: Free
Success Rate: About 20%
Difficulty: Easy

---

Fix 4: Clear the Message That's Blocking Drinks (Works About 15% of the Time)

A Jura that's on but refuses to brew is waiting on you. The manuals list the messages that stop drinks, and each has a one-step fix.

Signs it's this one: the display is on, but pressing a drink does nothing or brings up a message.

1. Read the message and follow the matching row.
2. If "Fill water tank" stays on with a full tank (S8), the float is trapped. On the E6, Z6 and Z10, the opposite fault, no message with an empty tank, means limescale in the tank. Either way, descale the water tank: 3 JURA descaling tablets in a full tank, left for several hours, then rinsed.
3. Empty the grounds container with the machine on. JURA says that's the only way to reset the grounds counter.

The daily routine that keeps these messages away is in the Jura maintenance and cleaning guide.

Time: 5 minutes (several hours for a tank descale)
Cost: Free, or JURA descaling tablets
Success Rate: About 15%
Difficulty: Easy

---

When DIY Won't Work

Contact JURA customer support if:

• The socket is live, the cord is seated and the machine still shows nothing. The manuals give owners no internal check beyond this.
• An "Error" message other than 2 or 5 appears. JURA says to switch off and contact customer support. No other number has a published meaning.
• You smell burning or see damage. Unplug immediately. That's JURA's instruction too.

JURA's US customer service is 1-800-220-5701 (info@us.jura.com), and Canada's is 1-855-544-8600. The manuals say not to remove service covers, that there are no user-serviceable parts, and that repairs must be done by authorized personnel.

---

Preventing a Dead Jura

• Use a grounded socket. If you need an extension cord, JURA says it must be a grounding 3-wire type rated at least as high as the machine.
• Set a sensible auto switch-off time, so the machine isn't mistaken for dead.
• Empty the system before moving or storing the machine anywhere cold, using the manual's transport procedure.
• Keep up with the messages: empty the tray and grounds container daily, and refill with fresh, cold water.

---

FAQ

Does a Jura have a reset button?

Not one the manuals describe for a dead machine. The only power control is the On/Off button. The machine settings include a "Factory setting" item that resets your preferences, but that needs a working display.

Why does my Jura show Error 2 or Error 5?

The machine has been exposed to the cold for a long time, and heating is disabled for safety. Let it warm up to room temperature, then switch it on. If the error returns once it's warm, contact JURA.

Can a full drip tray stop a Jura turning on?

No. It stops drinks, not power. With a full tray or grounds container, the display shows "Empty drip tray" or "Empty grounds" and won't make products until you empty them. The machine itself is on.

My Jura switched off by itself. Is it broken?

Probably not. Jura machines switch off automatically after a set time without use: 15 or 30 minutes, or 1 to 9 hours on the E6, E8 and Z10. Press On/Off to wake it, and change "Switch off after" in the settings if it's too short.

I just moved and now my Jura won't turn on. What should I check?

The new socket first, then the cord at the back of the machine. If the move was in cold weather, let it reach room temperature before switching on (Fix 3). Before your next move, empty the system as the manual's transport section describes, to protect it from frost.

---

Related Jura Guides

• Jura leaking water
• Jura Z10 problems and messages
• Jura maintenance and cleaning guide
• Jura not heating water
• Jura complete troubleshooting guide

Sources: JURA Instructions for Use for the E6 (NAC), E8 (NAC), S8, Z6 and Z10 (NAA), US editions.