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Prima Dishwasher Error Codes: What They Mean and How to Fix Them
If you have landed here, chances are that your Prima dishwasher has thrown you one of those frustrating error codes, and you’re trying to figure out what went wrong-and fast. Dishwashers are to make life easy, not give us an extra headache. The good news? Most Prima dishwasher fault codes are easy to understand, and most of the time, you yourself can fix it without calling the technician.
Now, let’s break it all down in simple terms so you can get your dishwasher back to doing its job-cleaning dishes instead of causing stress.

What Are Prima Dishwasher Fault Codes?
Fault codes are your dishwasher’s way of saying something is amiss. It’s like the machine sending out an SOS when it detects a problem-be it a clogged filter, a leak, or some kind of problem with water flow-and flashes a code on the control panel.
Each code is associated with a particular problem that needs to be fixed. Even though error codes may look daunting at first glance, they are actually just a guideline toward finding the problem.
Common Prima Dishwasher Fault Codes and What They Mean
Here’s a quick rundown of fault codes you might encounter, along with what they’re trying to tell you.
Error Code | Issue | What to Check |
---|---|---|
E1 | Water Supply Issue |
• Check if water supply tap is fully opened • Look for kinked or blocked hose • Verify water pressure is at minimum level |
E2 | Drainage Problem |
• Check drain hose for blockage or kink • Clean dishwasher filters • Verify kitchen sink drain pipes aren’t clogged |
E3 | Heating Element Malfunction |
• Check if heating element is functional (professional check required) • Verify temperature sensor operation |
E4 | Water Leak Present |
• Look for visible standing water around/under dishwasher • Check door seal for cracks or damage • Inspect for internal hose leakage |
E5 | Overfill Error |
• Check inlet valve closure for faults • Inspect drain pipes for clogs causing backflow |
E6 | Float Error |
• Check sensor connections for looseness • Sensor may need replacement (engineer required) |
E7 | Spray Arm Blocked |
• Remove and clean spray arm • Check for food particles or limescale buildup • Ensure spray arm spins freely |
E1 – Water Supply Issue
This fault appears when your dishwasher is not getting sufficient water. What to check: Make sure the tap of the water supply is fully opened. Check whether the hose is kinked or blocked. Check the water pressure to see if the level is at a minimum.
E2 – Drainage Problem
E2 indicates that water is not draining well. This is one of the most frequent faults.
Things to check:
- Check the drain hose for a blockage or kink.
- Always clean the filters in the dishwasher as debris blocks the flowing of water
- Ensure kitchen sink drain pipes aren’t clogged
E3- The heating element’s malfunction issue
If your water isn’t heating up this code will appear, and this means to some extent that the washing/sterilization may not even happen appropriately or thoroughly.
What to check:
- Insure the heating element is functional; this is not possible to be self-diagnosed.
- Check temperature sensor works or not.
E4: Water Leak Present
Leak inside of the dishwasher could have occurred. To check on the following:
- Find visible standing water around, and under dishwasher
- Check seal under door for crack or damage.
- Internal hose leakage.
E5 – Overfill Error
E5 is an overfill error and it means the interior of the dishwasher is too full of water.
What to Check:
- Check for a faulty closure on the inlet valve.
- Check to see if any of the pipes in the drain are clogged which could prevent drainage from occurring by creating a type of back flow.
E6 – Float Error
This means one of the sensors inside the machine, like the temperature or water level sensor, is faulty.
Things to check:
- Check that connections to the sensor are not loose.
- A sensor might need to be replaced; this generally requires an engineer.
E7 – Spray Arm Blocked
Your dishwasher may detect that its spray arm isn’t turning properly.
What to check:
- Remove and clean the spray arm food particles or limescale buildup can cause blockages.
- Ensure the spray arm is unobstructed and spins freely.
How to Clear a Fault Code
Once you’ve addressed the issue, the dishwasher might still display the fault code. Here’s how to reset it and get back to business:
- Switch off the dishwasher. Do this using the control panel or unplug it from the power outlet.
- Wait for 5-10 minutes. This will allow the system to fully reset.
- Switch on the dishwasher. If the problem has been solved, the error code should be gone. If it’s not, recheck the problem or consult a professional.
Preventing Future Fault Codes
No one likes duplicate error messages popping up repeatedly. Here are some simple maintenance tips to ensure your Prima dishwasher runs smoothly:
- Clean the filter frequently: Pull out the filter every two weeks or so and clean it to avoid food particles from blocking the system.
- Inspect spray arms: Ensure no blockages and give them a good rub over to remove any buildup.
- Check the door seal: Clean the seal to prevent dirt accumulation and lacerations. Look for any apparent cracks or cuts.
- Monitor, and use proper detergent: Be sure you are using dishwasher-safe detergent; otherwise, there may be an overload of suds or improper cleaning.
- Perform a cleaning cycle: If possible, perform a monthly cleaning cycle using a dishwasher cleaner to remove the traces of limescale and mineral deposition if your area has hard water.
When to Call a Professional
While many fault codes are fixable on your own, some require expert help. If you’ve tried troubleshooting and the error won’t go away, or if you’re dealing with serious issues like leaks or electrical faults, it’s best to bring in a technician.
Remember, a small investment in repair now can prevent costly damage down the line.
Fault codes of a dishwasher are frustrating to handle, but with a bit of patience and some know-how, most issues are easy to resolve. Prima dishwashers are designed to keep your kitchen running smoothly, and with regular maintenance, they’ll serve you reliably for years to come.
Got questions about your dishwasher? Leave a comment or give us a shout-we’re here to help!