Two beans, one mid-size Franke
When an A400 stops mid-shift, two bean lines go quiet at once. We repair this twin-grinder machine constantly: FoamMaster foam gone flat, a grinder that will not engage on selection, a brew unit stalling on grind buildup, brew temperature drifting between shots, a fault code on the screen. Give us the symptom and the likely parts ride along on the first visit.
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Franke · Mid-volume super-automatic
The A400 is Franke's mid-volume super-automatic, stepping up to twin grinders and an optional FoamMaster milk module. Rated for up to 100 cups a day, it lets a mid-size office or small hospitality operator run two bean varieties, espresso and decaf, or a milk bean, without the footprint of the larger A-line. From the bench the twin-grinder calibration and the FoamMaster air-flow are where most of the attention goes.
Why Grajqevci
Call in the morning and a technician is usually on-site before the day is out. Most Franke A400 jobs get diagnosed and fixed on the first visit.
Commercial coffee equipment is all we do, and Franke A400 is one of the platforms we know best. Not a generalist guessing at a service manual. Genuine OEM parts, industry-standard procedures.
Flat rate for the visit, with parts billed separately. For bigger jobs you'll see a written quote on-site before we proceed.
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A400 faults we diagnose
These are the A400 faults that actually book service calls, from FoamMaster recalibration to brew-unit overhauls, with the cause and fix for each.
Worn cam followers, grind buildup, or a misaligned brew group. We pull the brew unit, clean every wear surface, replace gaskets, lubricate moving parts with food-safe grease, and verify cycle integrity across test shots.
Brew screen torn or piston seal worn. We inspect both screens, replace any that show wear, fit a new piston seal, and recalibrate grind coarseness.
Scale buildup affecting heat transfer or a drifting NTC sensor. We descale the brew circuit, measure brew water temperature with a calibrated probe, and recalibrate the temperature offset in the service menu.
Scale insulating the element or element degradation. We descale, measure heat-up time, test element resistance, and replace the element if performance doesn't recover.
Cycle didn't run to completion or counter wasn't reset. We verify the descale ran end-to-end, manually reset the counter, and check the filter cartridge condition.
Failed O-ring on an internal connector, brew unit seal leak, or a cracked drain-line fitting. We pressure-test the circuit, identify the exact leak point, replace the failing seal or fitting, and verify dry operation.
Caused by milk-protein buildup in the foam chamber or a worn air-intake spring. We strip and sanitize the FoamMaster module, replace the spring and O-rings, recalibrate the air-flow setting, and verify hot foam density on each drink profile.
Either the cold-foam air valve is out of calibration or the milk cooler isn't holding temperature. We recalibrate the air valve, test cooler output, and verify cold-foam density across multiple cycles.
Worn pump impeller, air leak in the suction line, or a blocked intake. We pressure-test the line, inspect the pump head, replace the impeller if flow is below spec, and replace suction-line seals as preventive.
The daily clean has been skipped or the cleaning cartridge is exhausted. We deep-clean the full milk pathway, replace the cleaning cartridge, refresh customer training, and replace the milk hose if it's stained.
Burr wear or dose-sensor drift, often uneven if one hopper sees more volume. We weigh dose from each grinder across 10 shots, measure burr gap, recalibrate, and replace burrs as needed.
Failed grinder motor relay or a feedback sensor not registering. We test the relay, verify sensor signal, and replace the failing component. The motor itself is rarely the fault.
Known issue on certain A400 firmware versions. We roll back to a known-stable build or apply the latest patch, then restore drink profiles from backup.
We read the full error log, identify whether the fault is a sensor, relay, or board issue, and replace the specific failing component. Error log is cleared and the machine is functionally tested across all drinks.
Level sensor in the cleaning cartridge reading incorrectly or a blockage in the cleaning circuit. We diagnose where the cycle is stalling, clear blockages, verify cartridge dosing, and replace the sensor if needed.
Dirt on the optical sensor, misalignment, or a failed sensor. We clean the sensor lens, verify alignment, and replace the sensor if it doesn't trigger reliably across cup sizes.
Your coffee emergency ends here
Call or submit the form. We confirm your address, model, and the issue.
An experienced technician arrives, runs full diagnostics, and identifies the root cause.
You receive a flat, itemized quote. Nothing proceeds without your green light.
We complete the repair, run a test cycle, and walk you through what to watch for.
Parts on the truck
Receipts
Their proactive approach and thorough maintenance routines have helped us avoid costly breakdowns.
*Estimated based on the approximate distance from our nearest service centre, average commute time, and median service-call length for one machine. Prices in Canadian dollars (CAD $). Final quote provided on-site after diagnosis.
FAQ
20 answers covering service, repair, parts, installation, warranty, and edge cases.
Updated August 2026
Yes, that is the point of the twin grinders and dual hoppers: espresso on one side and decaf or a milk bean on the other, selected per drink. When one grinder doses differently from the other it is usually uneven burr wear from one hopper doing more work. We weigh each side and recalibrate.
Usually milk protein in the foam chamber or a worn air-intake spring. We strip and sanitize the FoamMaster, fit a fresh spring and O-rings, reset the air-flow, and verify hot foam density on each profile. A daily clean keeps it from creeping back.
Usually a failed grinder-motor relay or a feedback sensor that has stopped registering, not the motor itself. We test the relay, confirm the sensor signal, and replace whichever has failed. The machine can run on a single grinder while the part is on order if you need it.
Yes, and it is a known issue on certain A400 firmware. We roll back to a stable build or apply the corrected patch, then restore your drink profiles from backup. No need to replace a screen that is only hung on software.
Either scale on the brew circuit interfering with heat transfer or an NTC sensor that has drifted. We descale the circuit, measure brew-water temperature with a calibrated probe, and reset the temperature offset in the service menu. Shot-to-shot stability is checked before we sign off.
FoamMaster gives adjustable hot and cold microfoam for a fuller milk menu; EasyClean is simpler and fine where milk drinks are basic. We service both, and from a repair standpoint FoamMaster has more calibrated parts to keep clean. If yours has FoamMaster, the daily clean matters more.
Usually dirt on the optical sensor lens, a knocked alignment, or a failed sensor. We clean the lens, check alignment, and replace the sensor if it will not trigger reliably across cup sizes. It is a quick fix that prevents a lot of misplaced pours.
For most faults, comfortably. Seals, sensors, a grinder relay, a FoamMaster service all cost a small fraction of replacement. We only flag replacement when an aging unit needs several major parts at once, and we give you the math before you decide.
Flat rate for the visit, parts billed at their actual cost on top. You'll hear the rate when you book, and for bigger jobs we quote in writing on-site before any work starts. No estimate that balloons mid-job.
Same-day. Call in the morning and a technician is usually on-site before the day is out; calls placed later in the day book for the next morning. Urgent breakdowns get priority routing.
The GTA and most of the Golden Horseshoe: Toronto through Mississauga, Vaughan, and Markham, out to Oshawa, Hamilton, and Niagara. If you're not sure you're in range, call and we'll tell you straight.
No. We work call by call. Plenty of customers put us on a maintenance schedule eventually, but that's their choice after seeing the work, never a requirement.
Parts carry their manufacturer warranty, and we stand behind our labour: if the same fault recurs, call us and we'll review it. Specific terms are discussed upfront on each job, not promised in marketing copy.
On-site whenever possible, which is most of the time. If a job genuinely needs the bench, like a full boiler rebuild or major electronics work, we'll say so before anything leaves your building.
Call us or send the form on this page. We confirm the machine, the fault, and a time window the same day. If it's urgent, say so and we'll route the nearest technician.
Diagnosis first: we confirm the fault, tell you what caused it, and quote the fix before touching a wrench. Most repairs finish in that same visit because the common wear parts ride on the truck.
High-wear parts for the platforms we service constantly ride on the truck. Anything else we order, usually next-day where suppliers allow, and we tell you the lead time before committing you to anything.
Usually, yes. We service legacy machines for as long as parts can be sourced, and we're honest when a repair stops making financial sense against a replacement. You get the math, you make the call.
Often, but that's not the pitch. We quote against the actual work, not a factory pricing book, and we'll tell you when a manufacturer warranty claim is the better route. Transparency is the value; the price usually follows.
Yes, and we do it by default on the way out. Half of repeat faults trace back to skipped daily cleaning or wrong routine, so the technician walks your team through what actually matters before leaving.
One call books a technician fluent in twin-grinder and FoamMaster calibration.
Call (289) 217-3796 now →