Error code reference
Mavam machines rarely speak in numbered error codes. The platform is diagnosed by symptom and by per-group service-menu checks, so this page lists the alerts, wear states, and platform-specific triggers that actually put a Mavam on our schedule, with what each one means and how it gets fixed.
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About these codes. Compiled from Mavam product research and our GTA service logs. Updated July 2026
Every Mavam group has its own boiler, so one group sitting cold while the rest hold temperature points at that group's heating element, NTC sensor, or PID. It is not a platform-wide fault.
Mavam's small per-group boilers are sensitive to water hardness and scale far faster than larger thermosyphon systems. The machine shows it through under-temperature alerts on the affected group, longer heat-up times, and weak steam where the steam circuit shares the path.
Each group runs its own pump, so pressure sagging on one group while the others hold steady points at that pump, the OPV, or a restriction between pump and group head.
A distinct chatter or whine from one group's position in the cabinet, while the others run quiet, means air in that group's supply line or a pump reaching end of life.
The group gasket and dispersion screen are the same wear items as on any commercial espresso group: they harden, deform, and start leaking under pressure. On a Mavam the group head also passes through the bar surface, so the through-counter sealing collar is part of the picture.
One group channelling while the others extract evenly points at a partially clogged dispersion screen or a scaled water path immediately upstream of that group.
A wand that will not deliver dry steam traces to scale in the steam line, a worn steam valve cartridge, or low steam boiler pressure on the relevant group.
Dripping from an idle wand means the steam valve is not sealing fully, almost typically a worn O-ring on the valve stem.
Each group carries its own PID controller, temperature probe, and wiring harness. A single misbehaving display is that group's electronics, not a platform-wide failure.
Mavam's main power and protection circuitry lives under the counter, where a surge, a tripped protection device, or a damaged input from a counter-side knock can take the machine offline.
One group dispensing stale-tasting water while the others run clean points to a stagnant water path: a boiler that has not been flushed regularly, or a stretch of plumbing between filter and group that has gone quiet.
Not a machine fault at all: bar build-outs and retrofits sometimes close off the cabinet access the original installer planned around, and the constraint only shows up when service is due.
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FAQ
9 answers about resetting codes, recurring faults, firmware versions, and when DIY ends.
Updated July 2026
Every documented Mavam fault we see is listed above, with its meaning, common causes, and what to try before calling a technician. If the code on your machine isn't on this page, call us with the exact display string and we'll work it out by phone.
Sometimes. Many Mavam codes clear after a power cycle, a completed descale, or a counter reset through the service menu. Codes tied to a hardware fault (failed sensor, blown element, board issue) will return immediately and need a technician. Each code above lists what's safe to try first.
A code that returns after a power cycle is signalling a real fault, not a glitch. The underlying part (sensor, heating element, valve, motor, board) needs replacement. Repeat codes are diagnostic gold for us, so call with the exact code and any timing or symptom pattern you've noticed.
Mavam updates fault tables across firmware revisions and model generations, and not every code is documented publicly. We see codes in the field that aren't in any published list. Call us with the exact display string and the model and we'll work it out from our service log.
Most calls in Toronto and the immediate GTA get same-day on-site response when scheduling allows. Tell us the code and the model when you book and we'll bring the right parts on the first visit so the repair finishes the same day in most cases.
No. We're an independent service provider, not affiliated with Mavam, and we work on machines outside the manufacturer's authorized network routinely. That independence lets us service older or out-of-warranty machines authorized networks may decline, and quote transparently every time.
Depends on the machine, the code, and the cost. We give you honest math on this. If repairs are starting to exceed roughly 50% of a refurbished replacement and multiple major systems are throwing codes, we'll tell you it's time to look at replacing rather than running up the repair bill.
If your machine is under the manufacturer's warranty, independent service may affect coverage depending on Mavam's specific terms. Try the manufacturer's authorized network first. If their response is slow or they decline coverage for your code, call us and we'll service it on standard terms.
12 codes are documented above, organized by the system they affect. The list is compiled from manufacturer service literature, technician forums, and our own service log. We update it as new codes appear or firmware adds new states.
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We diagnose Mavam codes by phone routinely. Same-day on-site dispatch if it needs hands on the machine.
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