Operations OS EN TECH
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Midmark M11 sterilizer throwing error code C983 — what does it mean and how do I fix it?
Arcadian 0.95 · DECODED
EQUIPMENTMidmark M11 tabletop autoclave
SYMPTOMError code C983 on cycle start
DIAGNOSISHigh-limit thermostat tripped during heat-up. C983 is a FATAL heat-up fault — check the hi-limit thermostat + heater circuit before replacing the control board.
PARTSHi-limit thermostat (015-0413-00) · Thermal fuse kit (040-0001-00)
SOURCEMidmark M4 Service Manual · p.48
Diagnosis complete — turn it into a tracked service callPulls the equipment, fault, parts & a draft log straight into the cockpit.

New service call

Arcadian pulled this from the diagnosis. Review, then create — you can edit anything on the next screen.

Customer
San Marcos Dental — Dr. Smith change
Equipment
Midmark M11 Autoclave · SN M11-0421
Fault
C983 — Heat-up (hi-limit) · FATAL
Recommended parts
Hi-limit thermostat · on truckThermal fuse kit · warehouse
Draft job log
Confirmed C983 hi-limit fault from diagnosis. Plan: verify hi-limit with meter, replace thermostat, run 2 test cycles.
Nothing is billed or scheduled yet — you approve those inside the call.