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M9 & M11 Troubleshooting - Error Codes - Newer Autoclaves

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M9 & M11 Troubleshooting - Error Codes - Newer Autoclaves

Midmark M9 & M11 Error Codes
(For Units With Serial #s RN, RP, RR, V)



M9/M11 Control Panel


If an electronic malfunction is detected during a cycle, a numeric error code will appear on the display panel.

Each number in the error code provides information about the problem that occurred.
  • The First Number Tells You Where The Problem Is Located (The Component)
    (example: The number 3 is the Door Switch)


  • The Second Number Indicates What Problem Or Symptom Was Detected (Problem)
    (example: The number 8 = Open)


  • The Third Number Tells You When The Problem Was Detected (Mode)
    Example: The Number 2 = Fill Mode)


  • M9/M11 Control Panel


    The table below cross-references the numeric error code with the Component, Problem, and Mode.

    First Digit (Component) Second Digit (Problem) Third Digit (Mode)
    0= General System 0 (not used) 0= Power-Up Mode
    1= Stop Button 1= Power Loss 1= Select Cycle
    2= Water Level Sensor 2= Closed 2= Fill Mode
    3= Door Switch 3= Low 3= Heat-Up Mode
    4 (not used) 4= High 4= Sterilizing Mode
    5= Temperature Sensor 5not used) 5= Vent
    6= Pressure Sensor 6= Hardware 6= "Door To Open"
    7 (not used) 7= Over Limit 7= Dry
    8 (not used) 8=Open 8 (not used)
    9= High Limit Thermostat 9 (not used) 9 (not used)


    Codes
    Error Code Problem Possible Solution
    C010 Power Interruption First Check Supply Voltage
    (A Dedicated Circuit is recommended)
    C060 Power Interruption First Check Supply Voltage
    (A Dedicated Circuit is recommended)
    C099 None [This code was generated during testing at the factory] Ignore this error code
    (Push STOP to restart)
    C100 Series (all) STOP button was pressed during a cycle. Explain proper operation to users. 1st..
    (Push STOP button to restart
    C200 Series (all) Water level sensor did not detect a full chamber within 5 minutes of starting the cycle
    1. Low water in reservoir? (Add water if necessary)
    2. Chamber Filter
      Remove filter & clean using Speed Clean and a brush or replace
    3. Water Level Sensor (Replace If Necessary)
    4. Fill Valve
      Check all wire connections. Test the valve & replace if necessary.
    5. Air Valve (Replace If Necessary
    6. Main PC Board
    C326 PC board detected open door switch contacts during a cycle. -or- Door switch contacts remained closed after door motor shut off.
    • If Door Is Open...
      Check Door Switch
      Check Main PC Board


    • If Door Is Closed...
      Check Door Latch Mechanism (Adjust latch if necessary)
      Check Door Motor / Switch
    C382 PC board detected open door switch contacts during a cycle. -or- Door switch contacts remained closed after door motor shut off.
    • If Door Is Open...
      Improper operation. (Do not open door during cycle)


    • If Door Is Closed...
      Check Door Switch
    C383 PC board detected open door switch contacts during a cycle. -or- Door switch contacts remained closed after door motor shut off.
    • If Door Is Open...
      Improper operation. (Do not open door during cycle)


    • If Door Is Closed...
      Check Door Switch
    C384 PC board detected open door switch contacts during a cycle. -or- Door switch contacts remained closed after door motor shut off.
    • If Door Is Open...
      Improper operation. (Do not open door during cycle)


    • If Door Is Closed...
      Check Door Switch
    C500 Series (all) Chamber temperature reading was not within the acceptable range for the current cycle.
    1. Is sterilizer level? Adjust leveling feet as necessary.
    2. Check for pressure leaks. (Refer to Section B Of Factory Service Manual for checkpoints.)
    3. Chamber Filter. Remove filter & clean using SpeedClean and a brush or replace filter
    4. Temperature Sensor
    5. Water Level Sensor
    6. Heating Element
    7. Main PC Board
    C560 Indicates a power interruption occurred after an error code was displayed. When these errors appear, always check the five previous error codes.
    [Refer to Section B: Service Diagnostics of the Factory Service Manual
    C570 Indicates a power interruption occurred after an error code was displayed. When these errors appear, always check the five previous error codes.
    [Refer to Section B: Service Diagnostics of the Factory Service Manual]
    633
    Low Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle
    1. Check For Pressure Leaks
      Refer to Section B Of Factory Service Manual for checkpoints
    2. Check Water Level Sensor
    3. Heating Element
    4. Main PC Board
    C645
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle.
    1. Vent Valve
    2. Chamber Filters
      Remove both filters & clean using SpeedClean and a brush or replace.
    3. Main PC Board
    C647
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle.
    1. Vent Valve
    2. Chamber Filters
      Remove both filters & clean using SpeedClean and a brush or replace.
    3. Main PC Board
    C660 Indicates a power interruption occurred after an error code was displayed When this errors appear, always check the five previous error codes.
    [Refer to Section B: Service Diagnostics of the Factory Service Manual
    C661
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle. Main PC Board Hardware Error
    C662
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle. Main PC Board Hardware Error
    C663
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle. Main PC Board Hardware Error
    C664
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle. Main PC Board Hardware Error
    C665
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle. Main PC Board Hardware Error
    C667
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle. Main PC Board Hardware Error
    C670 Indicates a power interruption occurred after an error code was displayed When this errors appear, always check the five previous error codes.
    [Refer to Section B: Service Diagnostics of the Factory Service Manual
    C671
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle.
    1. Vent Valve
    2. Chamber Filters
      Remove both filters & clean using SpeedClean and a brush or replace.
    3. Main PC Board
    C672
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle.
    1. Air Valve
    2. Main PC Board
    C673
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle.
    1. Air Valve
    2. Main PC Board
    C674
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle.
    1. Air Valve
    2. Main PC Board
    C675
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle.
    1. Vent Valve
    2. Chamber Filters
      Remove both filters & clean using SpeedClean and a brush or replace.
    3. Main PC Board
    C677
    High Pressure Error
    Chamber pressure reading was not within the acceptable range for the current cycle.
    1. Vent Valve
    2. Chamber Filters
      Remove both filters & clean using SpeedClean and a brush or replace.
    3. Main PC Board
    C900 Series (all) High-limit thermostat contacts opened during cycle
    1. Check High-Limit Thermostats
    2. Main PC Board
    C980 Indicates a power interruption occurred after an error code was displayed When this error appears, always check the five previous error codes.
    [Refer to Section B: Service Diagnostics of the Factory Service Manual