ERROR CODE C326: DOOR MODE

This Troubleshooting Guide is applicable for the following Midmark Autoclave Model Numbers: M9-020 thru -022, M9D-020 thru -022, M11-020 thru -022, M11D-020 thru -022
 

Notice Green LCD Display

 


If Your Midmark has a Green LCD Display as shown above, then this is the right guide for you

 




Midmark M9 & M11 Error C326: DOOR MODE





Display/Symptom Cause What to Check Solution
C326: DOOR MODE
DOOR CLOSED
OPEN DOOR

Door switch indicates that the door remains closed one second after door motor has attempted to open door. 		Door / dam gasket(s) sticking
Trays not pushed in properly		 Inspect Door and Dam gaskets for proper installation and any signs of sticking

Be sure trays slide in properly		 Install door / dam gaskets properly

Remove any obstructions that may prevent the trays from sliding in completely

Click Here For the Midmark M9 Door & Dam Gasket Kit Part # MIG027K-3380

Click Here For the Midmark M9 Door & Dam Gasket Kit ACPMM11-3381

Door spring missing and/or damaged Inspect door spring for damage
(If the door motor releases the latch, but the door remains closed: replace the door spring)		 Replace door spring if necessary

Click Here for the Replacement Door Spring For The Midmark M9 Autoclave (Part #MIS076-1218)

Click Here for the Replacement Door Spring For The Midmark M11 Autoclave (Part #MIS076-816)
Door motor system / latch "hanging up" Remove the door cover, and RH side panel

With the door closed, run the "Door Open Test" (Click Here For Instructions). Watch for any mechanical issues that may prevent the door from opening

Refer to: Service Diagnostics (I/O Test) (Click Here for Instructions)		 If mechanical issues are apparent, Adjust / replace door motor system as necessary
Door pins / latch binding With door open, door handle should move Up & Down freely

Inspect latch mechanism for wear / damage		 Clean door pins & latch mechanism

Replace worn / damaged components
Door switch or PC board malfunctioning Perform: Door Switch Testing Follow instructions in test procedures
Residual pressure in chamber Check chamber pressure when door motor is energized

If pressure is above 0.72 psi (5 kPa), check for blockage in the pressure sensor tubing between the PC board and the chamber

In addition, inspect the filter located inside the chamber to be sure it is not clogged		 Clear any restriction that could prevent chamber pressure from reaching the pressure sensor on PC board

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