Midmark M11 - Page 57

English-57
004-1032-00
TP210 Rev. A
© 2012 Midmark Corp. | 60 Vista Drive Versailles, OH 45380 USA | 1-800-643-6275 | 1-937-526-3662 |
[Revised: 8/15/17]
Troubleshooting Chart - continued
Problem Display / Symptom Cause Check Action
Error Code:
C677
C677: DRY MODE
PRESSURE OVERLIM
ITEMS NOT STERILE
UNPLUG / REPLUG UNIT
Gauge pressure inside chamber is
greater than 34.8 psig (240 kPa)
during DRY mode.
Chamber filter clogged. Check if chamber filter is clogged. Clean / Replace filter.
(Clean with Speed-Clean and brush)
Door spring missing / damaged. If the door motor releases the latch,
but the door remains closed, Inspect
door spring for damage.
Replace door springs.
Verify if door is at the vented position.
(Push in on door with out lifting handle)
Verify the QTY of door springs.
(M11- QTY 2, M9-QTY 1)
Verify door springs are at a 45 degree angle. Place door spring at a 45 degree angle.
Door motor system / latch
“hanging up”.
Check if the connecting rod is installed in the
proper location on the door motor cam.
(9 for M9, 11 for M11)
Install connecting rod in the proper
9 or 11 location on the door motor cam.
Pressure tubing at incorrect angle. Check tubing for restrictions and
ensure tubing is angled down and
away from the PC Board.
Adjust pressure tubing to correct angle.
Vent valve. Inspect vent valve.
(Clean valve, stretch spring)
Clean / Replace vent valve.
With the sterilizer in the Vent Mode...
Perform: Vent Valve Testing
(The valve is normally open, and
should not be energized during
the Vent mode).
PC Board malfunctioning.
Perform: Heating Element Supply
Voltage Test (With harness attached
to leads should have line voltage in
test mode)
Replace Main PC board.
Perform: Main PC Board Relay Test
(Check TP1 & TP2 for an acceptable range:
10 to 14 VDC)
Perform: Main PC Board Pressure
Transducer Voltage Test
(Acceptable range: 4.0 to 6.0 VDC)
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