Midmark M11 - Page 58

English-58
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:
C980
Note: An error code beginning
with “C98” means the high-limit
thermostat is tripped open.
This is normally due to lack
of water in the chamber.
C980: POWER UP MODE
HI-LIMIT OPEN
UNPLUG / REPLUG UNIT
High-limit thermostat opened for at
least 0.25 seconds during POWER UP
mode.
Maintenance not performed. Verify weekly & monthly maintenance has been
performed by customer.
Refer to User Guide.
Perform monthly maintenance.
Sterilizer was unplugged, then
plugged back in while thermostat was
still tripped.
Verify if error was preceded with other error
codes. (i.e. C983, C573)
Unplug unit for 60 seconds, then plug
unit into a dedicated, properly rated circuit.
Allow unit to cool for 30 minutes.
Hi Limit thermostat malfunctioning.
If error code does not reset…
Perform: Thermostat Continuity Test
Meter Reading - Anything but OL
Replace thermostats.
Loose / Damaged wire connection. Check wire connections at high-limit
thermostat and at J5 on Main PC Board.
Secure / Repair loose or damaged wire
connections.
If the unit skips the Fill mode…
Tray rack / tray plate not installed
properly.
Inspect tray rack / tray plate for proper
installation. (The 45 degree angled end
of tray plate must be positioned upward
and to the back of the chamber)
Install tray rack / tray plate properly.
(M11) Mesh filter not in place. Verify filter is in place. Re-Install filter.
Office running back to back cycles. Check if operator is running consecutive
cycles without completing the DRY cycle.
Complete full cycle.
Water level sensor malfunctioning.
Dirty/foreign object touching sensor.
Check sensor. Inspect water level sensor for
foreign objects. (burs, instruments, etc.)
Clean/Dry water level sensor.
(Clean with Speed-Clean and scotch bright pad)
Remove foreign objects.
Perform: Water Level Sensor Test
Replace water level sensor.
If the unit completes the Fill mode…
Sterilizer is unlevel.
(remove tray / trays)
Verify support surface is level. Place sterilizer on a level support surface.
Verify water on all sides of chamber are
equal.
Pressure Leaks. Check for loose / worn door and dam
gaskets or water leaking around door.
Verify door and dam gaskets are
installed properly.
(Replace gasket kit 1x year)
Clean / Replace gaskets.
Replacement fill / vent valve solenoid
requires rectifier harness for DC coil.
Install rectifier harness.
Check for voltage flow through rectifier
harness. Refer to:
Fill / Vent Valve Supply Voltage Test
Replace rectifier harness.
Leaking or defective vent valve.
(Check for water leaking from
condensing coil spout)
Perform: Vent Valve Test
Clean / Replace vent valve.
Leaking or defective fill valve.
Check for water leaking back into reservoir thru
the fill line.
(Look for bubbles coming from bottom of
reservoir) Perform: Fill Valve Test
Clean / Replace fill valve.
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