English-69
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:
C985 - continued
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.
C985: VENT MODE
HI-LIMIT OPEN
UNPLUG / REPLUG UNIT
High-limit thermostat opened for at
least 0.25 seconds during VENT 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.
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)
Sterilizer overloaded. Check the size of the load.
(Refer to User Guide)
Reduce load size.
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