English-71
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:
C987 - continued
C987: DRY MODE
HI-LIMIT OPEN
UNPLUG / REPLUG UNIT
High-limit thermostat opened for at
least 0.25 seconds during DRY mode.
Heating element malfunctioning. Inspect heating element. Heating
element should lay flat in the bottom
of the chamber. Heating element
should be free of any flaking / pitting.
Perform: Heating Element Resistance Test
(should read 9-11 Ω)
Replace heating element.
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.
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.
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