Midmark M11 - Page 47

English-47
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:
C660
Note: When a code ends in “0”, it means
the unit had a power interruption during
operating conditions. The operator may have
unplugged the unit when a previous error
code was displayed.
C660: POWER UP MODE
PRESSURE HARDWARE
UNPLUG / REPLUG UNIT
Pressure A/D converter reports an
average value outside the limits
for normal operation during
POWER UP mode.
Power interruption.
(Unit lost power for a few seconds during
Fill, Heat-Up, or Sterilization Mode.)
Check power cord connections.
(Power interruption could be due to
an electrical storm, brown out, etc.)
Unplug unit for 60 seconds, then plug
unit into a dedicated, properly rated circuit.
Check supply voltage. Contact an electrician to modify voltage.
The operator may have unplugged
the unit when a previous error code was
displayed.
Check previous error codes. Refer to: Service
Diagnostics (Recall Errors)
Refer to the error code(s) in this
troubleshooting chart.
Temperature sensor malfunctioning. Check for residue build up on temperature
sensor probe.
Clean sensor probe with Speed-Clean,
distilled water, and abrasive pad.
Check that nothing is touching or crowding
the temperature sensor.
(Example: trays, pouches, cassettes, etc.)
Reposition items so nothing touches or
crowds the temperature sensor.
Perform: Temperature Sensor
Resistance Test. Allow sensor to cool to
room temperature before testing.
Acceptable range 1.07-1.1K Ω.
Refer to:
Temperature Sensor Resistance Test
Replace temperature sensor.
Perform: Temperature Sensor Supply
Voltage Test. Disconnect sensor
harness from J12 on PC board.
On pins 1 & 2 acceptable range is
4.0 - 6.0 VDC. Refer to:
Temperature Sensor Supply Voltage Test
Replace Main PC board.
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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