Midmark M11 - Page 53

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English-53

004-1032-00

TP210 Rev. A

[Revised: 8/15/17]

Troubleshooting Chart - continued

Problem Display / Symptom Cause Check Action

Error Code:

C670

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.

C670: POWER UP MODE

PRESSURE OVERLIM

UNPLUG / REPLUG UNIT

Gauge pressure inside chamber is

greater than 34.8 psig (240 kPa)

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.

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).

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.

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)

Error Code:

C671

C671: SELECT MODE