ABL77 Service Manual Chapter 3: Troubleshooting
Reference Table, Continued
Problem Probable Cause Corrective Action
Temperature Errors
SCi temperature circuit failure Replace the sensor cassette. See
Chapter 4, Test and Calibration
Procedures for further
instructions on checking the
heater circuit
Valve Board - worn or corroded
pin receptacle
Replace the valve board. See
Chapter 5, Dismantling
Analog Board - component
failure
Replace the analog board. See
Chapter 5, Dismantling
Waste Drain – waste fluids
overflowing out the waste drain
during flush cycles
Blockage in the waste drain
tubing
Flush the waste drain. See
Waste Drain in Chapter 4
further in this chapter
Waste Pump Motor failure Replace the waste pump (a
"waste pump kit" includes the
motor and pump head). See
Chapter 5, Dismantling
Waste Pump head is worn Replace the waste pump head
Cal Pack waste port is blocked
or pouch has been over-filled
Replace the cal pack
3-15
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