GE GUD27ESSMWW Technical Service Manual page 71

Fault
Code Fault Name
18 Drain Pump
Clearing algorithm
failed
Description
While draining the pressure sensor value
for water level did not indicate the washer
was empty before the Max Continuous
Drain ON time was reached.
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Repair Action
This fault is set and will be
seen with fault 16 when drain
pump clearing algorithm failed
to remove the blockage and
the rest of the water in the
tub. Also this fault may occur
due to possible issue with the
pressure sensor system. If
drain pump system is working
correctly, refer to the last four
steps of fault 8.
Check the drain pump for
blockage.
Check Owner's Manual and
Installation Instructions for
proper standpipe height.
Check resistance of the
pump (13.5 ohms) from J512
connector on the control.
If open circuit, check wiring
harness to the pump and pump
motor.
Check for 120 VAC to the drain
pump.
If voltage is present and pump
does not operate, replace
pump.
Check water valve operation.
Check pressure tube for
pinches where it goes through
top cover grommet.
Check the output voltage from
the pressure sensor to ensure
it matches the water level in
the basket according to the
pressure sensor chart.
Check pressure tube for
trapped water.
Ensure pressure chamber port
is free from obstruction using
drill bit size 1/16" by hand so
as not to drill through the inner
wall.