Pentair MYERS MG200 Series - Troubleshooting Guide; Pump Not Running or Humming; Pump Runs but No Water Delivery; Pump Runs but Does Not Stop

5
Pump does not run or hum.
See A, B, C, D, E or F.
Pump runs but does not
deliver water.
See G, H, I, J, K or L.
Pump runs and pumps out sump
but does not stop.
See M.
Pump runs but delivers only
small amount of water.
See I, J, K, L or N.
Fuse blows or circuit breaker
trips when pump starts.
See K, L, N, O or P.
Motor runs for short time
then stops. Then after
short period starts again.
Indicates tripping overload
caused by symptom shown.
See K, L, N or P.
For any other symptoms
contact a Myers authorized
service facility.
A. Line circuit breaker may be off;
or fuse, if used, may be blown
or loose.
B. Water level in sump may be too
low. Run in more water.
C. Pump cord plug may not be
making contact in receptacle.
D. If pump is using the series cord
plug, the two plugs may not be
plugged tightly together.
E. Float may be stuck. Be sure
float operates freely in basin.
Check tether length of switch.
F. If all symptoms check OK,
motor winding may be
open; take to service center
for repair.
G. Check valve may be installed
backward. Arrow on valve
points in direction of flow.
H. Discharge shut-off valve, if
used, may be closed.
I. Pump may be air locked. Start
and stop several times by
plugging and unplugging cord.
Check vent hole on pump case
for plugging.
J. Pump head may be too high.
Horizontal distance does
not affect pumping, except
loss due to friction.
K. Inlet holes in pump base may
be clogged. Remove pump
and clean out openings.
L. Impeller or volute openings may
be plugged or partially plugged.
Remove pump and clean.
Check tether length of switch.
M. Float is stuck in up position.
Be sure float operates freely
in basin.
N. Pump impeller may be
partially clogged causing
motor to run slow, resulting in
motor overload.
O. Fuse size or circuit breaker is
too small. Must be 20 amps.
P. Defective motor stator. Return
to Myers
®
service center.
TROUBLESHOOTING GUIDE