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DIAGNOSIS AND TECHNICAL TROUBLESHOOTING
◊ INSTALLATION ◊
1) Machine vibrating or vibrating noise
a) Shipping bolts not removed: There are 3 shipping bolts which must be removed along
with the 3 spacers.
b) Machine not leveled: Adjust front leveling legs and tighten locknuts.
c) Machine installed on uneven floor: Adjust leveling legs.
d) Machine installed on wooden floor: Move machine to a more appropriate location or
install underlayment (also refer to Pre service instructions above)
e) Rubber cap missing from rear foot:: Install new rubber foot.
2) Water leaking from door
a) Door not screwed in properly: Screw door in properly.
b) Door not aligned: Align door and screw in properly/Replace with new door if required.
c) Boot/ door gasket leaking: Change boot / door gasket. (Porthole diaphragm)
◊ WASH CYCLE (MD 3720 CEE / MD 1720 V) ◊
1) Unit won't fill
a) No power input: Check that the cord is plugged in, and circuit breaker or fuse is OK. Test
unit power switch.
b) No water pressure: Check that fill hoses are connected and that the water supply is turned
on, and hoses are not kinked.
c) Drain outlet below 24" (water siphoning out): Route drain hose through a clamp on the
rear of the machine, at least 24" above the floor.
d) Door not closed tightly: Close door firmly, so that it latches.
e) Door Switch/ door lock: Set the washer knob to Towels / Sheets position. Switch On the
power. Test for 115V AC across Pin#11 of the pressure switch and terminal#2 on the control
module. If present the door switch is fine, if not present the door switch is defective.(Make
sure that the door is locked properly)
f) Pressure Switch. (Test with no water in the tub): Switch Off the power. Remove the
connector to the pressure switch and check for continuity between pins 11 & 12, 21 & 22, 31
& 32 on the pressure switch, It should all read zero resistance, if there is any reading then
the pressure switch is bad.
g) Wash Timer: Set the washer knob to Towels / Sheets position. Switch On the power.
Check for 115V AC across the terminals of EVC (Hot water valve) & EVF (Cold water valve),
if 115V is present the timer contacts are good or else defective.
h) Water inlet valves: If 115V AC is present across a water inlet valve coil and water pressure