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26
Part. 14000101
Rev. 12/2019
®/™ ©2019 Unity Laundry Systems. All rights reserved.
6.8 TROUBLESHOOTING
FAILURE
CAUSE
SOLUTION
The machine
does not run
· No Power
· Circuit Breaker Malfunction
· Controller Malfunction
· VFD Malfunction
· Check the circuit breaker, disconnect, and fuse
· Check the wire connection
· Check the interlock switch
· Check whether the power-on LED on the circuit
board is lit, if not, notify the manufacturer
· Check the controller for VFD alarm code
The drum is not
rotating at normal
speed
· The output frequency of VFD is
wrong
· Motor failed
· Bearing failed
· Belt failed
· Check VFD
· Check the voltage of the motor
· Check out-of-balance switch
· Check with hand whether the inner drum is turning
and remove foreign objects
· Check the belt or replace if necessary
Excessive water
in the laundry
· The drain is clogged
· VFD malfunction
· Low extract speed
· Out-of-balance switch too sensitive
· Check the drain valve and remove obstruction
· Contact manufacturer
· Rebalance the load
Excessive
vibration during
high extract
· Transport brackets are not removed
· The machine isn’t installed level
· Out-of-balance switch malfunction
· Load is too small / big
· Loose bearing
· Damaged shock absorber
· Remove transport brackets
· Level machine
· Check out-of-balance switch and replace it if
necessary
· Ensure the load is between 7-35 lbs
· Contact manufacturer
· Replace shock absorber
Door leakage
· The door is not tight
· The door gasket is damaged
· The door is misaligned
· Replace the door gasket
· Check and adjust door hinges
Drum overfilling
· Water level sensor malfunction
· Water inlet valve malfunction
· Circuit board malfunction
· Check water level line, adjust or replace if
necessary
· Check the water inlet valve, replace if necessary
· Replace main relay PCB
No water in
· No water or the water pressure is
too low
· Clogged water strainer filter
· Water inlet valve malfunction
· Drain valve malfunction
· Check external water supply
· Clean water strainer filter
· Check the water inlet valve, replace if necessary
· Check drain valve, replace if necessary
Water leaking
· Drain valve malfunction
· Hoses leaking
· Check drain valve, replace if necessary
· Check hoses and hoses connections, replace or
tighten if necessary
06 MAINTENANCE