Hussmann SPECIALTY TY3-3X4.5E-R User Manual page 63

Problem
Water has pooled
under case.
Case is not draining
properly.
Frost or ice on
evaporator coil.
Lights do not come
on.
Condition
Water is on the Floor
Troubleshooting Guide (Cont'd)
Possible Cause
Case drain is clogged.
PVC drains under case
may have a leak.
Case tub has unsealed
opening.
Evaporator pan is
overflowing (if applicable).
Case is not level.
Drain screen is plugged.
Drain or P-trap is clogged. Clear any debris.
Evaporator fans are not
functioning.
Defrost clock is not
functioning.
Coil is freezing over.
LED Driver/light socket
wiring.
LED Driver needs to be
replaced.
Lamp socket needs to be
replaced.
Lamp needs to be
replaced.
Light Switch needs to
replaced.
Caution! Water on flooring can cause much damage! Until cause is determined (and repaired),
following these procedures:
Use wet-dry vacuum (or mop & bucket) to remove standing water.
Use 'catch pans' for water to drain into. Swap out regularly until case has completely drained.
Check that the drain trap is free of debris.
Check that the PVC drain pipes are correctly positioned over evaporator pan.
Check store conditions. To prevent condensation in NSF® Type 1 environments, maximum
conditions are to be 55% humidity / 75° Fahrenheit. For NSF® Type 2, maximum conditions
are to be 60% humidity / 80° Fahrenheit. See serial label (at case rear near main power
switch) for NSF® Type of your case.
Check that evaporator pan is plugged in.
Caution! Evaporator pan may be malfunctioning. If so, water will overflow pan and seep onto
flooring causing damage! Until evaporator pan is functioning (or is replaced).
Caution! Disruption of power can cause water to overflow pan and seep onto flooring
causing damage! Check that power to case is constant. Until power is restored, following
these procedures:
When power to case is restored, evaporator pan should function properly and water will no
longer overflow onto flooring.
Possible Solution
Clear drain.
Repair as needed.
Seal as needed.
Check electrical connection to evaporator pan.
Level the case.
Clean drain screen and remove any debris.
Check electrical connections.
Case should be serviced by a qualified service technician.
Return air is blocked, make sure debris is not blocking the
intake section.
Check electrical connections. See Electrical Section and
check wiring diagram.
Case should be serviced by a qualified service technician.
See Electrical Section.
Case should be serviced by a qualified service technician.
See Maintenance Section.
Case should be serviced by a qualified service technician.
Troubleshooting
63