Hussmann VR3-M Series User Manual page 41

Troubleshooting Cont'd
Problem
Case temperature is
too cold.
Condensation on
glass.
Water has pooled
under case.
Case is not draining
properly.
Frost or ice on
evaporator coil.
Lights do not come
on.
Possible Cause
The t-stat temp is set too
low.
Ambient conditions may
be affecting the case
operation.
Ambient conditions may
be affecting the case
operation.
There are glass gaps on
the side of the case.
Glass is not completely
shut.
Ambient Conditions
Case drain is clogged.
PVC drains under case
may have a leak.
Case tub has unsealed
opening.
If the case is in a line-
up, case to case joint is
missing or unsealed.
Evaporator pan is
overflowing (if applicable).
Case is not level.
Drain screen is plugged.
Drain or P-trap is clogged. Clear any debris.
Defrost clock is not
functioning.
LED Driver /light wiring.
LED Driver needs to be
replaced.
LED Light needs to be
replaced.
Light Switch needs to
replaced.
Possible Solution
Check settings. See Technical Specifications section.
Check case position in store. Is the case located near an
open door, window, electric fan or air conditioning vent that
may cause air currents? Case must be located minimum
15 Ft away from doors or windows. Cases are designed to
operate at or below 75°F Dry bulb and 55% relative humidity.
Check case position in store. Is the case located near an
open door, window, electric fan or air conditioning vent that
may cause air currents? Case must be located minimum
15 Ft away from doors or windows. Cases are designed to
operate at or below 75°F Dry bulb and 55% relative humidity.
See glass adjustment section.
Close glass correctly.
Turn on Air Sweep Fans located at the right rear of
merchandiser.
Clear drain.
Repair as needed.
Seal as needed.
Install case to case joint and seal as needed.
Check electrical connection to evaporator pan. Check float
assembly, it should move freely up and down the support
stem. Clear any debris.
Level the case.
Clean drain screen and remove any debris.
Case should be serviced by a qualified service technician.
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.
Case should be serviced by a qualified service technician.
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