Service; Troubleshooting - Hussmann INSIGHT REACH-IN Installation & Operation Manual

TROUBLESHOOTING

Problem
Case temperature is too warm. Ambient conditions may be
Case temperature is too cold.
Condensation on glass.
HUSSMANN CORPORATION • U.S. & CANADA 1-800-922-1919 • BRIDGETON, MO 63044-2483 • MEXICO 1-800-890-2900 • WWW.HUSSMANN.COM • PN 3181178_A
Possible Cause
affecting the case operation.
Discharge air temp is out of
spec.
Case is in defrost.
Product is outside of the load
limit area, blocking airflow.
Coil is freezing over.
Condensing coil or evaporator
coil is clogged or dirty.
The t-stat temp is set too low.
Ambient conditions may be
affecting the case operation.
Ambient conditions may be
affecting the case operation.
Inadequate air circulation.
Doors are not completely shut.

SERVICE

Possible Solution
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 55% Relative humidity and
a temperature of 75°F.
Check evaporator fan operation. Check electrical connections and input voltage.
Fans are installed backwards. Check airflow direction.
Make sure fan blades have correct pitch and are per specification.
Check to see that fan plenum is installed correctly. It should not have any gaps.
Check suction pressure and ensure that it meets factory specifications.
Check defrost settings. See Technical Specifications section.
Redistribute product so it does not exceed load limit. There is a sticker on the inside of the
case indicating the maximum load limit.
Return air is blocked, make sure debris is not blocking the intake section.
Coil close-offs are not installed. Inspect coil to make sure these parts are on the case.
Clean coil.
Check settings. See Technical Specifications on the data sheet.
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 55% Relative humidity
and a temperature of 75°F.
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 55% Relative humidity
and a temperature of 75°F.
Check if air sweep fans are functioning, check electrical connections.
Close doors correctly.
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