Troubleshooting: General Overview - Page 1 Of 2 - Structural Concepts HARMONY HMO7536R User Manual

TROUBLESHOOTING: GENERAL OVERVIEW - PAGE 1 of 2

Product is Drying Out
Doors/Glass Won't Shut
Properly
Case Not Properly Lining
Up
System is not Operating
Condensing Unit Not
Operating.
Case Lights Not Working Be sure ALL lights are plugged in or receptacles capped.
Fans Not Working
Not Holding Temperature The temperature will change during defrost mode but will return to normal.
*TSP = Trained Service Providers
TSP*: Check the relative humidity in the store.
TSP*: Confirm that the case is aligned, level and plumb.
TSP*: See Installation section of Manual for instructions on properly aligning
case and adjusting levelers (alongside other cases).
Confirm that the utility power is on.
Confirm that the MAIN power switch is on.
TSP*: Check the circuit breaker box for tripped circuits.
If cord is used, confirm that unit is properly plugged in.
Controller is in defrost mode (not an alarm). Compressor is running in a
normal condition. See the Temperature Controller section of this manual.
Check that the power is turned on.
TSP*: Review factory time settings on the temperature controller.
Check bulbs for proper installation and connection.
Check for burned out bulbs.
Clean dirt and dust from the bulbs to prevent flickering.
After performing all other checkpoints, if lights are still not working check for
faulty ballasts; this should be performed by a certified electrician.
TSP*: Check that fans are plugged in at the fan shroud.
TSP*: Check for foreign material obstructing fan performance.
Warm product may have been added to the case. Note: Product must be
pre-chilled to 41 °F (5 °C) or less prior to being placed in merchandiser.
Discharge air must not be disrupted or blocked by product.
TSP*: Check that the coil fans are working.
TSP*: Check the evaporator coil for ice build up.
Check that the case is not in the sun or near a heat or air-conditioning vent.
Check that case is NOT located near outside doors. Wide temperature
fluctuation can challenge case's ability to hold internal product temperatures.
Check that the condenser coil is clean (self contained unit).
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