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IV. Service Diagnosis
WARNING
• This unit should be diagnosed and repaired only by qualied service personnel to
reduce the risk of death, electric shock, serious injury, or re.
• Risk of electric shock. Use extreme caution and exercise safe electrical practices.
• Moving parts (e.g., fan blade) can crush and cut. Keep hands clear.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after the unit is serviced. Make sure that none have fallen into
the storage bin.
• Make sure all food zones in the icemaker and storage bin are clean after the
unit is serviced. For cleaning procedures, see "VI.B. Cleaning and Sanitizing
Instructions."
A. Ice Production Check
To check production, prepare a bucket or pan to catch the ice and a set of scales
to weigh the ice. After the icemaker has operated for 10 to 20 minutes, catch the ice
production for 10 minutes. Weigh the ice to establish the batch weight. Multiply the
batch weight by 144 for the total production in 24 hours. When conrming production
or diagnosing low production, see "III.C. Performance Data" for typical production
information.
B. Diagnostic Procedure
1. Auxiliary Codes A-1 and Earlier
This diagnostic procedure is a sequence check that allows you to diagnose the electrical
system and components. Before proceeding, check for correct installation, adequate
water pressure (7 to 113PSIG), and proper voltage per unit nameplate. When checking
voltage (115VAC), always choose a neutral (W wire) to establish a good neutral
connection.
1) Move the power switch to the "OFF" position, then unplug the unit from the electrical
outlet.
2) Remove all ice from the storage bin.
3) Remove the rear panels.
4) Remove the front panel and louver. Remove the screws securing the control box, then
gently pull out the control box. Remove the control box cover.
5) Plug the unit back in. Place the power switch in the "ON" position.