Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 - Manual (Page 17)

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3. Features
a) LED Display and Service Lock-Out
This control board uses twin LED displays to show system details and diagnostic
information. For control board voltage protection, a 3A 125V fuse is incorporated
into the control board circuitry. A service jumper is also provided to protect against
unwanted changes to the unit's settings. This service lock-out jumper is located on the
K151 connector terminals 7 and 8. See "II.D.4. Controls and Adjustments."
b) Compressor Short Cycle Protection
The start circuit of the compressor is timed such that at power-up and during any
compressor off time, there will be at least a 2 minute delay before the compressor will
start. This protects the compressor against short cycling and potential compressor
damage or failure. To bypass the 2 minute compressor delay timer (for unit
diagnostics), press and hold the rail "SET" button and move the power switch to the
"ON" position.
c) Alarm Signal
Alarm signals (E1 to E9, EA and ED) are designed to protect the unit and food
product. These alarms give information or warnings in the event the unit is operating
out of acceptable parameters. See "III.A. Alarm Signals."
d) Service Menu
A service menu (F0 to F9) allows for viewing and setting of system operating details
and parameters. See "II.D.5. Service Menu."
e) Automatic and Manual Defrost Capabilities
This unit features automatic and manual cabinet defrost capabilities. See "II.D.4.d)
Cabinet Defrost."