TECH - SPEC'S Technician's Pocket Guide - Hoshizaki America, Inc.
TECH - SPEC'S Technician's Pocket Guide - Hoshizaki America, Inc.
TECH - SPEC'S Technician's Pocket Guide - Hoshizaki America, Inc.
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MANUAL RESET SAFETIES:<br />
The Alpine control board has one manual reset safety. It is<br />
the 127°F high evaporator temperature safety. There is no<br />
indication that the Alpine board is off on this safety. You<br />
will only notice that the unit will restart in the 1 minute fill<br />
cycle when the power switch is shut OFF and Back ON.<br />
This is the only way to reset this safety. If this occurs<br />
check for a hot gas circuit or valve problem, a headmaster<br />
stuck in bypass, hot water entering the unit, or a shorted<br />
thermistor. In case of a shorted thermistor, the unit will not<br />
restart. You will hear a relay click after approximately 2<br />
seconds and the unit will remain off.<br />
The “E” control board can have up to 5 manual reset safeties.<br />
They are outlined in the control board function label.<br />
These safeties shut the unit down and assist the service<br />
technician in diagnosing the problem.<br />
The safeties include audible and visual alarms as follows:<br />
1 Beep = 127ºF (52.8ºC) high evaporator temp. safety.<br />
2 Beeps & orange LED = 2 consecutive 20 minute harvest<br />
cycles.<br />
3 Beeps & yellow LED = 2 consecutive maximum freeze<br />
cycles.<br />
4 Beeps = Short circuit on mechanical bin control circuit.<br />
5 Beeps = Open circuit on mechanical bin control circuit.<br />
To reset either safety, press the white reset button<br />
on the control board with the power ON. Next, proceed<br />
to check the items outlined on the function label.<br />
The items listed on the function label represent the most<br />
common reasons that the safety would function. There<br />
may be other remote possibilities however, the items listed<br />
should be checked first.<br />
VOLTAGE PROTECTION:<br />
Built-in voltage protection for the “E” board will automatically<br />
shut the unit down and beep if either a high or low<br />
voltage problem occurs as follows:<br />
6 Beeps = Low voltage condition.<br />
7 Beeps = High voltage condition.<br />
The high and low voltage protections are the only board<br />
alarms that will automatically restart the unit when the voltage<br />
returns to normal. If constant voltage fluctuation occurs,<br />
additional external voltage protection will be required.<br />
23<br />
12/20/03<br />
12/01/02 2/20/03