Hoshizaki 73168 Refrigerator User Manual


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6. Condenser Thermistor Malfunction Alarm (E9)
Ifthecontrolboarddetectsanopencondenserthermistor,"E9"isdisplayed.Whenthe
control board detects a shorted condenser thermistor, a 10-minute delay timer begins.
Afterthe10‑minutedelaytimerexpires,"E9"isdisplayed.Tobypassthe10‑minute
delaytimer,movethepowerswitchtothe"OFF"position.Then,whilepressingtherail
"SET"button,movethepowerswitchtothe"ON"position.
•Ifthisalarmappears,rstmakesurethatthethermistorisproperlyconnectedtothe
control board.
•Ashortedcondenserthermistorisnotdetectedbythecontrolboardduringthe1sthour
after power is turned on. To bypass the 1-hour delay timer, move the power switch to
the"OFF"position.Then,whilepressingtherail"SET"button,movethepowerswitch
tothe"ON"position.
Reset Options
The"E9"alarmautomaticallyresetswhenoneofthefollowingconditionsismet:
•Thecondenserthermistorissecuredtothecontrolboard.
•Thecondenserthermistoriswithinnormaloperatingrange.Fordetails,see"II.
E.ThermistorCheck."
•Afunctioningcondenserthermistorisinstalled.
Possible Causes
•Troublewiththecondenserthermistor.Forcheckoutprocedure,see"II.E.Thermistor
Check."
•Troublewiththecontrolboardreadingthecondenserthermistor.
E9 Alarm (short circuit) Reset
Under 10 min.
E9 Alarm (short circuit)
Detection Point
186.8°F (86°C)
Temperature
Display
E9
Blinking
E9 Alarm (open circuit) Reset
E9 Alarm
Timer Start
E9 Alarm
Timer Start
Temperature Display
E9 Alarm (open circuit)
Detection Point
-7.6°F (-22°C)
E9
Blinking
10 min.
E9
Alarm
E9 Alarm
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