Hoshizaki KM-1601MRH/3 Ice Maker User Manual


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35
E. Thermistor Check
To check thermistor resistance, follow the steps below.
1) Turn off the power supply.
2)Removethefrontpanel,thenmovethecontrolswitchtothe"OFF"position.
3) Remove the control box cover.
4) Remove the thermistor.
5) Immerse the thermistor sensor portion in a glass containing ice and water for 2 or
3 minutes.
6) Disconnect the white thermistor connector from the control board WHITE K3 connector
and check the resistance between thermistor leads. Normal reading is within 4.7 to
6.2kΩ.Ifoutsidethenormalreading,replacethethermistor.See"V.B.ImportantNotes
forComponentReplacement."Ifinsidethenormalreading,continuetothenextstep.
7)Replacethethermistorinitscorrectposition.See"V.B.ImportantNotesforComponent
Replacement."
8) Reconnect the white thermistor connector to the control board WHITE K3 connector.
9) Replace the control box cover in its correct position, then turn on the power supply.
10)Movethecontrolswitchtothe"ICE"position.
11) Once the harvest cycle starts, begin timing the harvest cycle.
12) The harvest timer should expire and terminate the harvest cycle within 2 to 3 minutes. If
the harvest timer does not expire and terminate the harvest cycle, the harvest timer is
bad and the control board should be replaced.
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