Hoshizaki 73180 service manual Bin Control Check

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Diagnosis – Check that UF/S and LF/S open, WCR de-energizes, and WV energizes. If UF/S and/or LF/S do not open, see "IV.D. Float Switch Check and Cleaning." If WV does not energize, check WCR terminal #2 (GY wire) to a neutral (W wire) for 115VAC. If 115VAC is not present, replace WCR. If 115VAC is present, check for continuity through WV solenoid. If open, replace WV. After LF/S opens, check that TDR terminal #9 (R wire) has power and GM, FM, CR, and Comp remain energized until UF/S closes or FT terminates. If not, check TDR. Check that WCR energizes and WV de-energizes when reservoir is full. If not, check WCR, UF/S, and WV. See "IV.D. Float Switch Check and Cleaning."

11)Shutdown (bin full) – Ice fills storage bin to level of BC. BC opens within 10 seconds after ice contact. BCH remains energized. WCR, TDR, GM, FM, CR, and Comp de‑energize.

Diagnosis: When the icemaker is running, hold ice in contact with BC bulb. If the components fail to de‑energize within 10 seconds, check BC. See "IV.C. Bin Control Check."

Legend: BC–bin control thermostat; BCH–bin control heater; Comp–compressor; CR–compressor relay; FM–fan motor; F/S–float switch; FT–90-second fill timer (low water safety; internal to TDR); GM–gear motor; LF/S–lower float switch; TDR–time delay relay; UF/S–upper float switch; WCR–water control relay; WV– inlet water valve

Float Switch

Assembly

Reservoir

Cover

Reservoir

Evaporator

Assembly

Fig. 4

C. Bin Control Check

Drain Plug

Drain Clamp

Drain Hose

Upper Rear Panel

1)Move the power switch to the "ON" position to start the automatic icemaking process.

2)To confirm BC operation, hold ice in contact with BC bulb. If the icemaker does not shut down within 10 seconds, BC must be adjusted. For BC thermostat location, see Fig. 1. Installations at higher altitude locations are more likely to require adjustment. If BC will not shut down the unit even after being adjusted, replace BC. NOTICE! Some units contain a sticker that states: "The bin control heater has been disconnected. DO NOT reconnect the bin control heater." In this case, leave BCH disconnected or replace BC assembly with 3A2561A03.

Legend: BC–bin control thermostat

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Contents 100BAF-DS 100BAF-AD 100BAF-ADDS Hoshizaki AMERICA, INC Contents Page Important Safety Information Page Auxiliary Codes A-1 and Earlier Specifications 100BAFAuxiliary Codes A-2 and Later 100BAF-DS 100BAF-DS, 2. Auxiliary Codes A-2 and Later 100BAF-AD 100BAF-AD, 2. Auxiliary Codes A-2 and Later 100BAF-ADDS 100BAF-ADDS, 2. Auxiliary Codes A-2 and Later Auxiliary Codes II. General Information ConstructionFront Auxiliary Codes RearIcemaking Unit Freeze Cycle Sequence of OperationFill Cycle Auxiliary Codes A-1 and Earlier Auxiliary Codes A-2 and Later Auxiliary Codes A-2 and Later Wiring DiagramIcemaker with Optional Drain Pump HS-0248 100BAF Series Performance DataIV. Service Diagnosis Diagnostic ProcedureIce Production Check Page Auxiliary Codes A-2 and Later Bin Control Check Float Switch Check Lower Float white Plastic Retainer Clip Float Switch CleaningOptional Drain Pump HS-0248 OverviewDrain Pump Check Priming Instructions Float Switch Cleaning No Ice Production Possible Cause Startup Diagnostic ChartsShutdown Fill Cycle and Refill Cycle Shutdown Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-134a BrazingComponent Important Notes for Component ReplacementRemoval and Replacement of Evaporator Assembly Components Upper Bearing Wear Check Removal and Replacement of Extruding Head Removal and Replacement of Auger Removal and Replacement of Evaporator Page 5b. Lower Housing Page VI. Maintenance Frequency Area Task Maintenance ScheduleCleaning Solution Cleaning and Sanitizing InstructionsPage Sanitizing Solution Page Cleaning Solution Page Sanitizing Solution Storage Bin Drain Condenser Auxiliary Codes A-1 and Earlier Skip to step VII. Preparing the Icemaker for Periods of Non-UseVIII. Disposal
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