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b) Control Module with Integrated Display

To change the temperature display scale, follow the steps below.

1) Press and hold both the up and down buttons for 5 sec. "PAS" appears briefly in the

display, then "000" appears.

2) Press the up button to change the display to "001".
3) Press the SC button. "

EHE

" appears in the display. Press the up or down button until

"diS" is displayed.

4) Press the SC button. "CFu" appears in the display. Press the SC button again. The

current temperature display scale setting appears.

5) Press the up or down button to change the temperature display scale.
6) Press the SC button to save the setting. Wait 1 min. or press the manual defrost button

twice to return to the temperature display.

C. Defrost

1. Control Module with Remote Display Module

To initiate a manual defrost, press and hold the lower button for 5 sec. "dEF" appears

in the display.

2. Control Module with Integrated Display

To initiate a manual defrost, press the manual defrost button briefly. The defrost icon
and "dEF" appear in the display.

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Содержание CF1B-FG

Страница 1: ... A Superior Degree of Reliability www hoshizaki com Models Reach In B Series Commercial Series Refrigerated Kitchen Equipment Hoshizaki America Inc Number 73183 Issued 3 23 2011 Revised 12 12 2012 SERVICE MANUAL ...

Страница 2: ...on is not covered under warranty Hoshizaki provides this manual primarily to assist qualified service technicians in the service and maintenance of the appliance Should the reader have any questions or concerns which have not been satisfactorily addressed please call send an e mail message or write to the Hoshizaki Technical Support Department for assistance Phone 1 800 233 1940 770 487 2331 Fax 1...

Страница 3: ...egrated Display 22 C Control Module Check 26 1 Control Module with Remote Display Module 26 2 Control Module with Integrated Display 27 D Thermistor Check 28 E Diagnostic Tables 29 1 Not Cooling 29 2 Evaporator Frozen Up 30 3a Defrost Control Module with Remote Display Module 30 3b Defrost Control Module with Integrated Display 31 III Controls and Adjustments 32 A Control and Display Modules 32 1 ...

Страница 4: ...s 41 A Service for Refrigerant Lines 41 1 Refrigerant Recovery 41 2 Brazing 42 3 Evacuation and Recharge 42 B Important Notes for Component Replacement 44 C Door Reversal 44 V Maintenance 45 1 Condenser 45 2 Power Supply Connection 45 VI Preparing the Appliance for Periods of Non Use 46 VII Disposal 47 VIII Technical Information 48 A Electrical and Refrigerant Data 48 B Wiring Diagrams 49 ...

Страница 5: ...pliance must be installed in accordance with applicable national state and local codes and regulations The appliance requires an independent power supply of proper capacity See the nameplate for electrical specifications Failure to use an independent power supply of proper capacity can result in a tripped breaker blown fuse or damage to existing wiring This could lead to heat generation or fire To...

Страница 6: ...plash pour or spray water directly onto or into the appliance This might cause short circuit electric shock corrosion or failure Do not make any alterations to the appliance Alterations could result in electric shock injury fire or damage to the appliance The appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience a...

Страница 7: ... wrapped in plastic film or stored in sealed containers Otherwise foods may dry up pass their smells onto other foods cause frost to develop result in poor appliance performance or increase the likelihood of cross contamination Certain dressings and food ingredients if not stored in sealed containers may accelerate corrosion of the evaporator resulting in failure Do not store items near the air ou...

Страница 8: ...oor Gasket Control Box Power Switch Door Lock Model Shown CR1B FS Light Compressor Power Cord Door Switch Evaporator Cabinet Thermistor Defrost Thermistor Evaporator Fan Shroud Thermostatic Expansion Valve Light Switch glass door models only Control Module with Remote Display Module Condensate Pump Reservoir and Condensate Pump Float Switch ...

Страница 9: ...ostatic Expansion Valve Compressor Low Side Access Valve Condensate Pan High Pressure Switch Drier Condenser Fan Condenser Defrost Thermistor Defrost Heater and Defrost Thermostat freezer only Cabinet Thermistor High Side Access Valve Condensate Pump Reservoir Condensate Pump Float Switch ...

Страница 10: ...nergized ConFM de energized 5 Defrost Termination DTh warms to 40 F 4 4 C Note a EvapFM de energizes when door is opened on FS models and when upper door is opened on HS models b 2 min minimum Comp on timer starts when Comp energizes c 2 min minimum Comp off timer starts when Comp de energizes d 20 min minimum defrost time e 1 hr maximum defrost time Control Module with Remote Display Module f 2 m...

Страница 11: ...es c 2 min minimum Comp off timer starts when Comp de energizes d 5 min minimum defrost time e 1 hr maximum defrost time f 3 min Comp ConFM delay timer starts when defrost termination temperature is met Control Module with Remote Display Module g 8 minute EvapFM delay timer starts when defrost termination temperature is met 3 minute delay timer when defrost initiated manually h 13 minute temperatu...

Страница 12: ...r other high heat producing equipment The appliance must not be located in a corrosive environment The appliance must be a minimum of 4 11 cm from side walls A minimum of 10 25 cm overhead clearance must be provided for proper ventilation The diagnostic procedure is a sequence check that allows you to diagnose the electrical system and components Before proceeding check for correct installation an...

Страница 13: ...n Comp off time 1 Move the power switch to the OFF position 2 Unplug the appliance from the electrical outlet 3 Remove the control box cover 4 Plug the appliance back into the electrical outlet 5 Move the power switch to the ON position 6 Confirm 115VAC at the power switch On 3 section models also confirm proper supply voltage at the receptacle box 115VAC for refrigerator 208 230VAC for freezer Co...

Страница 14: ...ce CM and DM with HS kit d Comp and ConFM Diagnosis Confirm Comp and ConFM energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is not present at CM C1 R to neutral W check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM and DM with HS kit If 115VAC is present at CM C1 R to neutral W check continuity of HPS If open allow time for HPS to reset If ...

Страница 15: ...emperature display delay timer starts 2 min later cabinet temperature appears on DM Defrost Diagnosis a Defrost Initiation Has DTh cooled to 8 6 F 13 C or lower Confirm DTh status See II D Thermistor Check If DTh is in proper range or manual defrost initiated confirm Comp and ConFM de energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is present and DTh is within proper range repla...

Страница 16: ...nFM Diagnosis Confirm Comp and ConFM energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is not present at CM C1 R to neutral W check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM If 115VAC is present at CM C1 R to neutral W check continuity of HPS If open allow time for HPS to reset If HPS does not reset see e HPS Activation below If HPS is c...

Страница 17: ...energize Cabinet temperature is displayed during defrost 2 Defrost Termination DTh warms to 40 F 4 4 C EvapFM and MH continue Comp and ConFM energize Defrost Diagnosis a Defrost Initiation Has DTh cooled to 8 6 F 13 C or lower Confirm DTh status See II D Thermistor Check If DTh is in proper range or manual defrost initiated confirm Comp and ConFM de energize If not check for 115VAC at CM C1 R to n...

Страница 18: ... W replace DSR If 115VAC is present at DSR 4 DBU to neutral W check EvapFM blades for binding and EvapFM continuity d Comp and ConFM Diagnosis Confirm Comp and ConFM energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is not present check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM and DM with HS kit If 115VAC is present at CM C1 R to neutra...

Страница 19: ...p ConFM and EvapFM de energize 1b Manually Initiated To initiate a manual defrost press and hold the lower button for 5 seconds dEF appears in the display MH and PH continue DH and DrH energize Comp ConFM and EvapFM de energize 2a Temperature Time Initiated Defrost Termination 1 DTh warms to 59 F 15 C dEF MH and PH continue DH and DrH de energize 3 min Comp ConFM delay timer starts 8 min EvapFM de...

Страница 20: ...es not close replace DT If DT is closed check DH and DrH amp draw and continuity 3 Comp and ConFM Diagnosis Confirm Comp and ConFM de energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is present replace CM and DM with HS kit If 115VAC is not present and Comp and ConFM continue check CR 1 R to neutral W If 115VAC is present replace CR 4 EvapFM Diagnosis Confirm EvapFM de energizes ...

Страница 21: ...stor Check If CTh ohm reading is in proper range replace CM and DM with HS kit If 115VAC is present check for 115VAC at CR 4 BK to neutral W and CR 1 R to neutral W If 115VAC is present at CR 4 BK to neutral W but not at CR 1 R to neutral W replace CR If 115VAC is present at CR 1 R and Comp or ConFM are not energized check Comp start components Comp protector internal on 1 section external on 2 se...

Страница 22: ...FM blades for binding and EvapFM continuity d Comp and ConFM Diagnosis Confirm Comp and ConFM energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is not present check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM If 115VAC is present at CM C1 R to neutral W check continuity of HPS If open allow time for HPS to reset If HPS does not reset see e...

Страница 23: ...layed MH and PH continue DH and DrH energize Comp and EvapFM icons turn off Comp ConFM and EvapFM de energize 2a Temperature Time Initiated Defrost Termination 1 DTh warms to 59 F 15 C Defrost icon dEF MH and PH continue DH and DrH de energize 3 min Comp delay timer starts 7 min EvapFM delay timer starts and 18 min temperature display delay timer starts 2 3 min Comp delay timer terminates dEF MH a...

Страница 24: ...oes not close replace DT If DT is closed check DH and DrH amp draw and continuity 3 Comp and ConFM Diagnosis Confirm Comp and ConFM de energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is present replace CM If 115VAC is not present and Comp and ConFM continue check CR 1 R to neutral W If 115VAC is present replace CR 4 EvapFM Diagnosis Confirm EvapFM de energizes If not check for 1...

Страница 25: ...nFM operation Comp and ConFM Check for 115VAC at CM C1 R to neutral W If 115VAC is not present check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM If 115VAC is present check for 115VAC at CR 4 BK to neutral W and CR 1 R to neutral W If 115VAC is present at CR 4 BK to neutral W but not at CR 1 R to neutral W replace CR If 115VAC is present at CR 1 R and Comp ...

Страница 26: ... for 115VAC at CM L3 BK to CM N5 neutral W If 115VAC is not present check power supply wiring connections and power switch continuity 4 Check that the cabinet temperature is displayed on DM If not and DM cable is connected replace DM and CM with HS kit 5 Freezer Check that EvapFM is energized Make sure doors are closed and DS engaged Next check for 115VAC at CM F6 BK to neutral W If 115VAC is not ...

Страница 27: ...ere is a good power supply and neutral connection to CM 115VAC at CM L2 BK to CM N3 W Alarm Reset To silence the alarm press and release the up button with power on For alarm information see III D Alarm Safeties Startup Cool Down 1 Check all wiring connections Confirm the CTh and DTh are properly connected 2 Move the power switch to the ON position 3 Check for 115VAC at CM L2 BK to CM N3 neutral W...

Страница 28: ...istors to control system operation No adjustment is required In the event the cabinet thermistor reading is out of range E1 alarm the compressor operates on a fixed time basis of 5 min on and 5 min off In the event the refrigerator defrost thermistor reading is out of range E2 alarm defrost initiation occurs every 4 hr of cumulative compressor run time and terminates on 20 min minimum defrost time...

Страница 29: ...dule See III D Alarm Safeties and II C Control Module Check a In alarm or shown on display module on models with remote display module b Defective 6 Door Switch a Not engaged b Defective 7 Door Switch Relay a Loose connection b Defective 8 Evaporator Fan Motor a Defective 9 High Pressure Switch a Dirty condenser b Ambient temperature too warm c Condenser fan motor not operating d Refrigerant overc...

Страница 30: ...st Fails to Terminate Possible Cause 1 Defrost Thermistor Confirm DTh status See II D Thermistor Check a Defrost termination temperature 40 F 4 4 C not achieved b Defective 2 Compressor Relay a Defective 3 Control Module a Defrost thermistor connection loose b Defective Freezer Defrost Fails to Initiate Possible Cause 1 Defrost Thermistor Confirm DTh status See II D Thermistor Check a Defrost init...

Страница 31: ...efective 3 Control Module a Defrost thermistor connection loose b Defective Freezer Defrost Fails to Initiate Possible Cause 1 Defrost Thermistor Confirm DTh status See II D Thermistor Check a Defrost initiation temperature 32 F 0 C not achieved See 1 Not Cooling b Out of position or defective 2 Compressor 4 hr cumulative run timer not satisfied a Check compressor operation See 1 Not Cooling 3 Con...

Страница 32: ...erature display scale can be changed Note When exposed to high temperatures a high temperature alarm Hi may occur at start up To silence the alarm press and release the upper button Alarm clears once temperature is within factory parameters For details see III D Alarm Safeties 1 Control Module with Remote Display Module a Remote Display Module Layout Display Module Upper and Lower Buttons Fig 2 LE...

Страница 33: ...onnect terminals Do not short out power supply to test for voltage Display Cable Fig 3 Freezer Control Module Cabinet Thermistor Defrost Thermistor C1 Compressor R L3 Power Supply BK N5 Neutral W To Display Module C1 Compressor R L3 Power Supply BK N5 Neutral W F6 Evaporator Fan Motor BK H4 Defrost Heater BK Display Cable Cabinet Thermistor Defrost Thermistor To Display Module Refrigerator Control...

Страница 34: ...ing and connections Never misconnect terminals Do not short out power supply to test for voltage a Display Icons Control Module Icons Icon Meaning Compressor Compressor running Defrost Appliance is in defrost cycle See II B Service Diagnosis for details Evaporator Fan Motor Icon is Applicable to Freezers Only Evaporator fan motor is running Evaporator fan motor de energizes when door is open and w...

Страница 35: ...r Defrost Thermistor Cabinet Thermistor Defrost Thermistor C1 Compressor R L2 Power Supply BK N3 Neutral W F5 Evaporator Fan Motor Y Freezer H4 Defrost Heater O Freezer c Control Module with Integrated Display Connections ...

Страница 36: ...or comes on at 39 F 3 7 C and the compressor goes off at 33 F 0 3 C If necessary adjust the temperature setpoint as follows 1 Press and hold the upper or lower button briefly then release The current temperature setpoint flashes 2 Press the upper or lower button until the desired value is displayed After a few sec the display returns to the current cabinet temperature and the temperature setpoint ...

Страница 37: ...n the display Press the SC button again The current temperature display scale setting appears 5 Press the up or down button to change the temperature display scale 6 Press the SC button to save the setting Wait 1 min or press the manual defrost button twice to return to the temperature display C Defrost 1 Control Module with Remote Display Module To initiate a manual defrost press and hold the low...

Страница 38: ...age protection operates The voltage safeties automatically reset when voltage is corrected ULo Low Voltage Alarm 96VAC 5 or less Hi High Temperature Alarm Note When power is turned on a high temperature alarm may occur Refrigerator Cabinet temperature has exceeded the setpoint temperature by 10 F 5 6 C for more than 2 hr Freezer Cabinet temperature has exceeded the setpoint temperature by 27 F 15 ...

Страница 39: ... Refrigerator Cabinet temperature has remained above 57 F 13 9 C for more than 2 hr Freezer Cabinet temperature has remained above 26 F 3 3 C for more than 2 hr Beeps for 10 sec then silent for 50 sec To silence the alarm and clear Hi from the display press and release the up button The alarm icon stays on Automatically resets when temperature returns to normal Lo Low Temperature Alarm Refrigerato...

Страница 40: ...ee II B Service Diagnosis On refrigerators the compressor external protector is integrated with the start relay On 1 section freezers the compressor protector is an internal protector On 2 section freezers the compressor protector is an external protector 2 Short Cycle Protection There is a 2 min minimum off time and on time for the compressor Note Time may vary with compressor protector or high p...

Страница 41: ...ressure using nitrogen gas 140 PSIG DO NOT use R 134a or R 404A as a mixture with pressurized air for leak testing NOTICE Do not leave the system open for longer than 15 min when replacing or servicing parts The Polyol Ester POE oils used in R 134a and R 404A appliances can absorb moisture quickly Therefore it is important to prevent moisture from entering the system when replacing or servicing pa...

Страница 42: ...nstall the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 2 Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure ...

Страница 43: ...ng an R 134a system Place the service cylinder on the scales if the service cylinder is not equipped with a dip tube invert the service cylinder then place it on the scales Open the high side valve on the gauge manifold 7 Allow the system to charge with liquid until the proper charge weight is met 8 If necessary add any remaining charge to the system through the low side NOTICE To prevent compress...

Страница 44: ... defrost thermistor wire is not touching the defrost heater Control Module w Remote Display If three dashes appear on the display module when energized the compressor and display module are off To turn the compressor and display module on press and hold the upper and lower buttons until the temperature appears on the display NOTICE The three dashes must be cleared otherwise the compressor will not...

Страница 45: ...ric shock do not touch the power switch or plug with damp hands Before performing maintenance move all foods into another clean refrigerator or freezer 1 Condenser Check the condenser once a year and use a brush or vacuum cleaner to clean the condenser as required 2 Power Supply Connection If a plug power cord or receptacle three section models is damaged replace it Be sure to connect the ground w...

Страница 46: ...o the OFF position and unplug the appliance Do not plug in unplug the appliance to start stop operation Make sure the power switch is in the OFF position before plugging in or unplugging the appliance to reduce the risk of electric shock 1 Before shutting down the appliance move the stored food into another refrigerator or freezer 2 Reach over the front panel and move the power switch to the OFF p...

Страница 47: ...f children getting trapped Leave the shelves in place so that children may not easily climb inside The appliance contains refrigerant and must be disposed of in accordance with applicable national state and local codes and regulations Refrigerant must be recovered by properly certified service personnel ...

Страница 48: ...1 CF1B FG FS HS 9 450 250 8 CR2B FG FS HS 7 240 120 12 CF2B FG FS HS 11 450 250 17 CR3B FS HS 115 60 1 9 240 120 1 Section 11 2 Section 12 CF3B FS HS 208 230 115 60 1 16 450 250 1 Section 8 2 Section 17 See the nameplate for electrical and refrigerant data The nameplate is located inside the cabinet We reserve the right to make changes in specifications and design without prior notice ...

Страница 49: ...49 High Pressure Switch Cut out 270 10 PSIG Cut in 190 20 PSIG B Wiring Diagrams 1a CR1B FG Auxiliary Code A 5 to B 5 A Control Module with Remote Display Module ...

Страница 50: ...50 1b CR1B FG Auxiliary Code B 5 B and Later High Pressure Switch Cut out 300 10 PSIG Cut in 190 20 PSIG Control Module with Integrated Display ...

Страница 51: ...51 High Pressure Switch Cut out 270 10 PSIG Cut in 190 20 PSIG 2a CR1B FS HS CR3B FS HS Auxiliary Code V 5 to B 5 A Control Module with Remote Display Module ...

Страница 52: ...52 2b CR1B FS HS CR3B FS HS Auxiliary Code B 5 B and Later High Pressure Switch Cut out 300 10 PSIG Cut in 190 20 PSIG Control Module with Integrated Display ...

Страница 53: ...53 High Pressure Switch Cut out 270 10 PSIG Cut in 190 20 PSIG 3a CR2B FG Auxiliary Code A 5 Control Module with Remote Display Module ...

Страница 54: ...54 3b CR2B FG Auxiliary Code B 6 and Later High Pressure Switch Cut out 300 10 PSIG Cut in 190 20 PSIG Control Module with Integrated Display ...

Страница 55: ...ure Switch Cut out 270 10 PSIG Cut in 190 20 PSIG 4a CR2B FS and CR3B FS Auxiliary Code V 5 to B 5 B CR2B HS Auxiliary Code A 5 to B 5 A CR3B HS Auxiliary Code A 5 to B 5 C Control Module with Remote Display Module ...

Страница 56: ...R3B FS Auxiliary Code B 5 C and Later CR2B HS Auxiliary Code A 5 to B 5 B and Later CR3B HS Auxiliary Code B 5 D and Later High Pressure Switch Cut out 300 10 PSIG Cut in 190 20 PSIG Control Module with Integrated Display ...

Страница 57: ...t Thermostat Cut out 120 F 5 F 49 C 3 C Cut in 70 F 5 F 21 C 3 C High Pressure Switch Cut out 490 10 PSIG Cut in 370 20 PSIG 5a CF1B FG Auxiliary Code B 5 C and Earlier Control Module with Remote Display Module ...

Страница 58: ...rost Thermostat Cut out 120 F 5 F 49 C 3 C Cut in 70 F 5 F 21 C 3 C High Pressure Switch Cut out 490 10 PSIG Cut in 370 20 PSIG 5b CF1B FG Auxiliary Code B 5 D and Later Control Module with Integrated Display ...

Страница 59: ...High Pressure Switch Cut out 490 10 PSIG Cut in 370 20 PSIG A 5 G and later 6a CF1B FS and CF3B FS one section side Auxiliary Code A 5 to B 5 B CF1B HS Auxiliary Code A 5 to B 5 A CF3B HS one section side Auxiliary Code B 6 and Later Control Module with Remote Display Module ...

Страница 60: ... B 5 B CF1B HS Auxiliary Code A 5 to B 5 A CF3B HS one section side Auxiliary Code B 6 and Later Defrost Thermostat Cut out 120 F 5 F 49 C 3 C Cut in 70 F 5 F 21 C 3 C High Pressure Switch Cut out 490 10 PSIG Cut in 370 20 PSIG Control Module with Integrated Display ...

Страница 61: ... C Cut in 70 F 5 F 21 C 3 C High Pressure Switch Cut out 490 10 PSIG Cut in 370 20 PSIG A 5 G and later 7a CF2B FS and CF3B FS two section side Auxiliary Code A 5 to B 5 A CF2B HS Auxiliary Code A 5 to B 5 Control Module with Remote Display Module ...

Страница 62: ...ode B 5 B and Later CF2B HS and CF3B HS two section side Auxiliary Code B 6 and Later Defrost Thermostat Cut out 120 F 5 F 49 C 3 C Cut in 70 F 5 F 21 C 3 C High Pressure Switch Cut out 490 10 PSIG Cut in 370 20 PSIG Control Module with Integrated Display ...

Страница 63: ...63 8 CR3B FS HS Receptacle Box Connection 9 CF3B FS HS Receptacle Box Connection Note Only the top receptacles have power Note Only the top receptacles have power ...

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