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TROUBLE SHOOTING GUIDE

This guide is recommended for use by a quali

fi

 ed service technician familiar with electrical 

commercial equipment.

1.  Unit does not operate.

 

-  Be sure unit is plugged into correct supply voltage.

 

-  Be sure power switch is turned on.

 

-  Disconnect power cord and check power switch and wiring connections for bad connections.

2.  Unit turns on but unit light or blower does not come on.  Blower and light should always 

be on whenever unit is energized.

 

-  If the light is not on, check and replace the light bulb with a standard 75 watt bulb.

 

-  If the blower is not on, turn off power switch and disconnect power cord.  Check wiring to blower 

motor.  Check motor to see if it turns freely.  Check motor and replace blower if showing an open 
circuit on continuity test.

3.  Center rotisserie motor does not work.  Motor will turn only when door is closed 

completely.

 

-  Check for door magnet on top door glass.  This energizes a proximity switch in the unit when the 

door is closed.  If it is not there it must be replaced to energize motor.  If it is there and motor does 
not work, try repositioning on door glass to energize motor.  If this fails then check rotisserie motor 
and wire connections.  Also check proximity switch by doing a continuity check on switch with 
door closed.  If switch is working on a closed door then the rotisserie motor must be checked and 
replaced if necessary.

4.  Unit turns on, everything works but cabinet does not heat up.

 

-  Check electronic control on top front of unit.  Verify that the unit is set for a warmer air temperature 

than room temperature.  Set it for 140°.

 

-  If unit does not heat up after operating for several minutes, several things must be checked to 

determine the cause.
a. 

With the control set at 140°F, check the power to the air heater element relay from the 
control board.  It should be about 12 V.D.C. to the relay coil.  If it is then the board and the 
air temperature thermistor sensor are working.  If not then the sensor and board must be 
checked.  The sensor should read about 4,000-5,000 ohms at room temperature.  Resistance 
on the probe will drop as the temperature increases.  If it reads open then replace it.  To 
check the board, install a 5,000 ohm 1/2 watt resistor for the suspect sensor.  The board 
should supply 12 V.D.C. power to the relay.  If it doesn't, then the board is defective.

b. 

If the relay is getting energized by the board and the air heater element is still not working, 
check the voltage out of the power side of the relay.  It should be 0 VAC.  If not, then replace 
the relay.

 

-  If relay is working and the wiring is all intact and tightly connected, then the heating element must 

be checked.

 

-  Disconnect heating element and check for continuity.  You should measure a low ohms reading 

like 15-20 ohms.  If nothing, then replace heating element.

Summary of Contents for HFD2A

Page 1: ...1 HOT FOOD HUMIDITY CABINET MODEL HFD2A 120V 230V HFD3A 120V 230V Installation and Operation Instructions 2M Z3437 Rev L 1 17 07 HFD2A 230V ONLY ...

Page 2: ...in information provided or conclusions reached as a result of using the specifications By using the information provided the user assumes all risks in connection with such use MAINTENANCE AND REPAIRS Contact your local authorized service agent for service or required maintenance Please record the model number serial number voltage and purchase date in the area below and have it ready when you call ...

Page 3: ...61 28 cm W x 71 44 cm D x 91 44 cm H RECOMMENDED CONTROL SETTINGS AND HOLDING TIMES Chefs cooks and other specialized food service personnel employ varied methods of cooking Proper holding temperatures for a specific food product must be based on the moisture content of the product density volume and proper serving temperatures Safe holding temperatures must also be correlated with palatability in...

Page 4: ...is scaling will coat the inside of the reservoir and waterlines of your Hot Food Humidity Cabinet Therefore STAR Manufacturing recommends using distilled water for the prevention of scaling in your equipment This will prolong the life of your STAR equipment CAUTION DO NOT CONNECT TO ANY OTHER TYPE OF CURRENT SOURCEORTHEMACHINEWILL BE SERIOUSLY DAMAGED The guarantee of this machine covered by the w...

Page 5: ... Switch Activates lights digital thermometer and air circulation system 4 Low Water Light When the light is ON this indicates that water must be added The fill light will also come on Element shuts OFF until water is added 4 175F 6 5 150F 5 6 150F 5 To select Pre Sets press and hold MODE then press SELECT to toggle through pre sets Stop on the desired pre set setting For specific food products see...

Page 6: ...racket while holding door Replace screws in holes Keep the bracket for installation on the right side 2 Lift door carefully off of bottom pin bracket and set down 3 Remove the bottom pin bracket by removing the 2 bottom screws Replace screws in holes Keep the bracket for installation on the right side 4 For models using the rotating pizza or pretzelracksonly removetherectangular bracket magnet ass...

Page 7: ...couring pads 2 Daily cleaning of inside glass bottom pan and racking system with a damp cloth is required CAUTION Besurecabinethascooleddownpriortoopeningdrain to avoid burning fingers while unscrewing plug 3 It is required that the water reservoir be drained daily and re filled with fresh water This can be done by placing a 5 quart container under the drain plug and un screwing the drain plug ...

Page 8: ...orking on a closed door then the rotisserie motor must be checked and replaced if necessary 4 Unit turns on everything works but cabinet does not heat up Check electronic control on top front of unit Verify that the unit is set for a warmer air temperature than room temperature Set it for 140 If unit does not heat up after operating for several minutes several things must be checked to determine t...

Page 9: ...or water heating element Check and make sure unit is full of water If yes then shut off the power switch and disconnect power cord Remove top and check the water sensor board 3 connections on water tank Remove sensor board and verify the 2 sensor rods are attached to the underside of board The long rod should be attached to the terminal connector marked L for low water indicator The short rod to t...

Page 10: ... any other non food object tha comes in continuous contact with the roller coating This warranty does not apply to the non stick properties of such materials This warranty does not apply to Special Products but to regular catalog items only Star s warranty on Special Products is six 6 months on parts and ninety 90 days on labor This warranty does not apply to any item that is disassembled or tampe...

Page 11: ... WATER SENSOR TRANSFORMER WATER RELAY AIR RELAY N O N O COM COM 120 V 10 V CIRCUIT BOARD WATER LEVEL SENSOR H RED L BLACK G GREEN LIGHTED WHITE BLACK RED MOTOR M BLUE WHITE 230 240V CONFIGURATION A 240 V 120V CONFIGURATION WHITE MOTOR BLACK M RED WHITE BLUE A BLUE RED YELLOW MODEL HFD 2A THIS DRAWING CONTAINS INFORMATION CONFIDENTIAL TO STAR MFG INT L INC NO REPRODUCTION OR DISCLOSURE OF ITS CONTE...

Page 12: ...ACK M RED WHITE BLUE A A AIR ELEMENT WATER ELEMENT E6 E2 E1 E3 E4 E5 HI LO GND E10 E13 E11 E12 INDICATOR HIGH WATER GROUND AIR SENSOR WATER SENSOR TRANSFORMER RELAY RELAY N O N O COM COM 120 V 10 V CIRCUIT BOARD WATER LEVEL SENSOR H L G LIGHTED 240 V A C B D A MODEL HFD 3A THIS DRAWING CONTAINS INFORMATION CONFIDENTIAL TO STAR MFG INT L INC NO REPRODUCTION OR DISCLOSURE OF ITS CONTENTS IS PERMITTE...

Page 13: ... CONTROL PANEL CERTAIN INSTANCES MAY NOT BE AVAILABLE ILLUSTRATIVE PURPOSES ONLY AND IN SOME ITEMS ARE INCLUDED FOR MODEL HFD 2 THIS DRAWING CONTAINS INFORMATION CONFIDENTIAL TO STAR MFG INT L INC NO REPRODUCTION OR DISCLOSURE OF ITS CONTENTS IS PERMITTED STAR MANUFACTURING INTERNATIONAL INC SK1858 Rev 04 26 2001 ...

Page 14: ...PT IONA L CHIC KEN OPT IONA L SAN DWIC HES P S 2 P S 3 PRE SET 1 PRE SET 2 PRE SET 3 PRE SET 4 PRE SET 5 PRE SET 6 SELE CT BRE AD PRO DUC TS PIZZ A P S 6 P S 5 P S 4 FIL L OFF TO DISPLAY HUMIDIT Y SETTING TO SET CABINE T TEMPER ATURE TO SET HUMIDIT Y TO SET DIFFERE NT PRESET OR PRESS TO EXIT PROGRA M FUNCTIO N SELECT AND TO TOGGLE THROUG H PRESET S THEN PRESS MODE TO CHANGE THE SETTING MODE MODE A...

Page 15: ... TER OPT ION AL CHI CKE N OPT ION AL SAN DWI CHE S P S 2 P S 3 PRE SET 1 PRE SET 2 PRE SET 3 PRE SET 4 PRE SET 5 PRE SET 6 SELE CT BRE AD PRO DUC TS PIZZ A P S 6 P S 5 P S 4 FIL L OF F TO DISPLA Y HUMIDI TY SETTING TO SET CABINE T TEMPER ATURE TO SET HUMIDI TY TO SET DIFFER ENT PRESET OR PRESS TO EXIT PROGR AM FUNCT ION SELECT AND TO TOGGLE THROU GH PRESET S THEN PRESS MODE TO CHANG E THE SETTING ...

Page 16: ...ER HFD 3A 13 2M Z4180 1 LABEL OPERATOR PANEL HFD 2A 2M Z4181 1 LABEL OPERATOR PANEL HFD 3A 14 D5 HFD014 1 2 TOP DOOR BRACKET ASSEMBLY 15 D5 HFD032 1 2 GLASS DOOR ASSEMBLY w MAGNET HFD 2A 2APT D5 HFD033 1 2 GLASS DOOR ASSEMBLY w MAGNET HFD 3A 3APT NI 2R Z3494 1 MAGNET DOOR 16 D5 HFD017 1 2 BOTTOM DOOR BRACKET ASSEMBLY 17 D5 Z3573 1 BOTTOM REAR CUSTOMER HFD 2A D5 Z3418 1 BOTTOM REAR CUSTOMER HFD 3A ...

Page 17: ...GLE LEFT HFD 2A D5 Z0309 1 RACK ANGLE LEFT HFD 3A 40 D5 Z4436 1 DOOR RACK ANGLE RIGHT HFD 2A D5 Z0286 1 DOOR RACK ANGLE RIGHT HFD 3A 41 D5 Z4438 1 RACK ANGLE RIGHT HFD 2A D5 Z0310 1 RACK ANGLE RIGHT HFD 3A 42 D5 220055 1 PRETZEL SHAFT HFD 2A D5 220058 1 PRETZEL SHAFT HFD 3A 43 2B Z7205 3 PRETZEL HOLDER HFD 2A 2B Z7206 4 PRETZEL HOLDER HFD 3A 44 2B Z4279 3 PIZZA SHELF HFD 2A 2B Z4280 4 PIZZA SHELF ...

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Page 20: ...STAR MANUFACTURING 10 Sunnen Drive St Louis MO 63143 U S A 800 807 9054 314 781 2777 Parts Service 800 807 9054 www star mfg com ...

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