Bosch Evolution 300 Series User manual

The information provided in this document is intended for trained,
qualified personnel only. The proper function and the safety of the
appliance can be affected by an improper repair, and even serious
threats to life or physical condition may arise. BSH Home Appliances
Corporation is not liable for damages caused by improper repairs
performed by unauthorized parties. Local codes and standards apply
and must be observed. Contact the Technical Support Team for
further assistance.
SERVICE MANUAL
for
Bosch(YROXWLRQ
DQGSeries
Free-standing Gas Ranges
Models
HGS3023UC, HGS3053UC, HGS3063UC, and
HGS5053UC
58300000146087 ARA EN A

TABLE OF CONTENT6
1:1 GENERAL INFORMAT ION
1:1 Safe Servicing Practices - All Appliances
1:2 

1:4 Model Number Information
1:4 Explanation of Model Number and Feature Designators
1:4 Data Plate Location
1:5 Gas Cooktop Operation
1:5 Cooktop Configuration and Burner Specifications
1:6 Surface Burner Ignition Process
1:7 Surface Burner Flame Characteristics
1:8 Gas Oven Operation
1:8 Oven Burner Specifications
1:8 Oven Operating Temperatures
1:9 Oven Burner Cycling
1:9 Convection Fan Operation
1:9 Calibrating Oven / Temperature Offsets
1:10 Electronic Oven ontrol Operation
1:10 PowerUp Display
1:10 Service Diagnostic Mode
1:11 Relay and 
1:11 Temperature Sensor Operation and Testing
2:1 SERVICING THE RANGE
2:1 Surface Burners - 300 Series Ranges
2:2 Oval Burner - 500 Series Ranges
2:4 Surface Burner Orifices
2:5 Cooktop Removal
2:7 Surface Burner Igniters
2:8 Surface Burner ontrol Valves
2:11 urface Igniter Spark Module
2:12 Oven Bake Burner
2:14 Bake Burner Igniter
2:14 Bake Burner Orifice
2:15 Oven Broil Burner
2:16 Broil Burner Igniter
2:17 Pressure Regulator
2:18 Surface Burner Flame Adjustment
2:19 Oven Burner Flame Adjustment
2:20 Conversion from Natural Gas to LP Gas
2:24 Oven ontrol Module
2:24 Convection Fan Motor and Blade
2:26 Oven Temperature Sensor
2:27 Oven Door Latch
2:29 Oven Door and Hinges
GND
= GROUND
RTD
= RESISTANCE TEMPERATURE DEVICE
(Temperature Sensor Probe)
2:29 Removing the Door
2:30 Reinstalling the Door
2:31 Servicing the Door
3:1 TROUBLESHOOTING
3:1 Electronic Control Module Failure/Fault Codes - ES337
3:2 Fault Codes from Tech Sheet
3:5 Troubleshooting Tips
3:7 Electronic Control Module Troubleshooting and Testing
3:7 Gas Range Circuit Test Matrix - ES337
3:8 Gas Range Component Testing
3:8 Gas Range Component Resistance Chart
Terms and Abbreviations Used in this Manual

1:1
To avoid personal injury and/or property damage, it is important that Safe Servicing Practices be observed. The following are some limited examples
of safe practices:
1. DO NOT attempt a product repair if you have any doubts as to your ability to complete it in a safe and satisfactory manner.
2. Before servicing or moving an appliance:
• Remove the power cord from the electrical outlet, trip the circuit breaker to the OFF position, or remove the fuse.
• Turn off the gas supply.
• Turn off the water supply.
3. Never interfere with the proper operation of any safety device.
4. USE ONLY REPLACEMENT PARTS CATALOGED FOR THIS APPLIANCE. SUBSTITUTIONS MAY DEFEAT COMPLIANCE WITH
SAFETY STANDARDS SET FOR HOME APPLIANCES.
5. GROUNDING: The standard color coding for safety ground wires is GREEN, or GREEN with YELLOW STRIPES. Ground leads are
not to be used as current carrying conductors. It is EXTREMELY important that the service technician reestablish all safety grounds
prior to completion of service. Failure to do so will create a hazard.
6. Prior to returning the product to service, ensure that:
• All electrical connections are correct and secure
• All electrical leads are properly dressed and secured away from sharp edges, high-temperature components, and moving parts
• All non-insulated electrical terminals, connectors, heaters, etc. are adequately spaced away from all metal parts and panels
• All safety grounds (both internal and external) are correctly and securely connected
• All panels are properly and securely reassembled
• All gas connections are secure and have been leak tested
GENERAL INFORMATION
The information provided in this document is intended for trained, qualified personnel only. The proper function and the safety of the
appliance can be affected by an improper repair, and even serious threats to life or physical condition may arise. BSH Home Appliances
Corporation is not liable for damages caused by improper repairs performed by unauthorized parties. Local codes and standards apply
and must be observed. Contact the Technical Support Team for further assistance.
Safe Servicing Practices - All Appliances

1:2
PURGXFW OYHUYLHZDQG)HDWXUHV
Bosch 300 and 500 series freestanding gas ranges feature
sealed gas surface burners, continuous surface grates, self-
cleaning oven, electronic oven control, wide view oven window,
interior oven light, and a removeable storage drawer.
500 Series
HGS5053UC
500 series gas ranges feature an oval center surface burner while
300 series ranges have a round center surface burner. The oven
functions are controlled by the ES337 lectronic ven control module.
Current finish options available are hite, lackand lack with
tainless teel. All 300 and 500 series gas ranges operate on 120
volt 60 hz AC power supply.

1:3
The Bosch 300 series gas range uses an ES337 lectronic ven control
for all oven operations including Bake, Broil, Time Bake, Self-cleanand
Oven Lockout. The control module also features a countdown timer and
interior oven light control key.
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300 Series (models without convection bake)
The Bosch 500 series range range lectronic ven control has all of
the features listed for the 300 series range except for Oven Lockout. In
place ot the Lock keypad found on the 300 series rangesthe Convection
keypad is found on these models.
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Both lectronic ven control styles also feature silent control
panel option, temperature conversion between °C (Celsius) or °F
(Farenheit), and useradjustable temperature calibration. More
detail on how these as well as other features are accessed and
controlled can be found in the 8VHDQG&DUH0DQXDO provided with
each range.
Electronic Oven Control Module

1:4
Model Number Information
The information contained in this service manual applies to the following
models:
HGS3023UC
HGS3053UC
HGS3063UC
HGS5053UC

Data Plate /RFDWLRQ
   R 
   
  

 
Explanation of Model Number and Feature Designators
2009 Bosch Evolution Series Free Standing Range (FSR)Data Tag Formats
Initial Production July 2009
▪ Model number truncated (HGS3023U1=HGS3023UC/01)
▪ FD number not identified
(Convert using positions 3-5 of serial number; 906=FD 8906)
Implemented Early September 2009
▪ Model number truncated (HGS3023U1=HGS3023UC/01)
▪ FD number printing, but not identified with “FD”
Implemented mid-October 2009
▪ Model number in standard format
▪ FD number printing and identified
The format of the data tags used on the following FSRs has changed since the
beginning of production for the following models:
HGS3023UC


Product designator
H = Range
Fuel Type designator
E = Electric
G = Natural Gas
D = Dual Fuel
Model Type designator
S = Solo / Freestanding
Color Designator
2 = White
5 = Stainless Steel
6 = Black
Counter Designator
For visible model
changes
Series designator
30 = 300
50 = 500
80 = 800
H G S 5 0 5 3 U C 1 or 01
Market designator
U.S and Canada
Customer Service
Index No
(K I)
Explanation of FD NXPEHU
The FD number indicates production year and month. On some data
plates, it is incorporated in the serial number (i.e, 99906008803 . . . =
FD8906). On other data plates, the FD number is printed below and to
the right of the model number.  
Before calling for service assistance, be prepared to provide the
complete model number and FD number reflected on the data plate.
Examples are shown below.

1:5
Gas Cooktop Operation
Cooktop Configuration and Burner Specifications
300 Series gas ranges are equipped with five sealed-type surface
burners with electronic spark ignition. Surface burner sizes on the 300
series are 12,0009500 (2)5000 14,200 BTU. The illustration at
right shows the cooktop layout, burner configurationand BTU rating of
each surface burner location.
300 Series Cooktop
500 Series Cooktop
500 Series gas ranges are equipped with five sealed-type surface
burners with electronic spark ignition. Surface burner sizes on the 500
series are 12,0009500 (2)5000 16,000 BTU. The center burner of
the 500 series range is an elongated oval burner ideal for using griddles
or other oblong cookware. The illustration at right shows the cooktop
layout, burner configuration, and BTU rating of each surface burner
location.
12k
9.5k
9.5k
5k
14.2k
12k
9.5k
5k
16k
9.5k

1:6
Gas Cooktop Operation
Surface Burner Ignition Process
The ignition process of the surface burners on the 300 series and
500 series ranges is identical. Each surface burner is independntly
operated and controlled by a gas valve attached to a common manifold
pipe. The shaft of the valve extends through the front of the manifold
panel located just above the oven doorand a knob is installed on the
shaft.
OFF . . . LITE . . HI . . . . . . . . . . . LO
LITE Position Indicator


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  

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
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
To operate any surface burnerthe knob must first be pushed inward
before it can be rotated. When the knob is rotated counterclockwisethe
valve opens to allow gas to flow to the burner and activatethe electronic
spark modulewhich generates the spark to light the gas.
In order for the burner to light properlythe knob must be stopped at the
LITE position indicated on the knob by the lightning bolt graphic shown in
the illustration at right. If the knob is rotated beyond the LITE positionno
spark is generatedand the burner will not ignitehowevergas will continue
to flow to thesurface burner.

Whenever any surface burner control knob is rotated to the LITE
positionthe spark module will generate a spark at all surface burners
simultaneouslyeven if other burners have already been lighted.
Activation of the spark module is accomplished by means of a switch
that fits onto each surface burner control valve as seen in photo A below.
As the valve is rotatedthe switch cam is rotated.
The surface igniter switches are assembled in a continuous harness
and wired in a parallel circuitallowing any one of them to activate the
spark module. If one switch is defectivethey must all be replaced as an
assembly.
In the illustration abovethe eft Rear surface igniter switch is rotated
to the LITE positionclosing the contact in the switchand supplying L1
voltage to the spark module. The module fires all surface burner igniters
at the same time.
IGNITER SWITCHES
Photo A

1:7
Surface Burner Flame Characteristics
A properly operating burner will have clean blue flames with no yellow
tipping, excessive noiseor lifting away from the burner head. Photo B
atright illustrates a typical flame at high setting.
Yellow flames indicate improper fueltoair ratio and can be caused by
improper gas pressure, improper conversion for use with LP gasor
contaminated fuel supply. 6XUIDFH%XUQHU)ODPH$GMXVWPHQW
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Photo
B

1:8
Oven Operating Temperatures
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300 and 500 Series ranges have identical bake and broil burner ratings
as listed in the chart below. Note that the oven burnr BTU rating
decreased when the range is used on LP gas.


Gas
Burner
Ratings
(Natural/Liquid Propane)
Bake
Burner 18,000 BTU /16,000 BTU
Broil
Burner 13,500 BTU /13,500 BTU 

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The oven can be programmed to bake at any temperature from 170°F to
550°F (77°C to 287°C).
When broiling, the oven control has two selectable preset ranges, HI and
LO. When broiling on the HI setting, the maximum oven temperature is
550°F. When broiling on the LO setting, the maximum oven temperature
is 350°F.
In self-clean mode, the oven target temperature average is 825°F. The
actual oven temperatures will fluctuate between 810°F and 840°F during
the self-clean cycle to achieve this average temperature.
A
fter self-clean is completed, the oven door will remain locked until the
internal oven temperature is below 500°F.