Samsung FX710 Series Assembly instructions

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Gas Oven Repair Guide
[ FX710*, FX510*]
•Cooktop ignition
•Oven ignition
Ignition
Failure
•Oven
•Cooktop
Heating
defect
•Button, Motors
•Lamp
Abnormal
Flame
•Smell, Smoke, Noise
•No Display, Key Panel
Others
•Sensors
•Temperature control
Error
Code
Ver. Aug-2013

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#1. Symptom : Ignition Defect (Cooktop)
Check-1
Cause
Check-2
Tip
Code
Block
# 1
# 2
# 3
Cooktop
Ignition Defect
Electrode defect
Crack & clip fastening
Wire damage
Connection check
1-1
Electrode
Clip
Spark module
defect
Check for normal
voltage
Connection check
1-2
Spark
Module
Electrode
Switch
Ignition
Switch ignition
defect
Crack & wire damage
Connection check
1-3
Switch
Ignition
Spark
Module
Burner / Cap
defect
Burner, Cap mounting
inspection
Burner, Cap check for
debris
1-4
Burner
Cap
Orifice defect
Orifice Diameter
inspection
Orifice check for
debris
1-5
Nozzle
Gas leak /
Regulator defect
Gas main pipe
connection leak check
Gas line and manifold
crack & leak
GBR Shut-off operation
check
NG/LP condition
check
1-6
Regulator
Gas
Line
Chassis
Project
Basic Model
Type
Gas Oven
Vulcan
FX710
FX510
1-1. Repair Schematic
Next Page

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#2. Symptom : Ignition Defect (Oven)
Repair 계통도
Check-1
Cause
Check-2
Tip
Code
Block
# 1
# 2
# 3
Oven
Ignition Defect
HSI defect
HSI Crack inspection
HSI connection
inspection
2-1
HSI
Wire
Harness
Temp. Sens. defect
Sensor Inspection
Connection check
2-2
Temp.
Sensor
Wire
Harness
Assy PCB defect
PCB inspection
(Components/Pattern
damage, connection,
Relay inspection)
2-3
Assy PCB
Safety valve defect
Current measurement
check
2-4
Safety
Valve
Gas leak /
Regulator defect
Gas main pipe
connection area
leakage check
Gas line and manifold
crack & leak
GBR Shut-off operation
check
NG/LP condition
check
1-6
Regulator
Gas
Line
Chassis
Project
Basic Model
Type
Gas Oven
Vulcan
FX710
FX510
2-1. Repair Schematic

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#3. Symptom : Heating Defect (Oven)
Check-1
Cause
Check-2
Tip
Code
Block
# 1
# 2
# 3
Oven
Heating
Defect
Temp. Selection
defect
Temp. Selection
inspection
3-1
Program
Temp. Sens. defect
Sensor inspection
Connection check
2-2
Temp.
Sensor
Wire
Harness
Assy PCB defect
PCB inspection
(Components/Pattern
damage, connection,
Relay inspection)
2-3
Assy PCB
Orifice defect
Orifice Diameter
inspection
Orifice check for
debris
1-5
Nozzle
Gas leak /
Regulator defect
Gas main pipe
connection area
leakage check
Gas line and manifold
crack & leak
GBR Shut-off operation
check
LNG/LPG condition
check
1-6
Regulator
Gas
Line
Door Open/Close
defect
Door assembly
condition check
Gasket check
3-2
Door
Gasket
Chassis
Project
Basic Model
Type
Gas Oven
Vulcan
FX710
FX510
3-1. Repair Schematic
Next Page

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#4. Symptom : Heating Defect (Cooktop)
Check-1
Cause
Check-2
Tip
Code
Block
# 1
# 2
# 3
Cooktop
Heating
Defect
Orifice defect
Orifice Diameter
inspection
Orifice check for
debris
1-5
Nozzle
Gas leak /
Regulator defect
Gas main pipe
connection area
leakage check
Gas line and manifold
crack & leak
GBR Shut-off operation
check
NG/LP condition
check
1-6
Regulator
Gas Line
Chassis
Project
Basic Model
Type
Gas Oven
Vulcan
FX710
FX510
4-1. Repair Schematic

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#5. Symptom : Flame Defect (Cooktop)
Check-1
Cause
Check-2
Tip
Code
Block
# 1
# 2
# 3
Cooktop
Flame Defect
1. Yellow tip
2. Lifting
3. Flame-Out
Burner/Cap defect
Burner, Cap mounting
inspection
Burner, Cap check for
debris
1-4
Burner
Cap
Orifice defect
Orifice Diameter check
Check Orifice for
debris
1-5
Nozzle
Gas leak /
Regulator defect
Gas main pipe
connection area
leakage check
Gas line and manifold
crack & leak
GBR Shut-off operation
check
NG/LPGcondition
check
1-6
Regulator
Gas Line
Flame-out defect
Valve inspection
5-1
Valve
Chassis
Project
Basic Model
Type
Gas Oven
Vulcan
FX710
FX510
5-1. Repair Schematic

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#6. Symptom : Other Defects
Check-1
Cause
Check-2
Tip
Code
Block
# 1
# 2
# 3
Smell, Smoke
Defect
Gas Leak
Gas main pipe
connection area
leakage check
Gas line and manifold
crack & leak
1-6
Gas Line
Burner/Cap defect
Burner, Cap mounting
inspection
Burner, Cap check for
debris
1-4
Burner
Cap
Air shutter defect
Air shutter opening
area inspection
6-1
Oven
Burner
Air
Shutter
Open/Close
Defect
Assy Door /
Drawer Part and
Open/Close check
Hinge inspection
Open/Close
interference check
Drawer assembly
condition check
Drawer part check
6-2
Hinge
Assy
Door
Noise
Defect
Cooktop noise
defect
Burner, Cap mounting
inspection
Check if Spark noise,
or Gas noise
Orifice spec check
6-3
NDF
Nozzle
Burner
Convection Fan
noise defect
Fan cover casing check
Fan operation check
6-4
Fan Motor
Cover
Casing
Chassis
Project
Basic Model
Type
Gas Oven
Vulcan
FX710
FX510
6-1. Repair Schematic
Next Page

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#6. Symptom : Other Defects
Check-1
Cause
Check-2
Tip
Code
Block
# 1
# 2
# 3
No Power
Breaker / Power
cord defect
Wire harness coating
condition check
Breaker Spec defect
6-5
Power
cord
Wire connection
issue
Wire connection
inspection (P/cord,
PCB connector, Main
relay terminal)
6-6
PCB defect
PCB inspection
(Components/Pattern
damage, connection,
Relay inspection)
2-3
PCB
Button
Operation
Defect
Membrane panel
Key issue
Panel key operation
and ribbon cable
connection defect
6-7
Membrane
Membrane
Switch
Deformation
Defect
Membrane Switch
Deformation defect
Customer usage : Too
large of a pot or using
pot too close to Key
panel
6-8
Membrane
Chassis
Project
Basic Model
Type
Gas Oven
Vulcan
FX710
FX510
6-2. Repair Schematic

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#7. Symptom : Error Code
Check-1
Cause
Check-2
Tip
Code
Block
# 1
# 2
# 3
SE
Key panel
(Membrane switch)
Key panel surface
damage
Ribbon cable insert
condition check (Tilted)
Tail pattern corrosion
and short
7-1
Key
Panel
Main
PBA
E-27
Temperature
Sensor
Open
Sensor wire
disconnect
Sensor resistance
value check
7-2
Wire
Harness
Sensor
E-28
Temperature
Sensor
Short
Sensor resistance
value check
Main PBA short and
other abnormality
7-2
Sensor
Main PBA
E-08
Preheat Fail
(not reach preheat
target temperature)
Gas supply defect
HSI ignition defect
Safety valve defect
7-3
HSI
Safety
Valve
Main
PBA
E-0A
Over Temperature
Excessive gas supply
Temp. Sensor defect
PCB defect
7-4
Main
PBA
Temp.
Sensor
E-0E
Door Locking
defect
Connection
Door switch defect
Door lock motor
Latch assembly
condition
7-5
Door
Switch
Door
Lock
Motor
Door
Latch
Chassis
Project
Basic Model
Type
Gas Oven
Vulcan
FX710
FX510
7-1. Repair Schematic

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Step 1
①Check if power comes on.
②Check if any Sparks are coming from the Electrode.
Step 2
①If there are no Sparks, Check the Electrode & Spark module wiring.
②Check the Electrode wire for signs of melting or other damage.
③Check the Electrode fastening clip and Electrode fixed state.
④Make sure there are no movements of the Electrode
(In the case of Wire melting, sparks will come out of the melted area and
it will fail to ignite)
Check Point “Electrode wire and fastening Clip conditions” inspection.
Tip 1-1. Electrode Inspection

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Step 1
①Check if power comes on.
②Check if any Sparks are coming from the Electrode.
Step 2
①If there are no Sparks, Check the Electrode & Spark module wiring.
②Switch ignition & Spark module connection state check.
③Check the Spark module input voltage. (120V)
(Take measurements while Knob is at LITE position)
Check Point “Spark module state and Wire connection state” inspection.
Tip 1-2. Spark Module Inspection

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Step 1
①Check if power comes on.
②Check if any Sparks are coming from the Electrode.
Step 2
①If there are no Sparks, Check the Switch Ignition & Spark module wiring.
②Check the switch ignition & each valve’s assembly state.
③Check if Switch ignition has any damage in the mold.
④Check for any damage on Switch ignition wire.
Check Point “Switch ignition state and Wire connection state” inspection.
Tip 1-2. Spark module
Tip 1-3. Switch Ignition Inspection

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Step 1
①Check if any Sparks are coming from the Electrode.
②Check if the gas supply valve is opened completely.
Step 2
①Check the Burner, Cap for any foreign debris.
(Food particles or Aluminum tip)
②Check the Assy Cooktop to see if screws are assembled completely.
③Check that the Burner and Cap are mounted properly.
④Check if Sparks are sparking towards the Burner cap.
(If the gap between Electrode and Cap is larger than 3.5~4mm,
Spark will go towards the burner instead of the cap and will not ignite)
※ If the Burner / Cap mounting is unstable, it might still ignite but the
flame will be unstable and the incomplete combustion has a high chance
of producing smoke.
Check Point “Burner, Cap debris and mounting state” inspection.
3.5~4mm
Tip 1-4. Burner, Cap Inspection
Return to Other
Return to
Abnormal

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Step 1
①Check if Cooktop / Oven is operating properly.
②Check if the gas supply valve is opened completely.
Step 2
① Check that the gas pressure is not above 7”WC.
②Check if GBR is appropriately selected with NG / LP mode.
③Check for any debris on the Orifice.
④Check the Orifice Diameter
(Oven has same diameter)
(Cooktop has different Diameter per product)
⑤Use the appropriate valves according to specs, then check for proper
operation.
※ Refer to next page for Gas Oven Cooktop orifice spec per product
Check Point “Orifice debris and Orifice Diameter” inspection.
Tip 1-5. Nozzle Inspection
Next Page
Return to
Abnormal
Return to
Oven Heating

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※ Cooktop Orifice Diameter Spec Sheet per Product
Check Point “Orifice debris and Orifice Diameter” inspection.
1.92
1.01
1.01
NG LP
Tip 1-5. Nozzle Inspection

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Step 1
①Check if any Sparks are coming from the Electrode.
②Check if the gas supply valve is opened completely.
Step 2
① Check if GBR’s Shut-off lever is in open state.
②Check if supplied gas pressure is 7”(NG), 11”(LP).
③Check for proper NG / LP setting.
③Check for Regulator damage.
(Check if gas is being supplied through Regulator, Lubber clogged)
④With Main gas line connected, check for any gas leakage at each Gas line,
Manifold.
-> Main Leak point
(Install Error: Most likely
leakage cause)
Check Point “Regulator damage, Shut-off lever, Gas leak” inspection.
Tip 1-6. Regulator, Gas Leak Inspection
Return to Other
Return to
Abnormal

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Step 1
①Check if power comes on.
②Check if the gas supply valve is opened completely.
③Check if HSI ignites properly when Oven starts.
Step 2
① Check to see if Bake, Broil burner’s HSI is properly connected.
②Check the HSI resistance value (normal : 40~400Ω)
Check Point “HSI damage and ignition state” inspection.
Tip 2-1. HSI Inspection

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Step 1
①Check if power comes on.
②Check if the gas supply valve is opened completely.
③Check the Temp. Sensor connection.
Step 2
①Check the Temp. Sensor resistance value (normal : ~1080Ωat room temp.)
(Short : ~0Ω, Open : ~∞Ω)
②Check the PCB Wire connection (if not connected, E27 error will occur.
Must be connected)
Check Point “Temp. Sensor connection and resistance value” inspection.
Tip 2-2. Temperature Sensor Inspection
Return to
Oven Heating

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Step 1
① Check the PCB terminal’s input voltage.
②Check connection on each PCB terminal.
Step 2
①Check the PCB input voltage (normal : 120V).
②Check for any change in Relay resistance at unit start.
(With power connected, at unit start, normal: ~120VAC, : ~12VDC)
Bake : T602-T605, Broil : T602-T604
③Check for any Relay operating noise at Oven start.
④Disassemble the PCB and check for any component or pattern damage.
If any problems are found, replace the PCB and check for proper
operation.
Check Point “Temp. Sensor connection and resistance value” inspection.
Tip 2-3. Assy PCB Inspection
Return to Other
Return to
Oven Heating

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Step 1
①Check the Safety valve connection.
②Check if HSI ignites properly when Oven starts.
Step 2
①Check the Safety valve terminal current value at Oven start.
(normal : 3.3~3.6A)
②If problems are found, replace the Safety valve and check for proper
operation.
(Measurement method when Broil operates)
③Replace the Safety valve and check for proper operation.
Check Point “Safety valve connection and resistance value” inspection.
Tip 2-4. Safety Valve Inspection