Halstead
Eden SBX 18
System Boiler
18kW
2003-2010
ErP B
15 fault codes
<p>The Eden SBX 18 is a system boiler from Halstead, available at 18kW output. Produced 2003-2010.</p>
Eden SBX 18 Fault Codes 15
Code
Description
Severity
Type
1
Ignition Lockout
The boiler has failed to ignite and locked out. On older Halstead models this is indicated…
High
Engineer
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10
Diverter Valve Fault
The diverter valve is stuck or not switching correctly between heating and hot water. This was…
Medium
Engineer
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11
Differential Check Failure
The temperature difference between flow and return is outside expected limits. Indicates a circulation problem.
Medium
Engineer
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12
Low Water Pressure
System water pressure has dropped below the minimum safe level.
Low
DIY
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2
Overheat Lockout
The safety thermostat has activated due to overheating. The boiler has shut down to prevent damage.
High
Engineer
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3
Fan / Air Pressure Switch Fault
The fan is not running correctly or the air pressure switch is not confirming airflow.
High
Engineer
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4
Flame Loss During Operation
The boiler had a stable flame but lost it during operation. May indicate gas supply interruption…
High
Engineer
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5
Return Thermistor Fault
The return water temperature sensor is reading outside its normal range.
Medium
Engineer
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6
Flow Thermistor Fault
The flow water temperature sensor is faulty or reading incorrectly.
Medium
Engineer
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7
DHW Thermistor Fault
The domestic hot water temperature sensor has developed a fault.
Medium
Engineer
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8
PCB / Electronics Fault
The printed circuit board has an internal error. On Halstead Ace High models, PCB failure was…
High
Engineer
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9
Gas Valve Fault
The gas valve is not responding to commands. The solenoid may be faulty.
High
Engineer
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