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Potterton — Assure Combi
Select a fault code
Fault Codes
E1Low water pressure🔄 Try Reset
System pressure too low.
E10Gas valve fault🔧 Engineer Required
Gas valve not operating correctly.
E11PCB fault🔧 Engineer Required
Internal PCB fault detected.
E2Flame loss🔄 Try Reset
Flame lit then extinguished.
E3Fan fault🔧 Engineer Required
Fan not operating at correct speed.
E4Ignition lockout🔄 Try Reset
Boiler failed to ignite.
E6Flow NTC fault🔧 Engineer Required
Flow temperature sensor fault.
E9Overheat lockout🔧 Engineer Required
High limit thermostat tripped.
📞 Potterton Direct Support
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Installation guides, user manuals, technical documentation
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