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Remeha — Calora Tower System
Select a fault code
Fault Codes
E01HIgnition lockout🔄 Try Reset
Boiler failed to ignite after multiple attempts.
E02HFlame loss🔄 Try Reset
Flame lit then extinguished.
E03HFan fault🔧 Engineer Required
Fan speed outside permitted range.
E05HOverheat lockout🔧 Engineer Required
High limit thermostat tripped due to overheating.
E07HFlue thermostat🔧 Engineer Required
Abnormal flue temperature.
E10HLow water pressure🔄 Try Reset
System pressure below minimum.
E16HFlow NTC fault🔧 Engineer Required
Flow temperature sensor fault.
E17HReturn NTC fault🔧 Engineer Required
Return temperature sensor fault.
E20HPump fault🔧 Engineer Required
Circulation pump fault.
E25HGas valve fault🔧 Engineer Required
Gas valve not operating correctly.
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