FAULT CODES

Fault Codes
E20 Central Heating NTC Fault
E28 Incorrect PCB fitted
E50 Return NTC Fault
E110 Safety Thermostat Operated
E119 Water Pressure Switch Not Operated
E125 Circulation Fault (Primary Circuit)
E131 Power been turned off during E125
E133 Interruption Of Gas Supply or Flame Failure
E151 PCB Error Fault
E152 Parameter Setting Error
E155 Remote Reset Off
E156 Low Voltage to Appliance

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The codes are either 2 or 3 digits, preceded by the letter 'E' For Example, code E133 will be displayed by 'E1' alternating with '33'. E50 is shown as 'E' then '50'.

E160 Fan or Fan Wiring Fault
E161 Maximum Fan Speed Exceeded
E164 Flow/Pressure Switch Error
E167 Heating Power Limit Exceeded
E168 Boiler/Component Failure
E193 Pre-Circulation Fault
SF or P Calibration Function Active