

Potterton Boiler Error Codes
Potterton Promax, Ultra, Gold/Titanium System & Combination Boiler
Error Code | System Behaviour |
---|---|
E09 | Gas valve wiring fault |
E10 | Outdoor sensor error |
E15 | Gas valve connection fault |
E20 | Central heating thermistor sensor fault |
E28 | Flue thermistor fault |
E40 | Central heating return thermistor fault |
E50 | Domestic hot water sensor fault |
E53 | Flue obstruction |
E55 | Calibration required |
E78 | Water pressure sensor fault |
E83 / 84 / 85 /86 / 87 | No communication between room controller and boiler |
E92 | Combustion test alarm during auto-setting |
E109 | Poor circulation |
E110 | Boiler overheat tripped |
E117 | System pressure too high (>2.9 bar) |
E118 | System pressure too low |
E125 | Primary water circulation fault |
E128 | Loss of flame during operation |
E129 | Loss of flame during calibration |
E130 | Flue thermostat sensor tripped (lockout) |
E133 | Ignition fault |
E135 | Internal error |
E154 | Primary flow fault |
E160 | Fan fault |
E270 | Dry fire |
E317 | Wrong power supply (HZ) |
E321 | Hot water thermistor fault |
E384 | Flame detected when gas valve off (false flame) |
E385 | Low voltage (less than 195v) |
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