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Sime

Dewy 30 HE

Regular 9kW 2004-2012 ErP B 30 fault codes

<p>The Dewy 30 HE is a combi boiler from Sime, available at 9kW output. Produced 2004-2012.</p>

Dewy 30 HE Fault Codes 30

Code Description Severity Type
AL 01 Smoke Thermostat (Alarm 01) The flue gas temperature has exceeded the safe limit. High Engineer View Guide
AL 02 Low Water Pressure (Alarm 02) System pressure is below the minimum. The boiler has locked out. Low DIY View Guide
AL 04 DHW Sensor Fault (Alarm 04) The domestic hot water NTC sensor has developed a fault. Medium Engineer View Guide
AL 05 Flow Sensor Fault (Alarm 05) The central heating flow NTC sensor is faulty. Medium Engineer View Guide
AL 06 No Flame Detection (Alarm 06) No flame detected during ignition. High Engineer View Guide
AL 07 Safety Thermostat (Alarm 07) The safety thermostat has activated. High Engineer View Guide
AL 09 Fan Fault (Alarm 09) Fan not running correctly. High Engineer View Guide
AL 10 Return Sensor Fault (Alarm 10) Return NTC sensor faulty. Medium Engineer View Guide
AL 24 Flow Sensor Short (Alarm 24) The flow NTC has a short circuit. Medium Engineer View Guide
AL 25 DHW Sensor Short (Alarm 25) The DHW NTC has a short circuit. Medium Engineer View Guide
AL 27 Compatibility Error (Alarm 27) The PCB configuration does not match the boiler hardware. High Engineer View Guide
AL 29 PCB Fault (Alarm 29) Internal PCB error. High Engineer View Guide
AL 31 Communication Fault (Alarm 31) Internal communication error between boiler components. High Engineer View Guide
AL 32 Combustion Fault (Alarm 32) Combustion quality is outside the permitted range. High Engineer View Guide
E01 Ignition Failure The boiler has failed to ignite. This is the most common Sime fault code. High Engineer View Guide
E02 Overheat Protection The safety thermostat has activated due to overheating. High Engineer View Guide
E03 Fan Fault The fan is not running at the expected speed. High Engineer View Guide
E04 DHW Sensor Fault The domestic hot water NTC sensor has a fault. Medium Engineer View Guide
E05 Flow Sensor Fault The central heating flow NTC sensor is faulty or has an open circuit. Medium Engineer View Guide
E06 No Flame Detection The ionisation electrode cannot detect a flame during the ignition sequence. High Engineer View Guide
E07 Safety Thermostat Intervention The safety thermostat has cut out — similar to E02 but a different trigger circuit. High Engineer View Guide
E08 Air Pressure Switch Fault The air pressure switch is not confirming correct airflow. High Engineer View Guide
E09 Gas Valve Fault The gas valve is not opening or closing correctly. High Engineer View Guide
E10 Return Sensor Fault The return water NTC sensor is faulty. Medium Engineer View Guide
E11 PCB Fault The printed circuit board has an internal error. High Engineer View Guide
E12 Pump Fault The circulation pump is not running or is blocked. High Engineer View Guide
E13 Low Water Pressure System pressure has dropped below the safe operating level. Low DIY View Guide
E14 Condensate Blocked The condensate drain pipe is blocked or frozen. Medium DIY View Guide
E15 Diverter Valve Fault The diverter valve is stuck or not switching correctly. Medium Engineer View Guide
E16 Flame Lost During Operation The flame was established but lost during running. High Engineer View Guide

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