Ravenheat HE 80/90 / HE 25-30s / HE 80-98s / HE 8-98s / HE 25-30s compact Fault Codes

CombiSystem Natural GasLPG 23-28 kW 2005-2012 Discontinued

Replaced by: CSI / CSX Primary range

All 20 fault codes

Code	Severity	Plain English	DIY
02E	High	Your boiler is struggling to move water around the system, which is causing it to shut down to prevent overheating.	Engineer
03E	High	The boiler's internal sensor that monitors water temperature or flow has failed, meaning the system cannot safely regulate heat.	Engineer
04E	Medium	Your boiler's hot water sensor has failed, which means the system cannot accurately heat water for your taps and showers.	Engineer
05E	High	Your boiler has detected a problem with the fan that clears exhaust gases, preventing it from starting safely for heating or hot water.	Engineer
06E	High	Your boiler is getting too hot inside, which has triggered a safety shutdown to prevent damage to the system.	Yes
08E	High	Your boiler has detected that there is not enough water in the system to operate safely.	Yes
09E	High	Your boiler has shut down because it has detected that the water inside is getting too hot, usually due to a circulation blockage or a pump failure.	Engineer
10E	Emergency	Your boiler has too much water in the system, which causes it to shut down for safety.	Yes
13E	High	Your boiler's computer system has encountered a processing glitch and has stopped working to protect itself.	Yes
21E	High	Your boiler has detected that the water returning from your radiators is too hot, which has caused it to shut down for safety.	Yes
22E	High	Your boiler has detected that the exhaust gases are becoming too hot and has shut down as a safety precaution.	Engineer
23E	High	Your boiler has detected a problem with the sensor that monitors exhaust gases, and it has shut down as a safety precaution.	Engineer
24E	High	Your boiler has detected a problem with the sensor that monitors the temperature of the water returning from your radiators, meaning it may not be able to heat your home effectively.	Engineer
25E	High	Your boiler has detected that the water inside the main heating unit has frozen, which is preventing the system from operating to avoid damage.	Yes
29E	High	Your hot water system is getting too hot and has shut down as a safety precaution.	Engineer
31E	High	Your boiler is having trouble 'talking' to your smart thermostat or external heater controls, meaning it may not receive instructions to turn on or off.	Yes
41E	High	Your boiler has detected that the water isn't moving through the system correctly, causing a large temperature gap between the pipes.	Yes
42E	High	Your boiler has shut down because there is a confusing difference between the temperatures recorded at its internal sensors, often caused by poor water flow or a sensors reading incorrectly.	Engineer
44E	High	Your boiler has detected an unusual temperature difference between the pipes, causing it to shut down to prevent overheating.	Yes
46E	High	Your boiler has detected a problem with the sensor that monitors internal water pressure, meaning it cannot confirm if there is enough water to operate safely.	Engineer

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