Ravenheat
HE 120T
Combi Boiler
30kW
2010-2015
ErP A
31 fault codes
<p>The HE 120T is a combi boiler from Ravenheat, available at 30kW output. Produced 2010-2015.</p>
HE 120T Fault Codes 31
Code
Description
Severity
Type
01
Ignition Failure (CSI)
On Ravenheat CSI boilers, code 01 indicates the boiler has failed to ignite — check gas…
Medium
DIY
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04
Overheat Thermostat Fault (CSI)
On Ravenheat CSI boilers, code 04 indicates the overheat thermostat needs checking.
High
Engineer
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28
Low Water Pressure / Pump Fault (CSI)
On Ravenheat CSI 120 boilers, code 28 indicates a failed low water pressure switch or pump…
Low
DIY
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E02
Pump Circulation Problem
On Ravenheat CS/WH/HE models, E02 indicates a problem with the pump circulation — the pump may…
Medium
Engineer
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E03
Flow Sensor Damaged
The flow temperature sensor has failed or has a wiring fault.
Medium
Engineer
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E04
DHW Sensor Damaged
On CS/WH/HE models, E04 indicates the domestic hot water sensor has failed.
Medium
Engineer
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E05
Fan Fault — No Signal
The fan is not running or there is no fan speed signal. The fan may be…
High
Engineer
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E06
CH Sensor Overheating
The central heating temperature sensor is detecting an overtemperature condition.
High
Engineer
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E08
Low Water Pressure
System water pressure is below the safe minimum on Ravenheat CS/WH/HE boilers.
Low
DIY
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E09
Overheat Sensor Overheating
The overheat thermostat sensor has detected a dangerous temperature.
High
Engineer
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E10
High Water Pressure
The system water pressure is too high on Ravenheat boilers.
Medium
Engineer
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E22
Flue Sensor Overheating
The flue gas sensor has detected an overtemperature condition in the flue.
High
Engineer
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E23
Flue Sensor Damaged
The flue temperature sensor has failed or has a wiring fault.
Medium
Engineer
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E25
Heat Exchanger Frozen
The main heat exchanger has frozen. This typically occurs when the boiler is in an unheated…
High
DIY
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E46
Water Pressure Sensor Error
The water pressure sensor circuit is either open or short-circuited.
Medium
Engineer
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