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Ravenheat Fault Codes
Select a fault code to see its meaning, common causes and how to fix it.
- 01 Fault code 01 on a Ravenheat boiler indicates that the boiler attempted to light the main burner but could not… Read more →
- E02 The E02 code on a Ravenheat boiler signals a pump circulation fault. The boiler's controls have detected that water is… Read more →
- E03 The E03 code on a Ravenheat boiler indicates that the PCB has detected a problem with the flow sensor — the small NTC… Read more →
- E04 The E04 code on a Ravenheat boiler indicates that the PCB has detected a problem with the domestic hot water (DHW) NTC… Read more →
- E05 The E05 fault code on Ravenheat boilers signals a problem with the boiler's flue fan. The fan is responsible for… Read more →
- E06 The E06 code on a Ravenheat boiler indicates that the central heating flow temperature sensor has detected an… Read more →
- E08 The E08 fault code (also displayed as 08E on some Ravenheat models) indicates that the boiler has detected water… Read more →
- E09 The E09 fault code on Ravenheat boilers indicates that the overheat thermostat (also referred to as the high-limit… Read more →
- E10 The Ravenheat E10 fault code signals a water pressure problem — but the exact direction of that fault (too high or too… Read more →
- E13 The E13 code on a Ravenheat boiler signals a software or firmware fault within the boiler's printed circuit board… Read more →
- E21 The E21 fault code on a Ravenheat boiler indicates that the central heating return sensor has detected an overheating… Read more →
- E22 The E22 code (sometimes displayed alongside E23 on certain Ravenheat models) indicates that the boiler's control board… Read more →
- E23 The E23 code on a Ravenheat boiler signals a problem with the flue sensor — the component responsible for monitoring… Read more →
- E24 The E24 code on a Ravenheat boiler indicates a fault with the heating return NTC thermistor — the small… Read more →
- E25 The E25 code on a Ravenheat boiler indicates that the main heat exchanger has frozen. The heat exchanger is the… Read more →
- E29 The E29 code on a Ravenheat boiler signals that the domestic hot water or central heating circuit has reached a… Read more →
- E31 The E31 code on a Ravenheat boiler signals that the OpenTherm communication link between the boiler and its connected… Read more →
- E41 The E41 code on a Ravenheat boiler means the boiler's control board has detected an unexpectedly large difference… Read more →
- E43 The E43 code on a Ravenheat boiler sits within the E42–E44 fault group, which collectively point to a 'different… Read more →
- E46 The E46 code on a Ravenheat boiler signals that the PCB is receiving an incorrect, absent, or out-of-range signal from… Read more →
- F73 The F73 code appears on Ravenheat boilers when the control board detects a problem with the heating circuit pressure… Read more →
- F74 The F74 code on a Ravenheat boiler signals a problem with the heating circuit pressure sensor. The boiler's PCB has… Read more →
- F76 The F76 fault code on a Ravenheat boiler signals that the thermal fuse — a safety device mounted above the heat… Read more →
- F77 The F77 code indicates a malfunction in the gas valve motor assembly. In practice, the solenoid-operated valve has… Read more →
- F83 The F83 code on Ravenheat boilers signals that the appliance has detected either insufficient water in the system or a… Read more →
- F84 The F84 code appears when the Ravenheat boiler detects a persistent, abnormal difference between the temperatures… Read more →
- F85 The F85 fault code on a Ravenheat boiler indicates that one or both of the heating circuit's temperature sensors — the… Read more →
- F86 The F86 code on a Ravenheat boiler signals that the PCB has detected a problem with the electrical contact or signal… Read more →