Remeha Fault Codes

Select a fault code to see its meaning, common causes and how to fix it.

A.01.21 The A.01.21 code is a warning generated by the boiler's control system when it detects that the domestic hot water… Read more →
A.02.06 The A.02.06 code is Remeha's water pressure warning, meaning the system pressure has dropped below the minimum… Read more →
A.02.18 The A.02.18 is a warning-level code on Remeha Ace-series boilers. The display shows an Object Dictionary (OBD) Error,… Read more →
A.02.37 The A.02.37 warning code appears when Remeha's eSMART control system detects that a non-safety-critical accessory on… Read more →
A.03.17 The A.03.17 code appears on Remeha boilers that use the structured alphanumeric fault code system — most notably the… Read more →
E.00.00 E.00.00 is a lockout fault on modern Remeha boilers, most commonly seen on the Quinta Ace, Quinta Pro, Calenta, and… Read more →
E.00.01 The E.00.01 fault code (also displayed as E[01 on some Remeha models) indicates that the boiler's Power Supply Unit… Read more →
E.00.04 The E.00.04 fault code on a Remeha boiler indicates a problem with the return water temperature sensor — sometimes… Read more →
E.00.05 The E.00.05 code indicates that your Remeha boiler has detected a short circuit in the return temperature sensor — the… Read more →
E.00.08 The E.00.08 code belongs to Remeha's E.00.xx sensor fault group, used on the Quinta Ace and similar Quinta-series… Read more →
E.00.09 The E.00.09 code appears on newer Remeha commercial and semi-commercial models such as the Quinta Ace and Gas 310/610… Read more →
E.00.16 The E.00.16 fault code indicates that the boiler's domestic hot water (DHW) cylinder temperature sensor is either… Read more →
E.00.17 The E.00.17 fault code appears on Remeha boilers — most commonly the Quinta Ace commercial and semi-commercial range —… Read more →
E.00.20 The E.00.20 fault code indicates that the boiler's flue gas temperature sensor (an NTC thermistor mounted on the flue… Read more →
E.00.21 The E.00.21 code means your Remeha boiler has detected a problem with the flue gas temperature sensor — either the… Read more →
E.00.40 The E.00.40 fault code on a Remeha boiler indicates that the hydraulic pressure sensor is reporting a reading that… Read more →
E.00.41 The E.00.41 code appears on Remeha Quinta-series boilers (including the Quinta Ace and Quinta Pro) when the control… Read more →
E.01.04 The E.01.04 code on a Remeha boiler means the appliance has detected multiple unintended flame losses within a 24-hour… Read more →
E.01.11 The E.01.11 code on Remeha boilers corresponds to fault E11 in the boiler's diagnostic system. It indicates that the… Read more →
E.01.12 The E.01.12 code appears on Remeha boilers when the control board detects that the water returning from the heating… Read more →
E.02.04 The E.02.04 code appears on newer Remeha models — most notably the Tzerra Ace and Quinta Ace — and points to a problem… Read more →
E.02.13 The E.02.13 code appears on Remeha boilers — most notably the Tzerra Ace and Quinta Ace — and indicates that the… Read more →
E.02.17 The E.02.17 code (also shown as E02.17) means the boiler's main control board has lost communication with its internal… Read more →
E.02.35 E.02.35 is a permanent lockout code (the 'E' prefix always indicates a lockout, as opposed to 'H' which signals a… Read more →
E.02.47 E.02.47 is a hard lock-out code on Remeha boilers, meaning the boiler has shut itself down completely and will not… Read more →
E.02.48 The E.02.48 code is a full lockout on Remeha Ace-series boilers (Tzerra Ace, Avanta Ace, Quinta Ace and similar). To… Read more →
E.02.51 E.02.51 is a permanent lockout code (E-type) found on modern Remeha Ace-series boilers — including the Tzerra Ace,… Read more →
E.02.52 The E.02.52 fault code on Remeha boilers indicates a GVC (Gas Valve Controller) Burner Profile Error. The GVC is a… Read more →
E.04.00 The E.04.00 code belongs to Remeha's E.04 fault family, which covers ignition and flame-establishment failures. When… Read more →
E.04.01 The E.04.01 code — shown as E04 on older Remeha Avanta displays — means the boiler has entered an ignition lockout. It… Read more →
E.04.02 The E.04.02 code is part of Remeha's E04 ignition fault family, and the .02 sub-code tells you something specific: the… Read more →
E.04.03 The E.04.03 code is a hard lockout triggered when the boiler's flow temperature — the temperature of the water leaving… Read more →
E.04.04 The E.04.04 code (and the closely related E4/E04 codes) appears across several Remeha boiler ranges, and its precise… Read more →
E.04.05 The E.04.05 code belongs to Remeha's E4 fault family, which covers ignition and flame establishment failures. In plain… Read more →
E.04.06 The Remeha E.04.06 fault code belongs to the E4 ignition/flame failure family. The '04' group covers all faults related… Read more →
E.04.07 The E.04.07 code is a permanent lockout fault (the 'E' prefix denotes a fault serious enough to stop the boiler… Read more →
E.04.08 The E.04.08 code belongs to Remeha's E.04 ignition and flame-failure fault family. When your boiler displays this code,… Read more →
E.04.09 The Remeha E.04.09 fault code belongs to the E4 fault family, which covers ignition and flame-establishment failures.… Read more →
E.04.10 The E.04.10 code appears on your Remeha boiler when it has made five consecutive attempts to light the burner and… Read more →
E.04.11 The E.04 root code on Remeha boilers signals an ignition lockout — the boiler has made repeated attempts to light… Read more →
E.04.12 The E.04.12 code on a Remeha boiler indicates that the ionisation circuit has registered what appears to be a flame… Read more →
E.04.13 The E.04.13 code appears on Remeha boilers when the control system detects that the fan is not behaving as expected.… Read more →
E.04.14 The E.04.14 code — also displayed as E14 or E014 on some Remeha models — means the boiler has entered a safety lockout… Read more →
E.04.15 The E.04.15 code appears on Remeha Quinta Ace commercial and semi-commercial condensing boilers. It tells you that the… Read more →
E.04.17 The E.04.17 fault code on a Remeha boiler indicates that the internal electronic driver responsible for controlling the… Read more →
E.04.18 The Remeha E.04.18 fault is part of the E04 (also shown as E4) ignition lockout family, with the .18 sub-code providing… Read more →
E.04.19 The E.04.19 code belongs to Remeha's E.04.xx ignition fault family, where the '04' block always points to a failure in… Read more →
E.04.20 The E.04.20 code belongs to Remeha's E.04.xx ignition fault family and indicates that the boiler has exhausted all of… Read more →
E0 The E0 fault code on Remeha boilers signals that the boiler's control board has detected a problem with one or more of… Read more →
E1 The E1 code appears when your Remeha boiler detects that the water temperature leaving the heat exchanger (the flow… Read more →
E10 The E10 code appears on Remeha boilers when the appliance detects that water is not moving through the system during… Read more →
E11 The E11 code appears when the boiler's airbox temperature sensor registers readings above the safe operating threshold.… Read more →
E13 The E13 code appears on Remeha boilers — most commonly the Avanta and Avanta Plus range — when the heat exchanger's… Read more →
E2 The E2 code appears on Remeha boilers — most commonly the Avanta range — when the boiler detects that the return water… Read more →
E3 The E3 code appears on Remeha boilers (including the Avanta range) when the boiler detects a problem with the control… Read more →
E4 The E4 fault code on Remeha boilers indicates that the boiler has failed to establish a flame after repeated start… Read more →
E43 The E43 fault code on a Remeha boiler signals that one or more internal automation parameters have moved outside the… Read more →
E44 The E44 code tells you that the boiler's control system has run an internal check on its configuration settings and… Read more →
E45 The E45 code appears on Remeha boilers when the internal control unit (PCB) has lost its programmed settings and fallen… Read more →
E5 The E5 fault code on Remeha boilers — most commonly seen on the Avanta and Avanta Plus — indicates that the boiler has… Read more →
E6 The E6 fault code on a Remeha boiler is a safety lockout triggered when the boiler's control system detects a flame… Read more →
E7 The E7 fault code on Remeha boilers is a multi-purpose alert that can signal one of several underlying problems… Read more →
E8 The E8 code on a Remeha boiler signals a fan fault. This means the boiler's fan has either failed to start when it… Read more →
E9 The E9 fault code on Remeha boilers signals that the appliance has detected a problem with water circulation or system… Read more →
H.00.16 H.00.16 is a temporary blocking fault on Remeha e-Smart boilers (Tzerra Ace, Quinta Ace, Gas 320/620 Ace and similar… Read more →
H.00.17 On Remeha boilers running the e-Smart control platform, fault codes are structured in three parts. The letter 'H' means… Read more →
H.00.36 Fault code H.00.36 is a blocking code (H-series) on Remeha boilers, most notably the Gas 220 Ace floor-standing range.… Read more →
H.00.37 H.00.37 is a blocking fault (H-type) on Remeha boilers, meaning the boiler shuts down automatically but is designed to… Read more →
H.01.00 The H.01.00 code on a Remeha boiler is a blocking fault labelled 'Comm Error', indicating that the boiler's internal… Read more →
H.01.05 The H.01.05 code appears on Remeha boilers — including the Tzerra Ace and Quinta Ace series that use the dot-notation… Read more →
H.01.06 The H.01.06 code is a blocking fault on Remeha boilers, meaning the boiler temporarily suspends operation as a… Read more →
H.01.07 H.01.07 is a fault code appearing on Remeha boilers — most likely within the Quinta ACE or similar commercial range —… Read more →
H.01.08 The H.01.08 code appears on Remeha boilers — most notably the Quinta Ace range — when the central heating flow… Read more →
H.01.09 The H.01.09 code is a blocking fault — a temporary safety shutdown — triggered by the boiler's internal gas pressure… Read more →
H.01.13 The H.01.13 fault code (displayed as E13 on Remeha Avanta Plus and similar domestic models) means the thermal fuse… Read more →
H.01.14 The H.01.14 code appears on Remeha boilers when the flow (supply) temperature — the temperature of water leaving the… Read more →
H.01.15 The H.01.15 code appears on Remeha Ace-series boilers (including the Quinta Ace and Tzerra Ace ranges) and translates… Read more →
H.02.03 H.02.03 is a temporary blocking fault (the 'H' prefix indicates the boiler has paused rather than permanently locked… Read more →
H.02.04 When your Remeha boiler displays H.02.04, it means the main printed circuit board (PCB) — the boiler's central control… Read more →
H.02.05 The H prefix in Remeha's fault-code system identifies a blocking fault — the boiler shuts down and will not operate… Read more →
H.02.09 The H prefix on Remeha boilers signals a blocking fault — a restricted operating state rather than a full hard lockout.… Read more →
H.02.10 The H.02.10 code indicates what Remeha calls a 'Full Block' condition — the boiler's control system has detected a… Read more →
H.02.12 H.02.12 is a blocking code on Remeha boilers (including the Quinta Ace and Tzerra range). The 'H' prefix means the… Read more →
H.02.36 H.02.36 is a Blocking (H-type) code on Remeha boilers using the e-Smart control system. Blocking codes temporarily… Read more →
H.03.00 The H.03.00 code indicates a Safety Parameter Error on your Remeha boiler. Specifically, the control system has… Read more →
H.03.01 H.03.01 is a blocking fault on Remeha ACE-series boilers, meaning the boiler has temporarily suspended operation rather… Read more →
H.03.02 The H.03.02 code on Remeha boilers indicates a blocking fault caused by a flame signal that is too weak or completely… Read more →
H.03.05 H.03.05 is a temporary stop code on Remeha boilers. The 'H' prefix tells you the boiler has halted itself but has not… Read more →