C
Chaffoteaux Fault Codes
Select a fault code to see its meaning, common causes and how to fix it.
- 101 Fault code 101 on a Chaffoteaux boiler signals that the water temperature inside the primary circuit has climbed to an… Read more →
- 102 Fault code 102 on Chaffoteaux boilers indicates a pressure sensor error. In plain terms, the boiler's internal pressure… Read more →
- 103 Fault code 103 on a Chaffoteaux boiler indicates that the appliance has detected a problem with water circulation in… Read more →
- 104 Fault code 104 on Chaffoteaux boilers signals that the boiler's control system has detected inadequate water… Read more →
- 105 Fault code 105 on Chaffoteaux boilers indicates one of two closely related problems depending on your specific model… Read more →
- 106 Fault code 106 on Chaffoteaux boilers signals that the boiler has been unable to confirm adequate water flow through… Read more →
- 107 Fault code 107 on Chaffoteaux boilers points to a problem with water temperature sensing on the central heating flow… Read more →
- 108 Fault code 108 on a Chaffoteaux boiler indicates that the water pressure in the central heating circuit has dropped… Read more →
- 109 Fault code 109 on a Chaffoteaux boiler indicates that the system pressure has climbed above the safe threshold —… Read more →
- 110 Fault code 110 (displayed as '1 10' on some models) indicates that the boiler's flow temperature probe — an NTC… Read more →
- 111 Fault code 111 on most Chaffoteaux boilers indicates that the flow temperature has climbed to or beyond the maximum… Read more →
- 112 Fault code 112 on a Chaffoteaux boiler indicates that the PCB has detected a problem with the NTC thermistor monitoring… Read more →
- 114 Fault code 114 on Chaffoteaux boilers most commonly indicates a problem with the outdoor (external) temperature sensor… Read more →
- 116 Fault code 116 on Chaffoteaux boilers signals that the manual-reset safety thermostat on the underfloor heating circuit… Read more →
- 118 Fault code 118 on Chaffoteaux boilers signals that the primary circuit water pressure has dropped too low — typically… Read more →
- 120 Fault code 120 on a Chaffoteaux boiler most likely indicates an overheat or high-temperature lockout — the boiler has… Read more →
- 121 Fault code 121 (sometimes shown on the display as '1 21') belongs to the '1xx' group of errors on Chaffoteaux boilers,… Read more →
- 122 Fault code 122 on Chaffoteaux boilers is most commonly associated with a fan or air pressure switch failure, or a… Read more →
- 123 On Chaffoteaux boilers with a two-digit digital display — including the Talia, Pigma, Inoa, and Expert Control ranges —… Read more →
- 1P1 The 1P1 code on Chaffoteaux boilers signals an anomaly in the central heating circuit, most commonly linked to… Read more →
- 1P2 The 1P2 code on a Chaffoteaux boiler indicates that the boiler has detected inadequate water circulation through its… Read more →
- 1P3 The 1P3 code appears on Chaffoteaux boilers when the boiler detects a circulation problem in the primary heating… Read more →
- 1P4 The 1P4 fault code (also shown as F1P4 or sometimes referenced as fault 108 on certain Chaffoteaux models) indicates… Read more →
- 1P5 The 1P5 code on a Chaffoteaux boiler indicates a failed ignition attempt — the boiler tried to light the burner,… Read more →
- 1P6 The 1P6 fault code on a Chaffoteaux boiler indicates a Flow Check Failed lockout. The '1' prefix identifies this as a… Read more →
- 1P7 The 1P7 code sits within Chaffoteaux's '1' series of faults, which all relate to the primary heating circuit — water… Read more →
- 1P8 If your Chaffoteaux boiler is showing '1P8', this is almost certainly not a genuine fault code — it is a display… Read more →
- 201 Fault code 201 on Chaffoteaux boilers indicates that the control board has detected a problem with the domestic hot… Read more →
- 202 Fault code 202 on a Chaffoteaux boiler indicates that the control system has lost a reliable signal from the lower NTC… Read more →
- 203 Fault code 203 on a Chaffoteaux boiler indicates that the boiler has detected a problem with the hot water cylinder… Read more →
- 204 Fault code 204 on a Chaffoteaux boiler indicates that the PCB has detected an abnormal or absent signal from the solar… Read more →
- 205 Fault code 205 on Chaffoteaux boilers signals that the control board has detected a problem with the temperature sensor… Read more →
- 207 Fault code 207 on a Chaffoteaux boiler sits within the 200-series block, which the boiler's control system reserves… Read more →
- 208 Fault code 208 on Chaffoteaux boilers signals that the boiler's built-in monitoring has detected an anomaly in the… Read more →
- 209 Fault code 209 on a Chaffoteaux boiler signals that the domestic hot water (DHW) cylinder or storage tank has reached… Read more →
- 210 Fault code 210 on a Chaffoteaux boiler points to a problem detected within the domestic hot water (DHW) temperature… Read more →
- 211 Fault code 211 on a Chaffoteaux boiler means the boiler's control system has detected a problem with the central… Read more →
- 212 Fault code 212 on a Chaffoteaux boiler most commonly points to a problem with the central heating flow thermistor or… Read more →
- 213 Fault code 213 on Chaffoteaux boilers sits within the 210-series of codes, which relate to the heating return circuit… Read more →
- 214 Fault code 214 on Chaffoteaux boilers signals a problem with the domestic hot water (DHW) temperature sensor. The '2'… Read more →
- 215 Fault code 215 on Chaffoteaux boilers is a cause sub-code linked to a fan-related locking fault (often displayed… Read more →
- 216 Fault code 216 is a locking fault — meaning the boiler shuts down and requires a manual reset — triggered when the… Read more →
- 217 Fault code 217 on Chaffoteaux boilers is the cause code for a C7 locking error, meaning the boiler attempted to start… Read more →
- 240 If your Chaffoteaux boiler is displaying what looks like '240', it is worth knowing that this number does not appear as… Read more →
- 241 Fault code 241 on Chaffoteaux appliances points to a sensor or detection circuit that has gone open-circuit — but the… Read more →
- 250 Fault code 250 on Chaffoteaux boilers sits within the '2xx' series, which covers the domestic hot water (DHW) circuit.… Read more →
- 251 Fault code 251 on Chaffoteaux boilers signals a problem with the Fresh Water Station (FWS) domestic hot water outlet… Read more →
- 252 Fault code 252 on a Chaffoteaux boiler indicates an anomaly on the domestic hot water (DHW) temperature sensor circuit.… Read more →
- 253 '253' does not appear as a confirmed, standalone fault code in Chaffoteaux's published error code tables. If your… Read more →
- 254 Fault code 254 on Chaffoteaux boilers belongs to the 200-series fault group, which covers the Domestic Hot Water (DHW)… Read more →
- 270 If your Chaffoteaux boiler is showing '270' on its display, it is worth knowing that this number is not a verified,… Read more →
- 271 Fault code 271 on Chaffoteaux boilers is not listed in publicly available UK documentation, but on models that use… Read more →
- 2P1 The 2P1 code appears on Chaffoteaux boilers with Expert Control-type displays and indicates a problem detected during… Read more →
- 2P2 Code 2P2 is a non-locking notification code on Chaffoteaux boilers — the 'P' in the middle confirms the boiler flags a… Read more →
- 2P3 If your Chaffoteaux boiler is displaying what looks like '2P3', you are almost certainly seeing the code '5P3' — the… Read more →
- 2P4 The 2P4 code on a Chaffoteaux boiler indicates that the boiler's control system has detected a flow or circulation… Read more →
- 301 Fault code 301 on a Chaffoteaux boiler signals an EEPROM error on the main control board (PCB). The EEPROM is a small… Read more →
- 302 Fault code 302 on a Chaffoteaux boiler indicates that the two internal electronic boards — commonly referred to as the… Read more →
- 303 Fault code 303 on a Chaffoteaux boiler indicates one of two closely related problems depending on the model generation… Read more →
- 304 Fault code 304 on a Chaffoteaux boiler is a deliberate safety lockout that activates when the reset button has been… Read more →
- 401 Fault code 401 on a Chaffoteaux boiler signals a Modem BUS Communication Error — meaning the boiler's main control… Read more →
- 402 Fault code 402 appears on boilers fitted with the Chaffoteaux Expert Control interface (commonly found on the Urbia… Read more →
- 403 On Chaffoteaux boilers with a digital display — including the Expert Control, Urbia, Talia, Pigma EVO, and Inoa… Read more →
- 404 On Chaffoteaux boilers with a digital display — particularly models using the Expert Control platform shared with… Read more →
- 405 Fault code 405 (sometimes displayed as '4 05' with a space) appears on certain Chaffoteaux boilers, most commonly on… Read more →
- 406 Fault code 406 appears on Chaffoteaux Talia, Talia Green, and Talia Green System boilers and signals a problem with the… Read more →
- 411 Fault code 411 on a Chaffoteaux boiler indicates that the external electronic zone control board has detected a problem… Read more →
- 412 Fault code 412 on a Chaffoteaux boiler indicates that the boiler's control system can no longer detect the ambient room… Read more →
- 413 Fault code 413 indicates that the boiler's external zone control board has detected a problem with the Zone 3 ambient… Read more →
- 414 On Chaffoteaux boilers that use a grouped error-code display, this fault is most commonly shown as '4 14' — the first… Read more →
- 415 Fault code 415 appears on Chaffoteaux boilers with a digital display (such as the Talia, Pigma, Inoa and Serelia… Read more →
- 416 The 416 fault code (sometimes displayed as '4 16') on a Chaffoteaux boiler most likely indicates a fan or air pressure… Read more →
- 420 Fault code 420 on a Chaffoteaux boiler falls within the 400-series, which covers faults related to external zone… Read more →
- 421 If your Chaffoteaux boiler is displaying what looks like '421', it is worth knowing upfront that this exact code does… Read more →
- 422 Fault code 422 (sometimes displayed as '4 22' on a split-digit screen) does not appear in any publicly available… Read more →
- 430 Fault code 430 on a Chaffoteaux boiler sits within the 4xx functional group, which covers zone control, temperature… Read more →
- 431 Fault code 431 on a Chaffoteaux boiler most commonly points to a fan, flue, or air pressure circuit problem — the '4'… Read more →
- 432 Fault code 432 on Chaffoteaux boilers indicates that the boiler's control system has detected either an open circuit or… Read more →
- 433 Fault code 433 on a Chaffoteaux boiler belongs to the '4xx' code series, which covers faults in the external peripheral… Read more →
- 434 Fault code 434 does not appear in any verified Chaffoteaux documentation across the brand's known boiler ranges.… Read more →
- 435 Fault code 435 (sometimes displayed as '4 35') appears on Chaffoteaux boilers with a two-part digital display — most… Read more →
- 501 Fault code 501 (shown on the display as 'Err501' alongside the 'R' symbol) means the boiler attempted to fire but could… Read more →
- 502 Fault code 502 means the boiler's ionisation (flame detection) circuit is registering a flame signal at a point in the… Read more →
- 504 Fault code 504 on a Chaffoteaux boiler signals a burner ionisation anomaly detected while the burner is running. It… Read more →
- 510 If your Chaffoteaux boiler is showing what looks like '510', the most likely explanation is that you are reading either… Read more →
- 511 Fault code 511 on a Chaffoteaux boiler almost certainly represents a misread of either 5P1 or 501 — a well-known… Read more →
- 5P1 The 5P1 code on a Chaffoteaux boiler is a notification indicating that the boiler has failed on its first ignition… Read more →
- 5P2 The 5P2 code appears on Chaffoteaux boilers when the burner fails to light on its second ignition attempt — or, in some… Read more →
- 5P3 The 5P3 fault code on a Chaffoteaux boiler indicates that the flame was detected as having gone out unexpectedly while… Read more →
- 5P4 The 5P4 code appears on Chaffoteaux boilers after four consecutive failed attempts to ignite the burner. Chaffoteaux… Read more →
- 601 Fault code 601 on a Chaffoteaux boiler indicates that the boiler's safety system has detected a problem with exhaust… Read more →
- 602 Fault code 602 on Chaffoteaux boilers signals that the boiler has shut itself down as a safety measure. There are three… Read more →
- 604 Fault code 604 on a Chaffoteaux boiler means the boiler's control board has detected that the fan is spinning too… Read more →
- 607 Fault code 607 (sometimes displayed as 6P1 on certain Chaffoteaux models) signals that the boiler's draught-proving… Read more →
- 608 Fault code 608 indicates that your Chaffoteaux boiler's combustion fan has started up as normal, but the air pressure… Read more →
- 610 Fault code 610 on a Chaffoteaux boiler signals that the internal thermal fuse (sometimes called the thermofusible or… Read more →
- 612 Fault code 612 on a Chaffoteaux boiler indicates that the boiler's control system has detected a problem with the flue… Read more →
- 620 Fault code 620 on a Chaffoteaux boiler indicates a problem within the fan and flue airflow system. The boiler's control… Read more →
- 621 Fault code 621 on a Chaffoteaux boiler indicates a problem within the fan and airflow proving circuit. The boiler's… Read more →
- 6P1 The 6P1 fault code indicates that the boiler's control board has detected a delay or failure in the combustion air… Read more →
- 6P2 Fault code 6P2 points to the boiler's air pressure switch (APS) failing to confirm adequate airflow during normal… Read more →
- 6P4 The 6P4 code sits within the 6Px family of faults on Chaffoteaux boilers, all of which relate to the fan and air… Read more →
- 701 Fault code 701 appears on Chaffoteaux boilers that are set up in a multizone heating configuration. It tells you the… Read more →
- 702 Fault code 702 on a Chaffoteaux boiler indicates that the control board is not receiving a valid signal from the NTC… Read more →
- 703 Fault code 703 appears on Chaffoteaux multizone boilers and tells you that the control board has detected either an… Read more →
- 704 Fault code 704 on Chaffoteaux boilers indicates a problem with the return temperature sensor (NTC thermistor) on… Read more →
- 705 Code 705 appears on Chaffoteaux boilers fitted with multi-zone heating systems and signals that the control board has… Read more →
- 706 On Chaffoteaux boilers, '706' is not a conventional three-digit numeric code. These boilers use a flashing LED binary… Read more →
- 711 Fault code 711 appears on multi-zone Chaffoteaux boilers and indicates that the control board has detected a problem… Read more →
- 712 Fault code 712 on a Chaffoteaux boiler signals that the control board has detected a problem with the return water… Read more →
- 713 Fault code 713 appears on Chaffoteaux multizone system boilers (such as the Talia, Niagara, and Inoa) when the control… Read more →
- 714 Fault code 714 on Chaffoteaux boilers falls within the 7xx error code family, which relates to temperature sensor (NTC… Read more →
- 715 If your Chaffoteaux boiler is showing what appears to be '715', it is most likely being misread from a two-part display… Read more →
- 716 Fault code 716 on a Chaffoteaux boiler most likely indicates a fan, air pressure, or flue-related problem, though the… Read more →
- 722 Fault code 722 appears on Chaffoteaux multizone boilers — such as the Niagara Delta range — when the control board… Read more →
- 723 Fault code 723 on a Chaffoteaux boiler indicates that an overtemperature condition has been detected in Zone 3 of the… Read more →
- 725 Fault code 725 on a Chaffoteaux boiler most likely relates to a fan or air pressure circuit fault — the boiler's… Read more →