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Keston · Boilers and HVAC

Keston Heat 45, 55, 45P and 55P boilers

Product information, applicable models, official documentation and 17 indexed error-code explanations for Keston Heat 45, 55, 45P and 55P boilers.

Keston Heat 45, 55, 45P and 55P boilers
17indexed codes
1named models or series
1official links
Product overview

About Keston Heat 45, 55, 45P and 55P boilers

Keston Heat 45, 55, 45P and 55P boilers is indexed in the Boilers and HVAC directory for United Kingdom, Ireland and Romania. This page brings the available product context, model references, documentation and diagnostic codes together in one place.

The codes below apply only where the linked code page lists this product or model. Confirm the complete model identifier because manufacturers may reuse the same characters across different ranges, generations and control systems.

An error code describes a condition detected by the product; it does not prove that a named component has failed. Follow the exact manual, avoid repeated resets and use an appropriately qualified technician whenever checks require internal access.

Applicability

Models and series

Heat 45; Heat 55; Heat 45P; Heat 55P
Complete directory

All Keston Heat 45, 55, 45P and 55P boilers error codes

Showing 1–17 of 17

BCC FaultKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaBCC Fault – Keston Heat 45/55 error messageKeston documents “BCC Fault” for Heat 45, 55, 45P and 55P boilers as a fault condition in which…Cylinder Thermistor FaultKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaCylinder Thermistor Fault – Keston Heat 45/55 error messageKeston documents “Cylinder Thermistor Fault” for Heat 45, 55, 45P and 55P boilers as a fault condition in…External Interlock OffKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaExternal Interlock Off – Keston Heat 45/55 error messageKeston documents “External Interlock Off” for Heat 45, 55, 45P and 55P boilers as a fault condition in…False Flame LockoutKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaFalse Flame Lockout – Keston Heat 45/55 error messageKeston documents “False Flame Lockout” for Heat 45, 55, 45P and 55P boilers as a fault condition in…Fan FaultKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaFan Fault – Keston Heat 45/55 error messageKeston documents “Fan Fault” for Heat 45, 55, 45P and 55P boilers as a fault condition in which…Flame LossKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaFlame Loss – Keston Heat 45/55 error messageKeston documents “Flame Loss” for Heat 45, 55, 45P and 55P boilers as a fault condition in which…Flow/Return ReversedKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaFlow/Return Reversed – Keston Heat 45/55 error messageKeston documents “Flow/Return Reversed” for Heat 45, 55, 45P and 55P boilers as a fault condition in which…Flow Thermistor FaultKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaFlow Thermistor Fault – Keston Heat 45/55 error messageKeston documents “Flow Thermistor Fault” for Heat 45, 55, 45P and 55P boilers as a fault condition in…Flue Thermistor FaultKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaFlue Thermistor Fault – Keston Heat 45/55 error messageKeston documents “Flue Thermistor Fault” for Heat 45, 55, 45P and 55P boilers as a fault condition in…Ignition LockoutKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaIgnition Lockout – Keston Heat 45/55 error messageKeston documents “Ignition Lockout” for Heat 45, 55, 45P and 55P boilers as a fault condition in which…Low Mains VoltageKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaLow Mains Voltage – Keston Heat 45/55 error messageKeston documents “Low Mains Voltage” for Heat 45, 55, 45P and 55P boilers as a fault condition in…Low Water PressureKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaLow Water Pressure – Keston Heat 45/55 error messageKeston documents “Low Water Pressure” for Heat 45, 55, 45P and 55P boilers as a fault condition in…Outside Sensor FaultKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaOutside Sensor Fault – Keston Heat 45/55 error messageKeston documents “Outside Sensor Fault” for Heat 45, 55, 45P and 55P boilers as a fault condition in…Overheat LockoutKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaOverheat Lockout – Keston Heat 45/55 error messageKeston documents “Overheat Lockout” for Heat 45, 55, 45P and 55P boilers as a fault condition in which…PCB FaultKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaPCB Fault – Keston Heat 45/55 error messageKeston documents “PCB Fault” for Heat 45, 55, 45P and 55P boilers as a fault condition in which…Return Thermistor FaultKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaReturn Thermistor Fault – Keston Heat 45/55 error messageKeston documents “Return Thermistor Fault” for Heat 45, 55, 45P and 55P boilers as a fault condition in…Too Many ResetsKeston · Keston Heat 45, 55, 45P and 55P boilers · United Kingdom, Ireland and RomaniaToo Many Resets – Keston Heat 45/55 error messageKeston documents “Too Many Resets” for Heat 45, 55, 45P and 55P boilers as a fault condition in…