ATAG · Boilers and HVAC
ATAG iC, iS and iR boiler range — 2015 to 2018
Product information, applicable models, official documentation and 16 indexed error-code explanations for ATAG iC, iS and iR boiler range — 2015 to 2018.
16indexed codes
1named models or series
1official links
About ATAG iC, iS and iR boiler range — 2015 to 2018
ATAG iC, iS and iR boiler range — 2015 to 2018 is indexed in the Boilers and HVAC directory for United Kingdom. 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.
Models and series
iC; iS; iR; iC Economiser
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Common ATAG iC, iS and iR boiler range — 2015 to 2018 codes
Frequently useful high-priority and recently documented entries.
154ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 154 error code – Flow temperature rising too quickly or return hotter than flowATAG identifies code 154 as: Flow temperature rising too quickly or return hotter than flow.151ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 151 error code – Fan speed control fault or defective control unitATAG identifies code 151 as: Fan speed control fault or defective control unit.133ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 133 error code – No flame after five ignition attemptsATAG identifies code 133 as: No flame after five ignition attempts.129ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 129 error code – Fan does not startATAG identifies code 129 as: Fan does not start.119ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 119 error code – Link missing at X2 positions 4 and 5ATAG identifies code 119 as: Link missing at X2 positions 4 and 5.118ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 118 error code – Pressure below 1 bar or pump pressure rise too low; pump not detectedATAG identifies code 118 as: Pressure below 1 bar or pump pressure rise too low; pump not detected.117ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 117 error code – Pressure above 3 bar or pump pressure rise too highATAG identifies code 117 as: Pressure above 3 bar or pump pressure rise too high.111ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 111 error code – Maximum pressure exceededATAG identifies code 111 as: Maximum pressure exceeded.
Complete directory
All ATAG iC, iS and iR boiler range — 2015 to 2018 error codes
Showing 1–16 of 16
10ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 10 error code – Outdoor sensor faultATAG identifies code 10 as: Outdoor sensor fault.105ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 105 error code – Venting programme activeATAG identifies code 105 as: Venting programme active.110ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 110 error code – Safety temperature exceededATAG identifies code 110 as: Safety temperature exceeded.111ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 111 error code – Maximum pressure exceededATAG identifies code 111 as: Maximum pressure exceeded.117ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 117 error code – Pressure above 3 bar or pump pressure rise too highATAG identifies code 117 as: Pressure above 3 bar or pump pressure rise too high.118ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 118 error code – Pressure below 1 bar or pump pressure rise too low; pump not detectedATAG identifies code 118 as: Pressure below 1 bar or pump pressure rise too low; pump not detected.119ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 119 error code – Link missing at X2 positions 4 and 5ATAG identifies code 119 as: Link missing at X2 positions 4 and 5.129ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 129 error code – Fan does not startATAG identifies code 129 as: Fan does not start.133ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 133 error code – No flame after five ignition attemptsATAG identifies code 133 as: No flame after five ignition attempts.151ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 151 error code – Fan speed control fault or defective control unitATAG identifies code 151 as: Fan speed control fault or defective control unit.154ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 154 error code – Flow temperature rising too quickly or return hotter than flowATAG identifies code 154 as: Flow temperature rising too quickly or return hotter than flow.20ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 20 error code – Flow sensor faultATAG identifies code 20 as: Flow sensor fault.40ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 40 error code – Return sensor faultATAG identifies code 40 as: Return sensor fault.50ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 50 error code – Domestic hot-water sensor faultATAG identifies code 50 as: Domestic hot-water sensor fault.61ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 61 error code – Bus communication faultATAG identifies code 61 as: Bus communication fault.78ATAG · ATAG iC, iS and iR boiler range — 2015 to 2018 · United KingdomATAG 78 error code – Water pressure out of rangeATAG identifies code 78 as: Water pressure out of range.