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Demirdöküm Technical Centre

Onarhane is an independent technical service provider. Brand names belong to their respective owners. Unless explicitly stated, Onarhane is not an authorised service centre, dealer or official representative of those brands. For products under manufacturer warranty, use the manufacturer’s authorised service channel.

Boiler

Demirdöküm Fault Guide

Choose your Demirdöküm appliance type to view common faults, safe checks and verified error-code references. Exact model and series details are important for a correct assessment.

Device

Boiler

All Symptoms

Boiler · Not igniting→Boiler · No hot water→Boiler · Pressure keeps dropping→Boiler · Pressure rising→Boiler · Radiators not heating→Boiler · Hot water fluctuates→Boiler · Leaking water→Boiler · Making noise→Boiler · Error code on display→Boiler · Needs frequent reset→Boiler · Turns off unexpectedly→Boiler · High gas consumption→Boiler · Pump not running or no circulation→Boiler · Fan is not running→Boiler · Radiators heat unevenly→Boiler · Flame starts then stops→
Demirdöküm

Fault guide by appliance

Choose the supported appliance type to see related symptoms, verified codes and safety notes.

Boiler16 symptoms · 4 verified codes＋

Systems assessed: The relevant water, airflow, heating, motor, sensor and electronic-control systems are assessed together for the device type.

Safe observations: Note when the symptom appears, unusual sound or water, display messages and whether the device completes its normal cycle.

Share with service: Exact model, symptom timing, error code if shown, district/neighbourhood and a short photo or video when useful.

CautionIf gas is smelled, do not use the boiler. Close the gas valve if safe, ventilate, avoid electrical switches or open flames and contact the relevant gas emergency service. Also stop use for major water leakage, smoke or repeated electrical faults.
Not igniting→No hot water→Pressure keeps dropping→Pressure rising→Radiators not heating→Hot water fluctuates→Leaking water→Making noise→Error code on display→Needs frequent reset→Turns off unexpectedly→High gas consumption→Pump not running or no circulation→Fan is not running→Radiators heat unevenly→Flame starts then stops→

Verified error codes

F01Overheating conditionF04Ionisation / flame detection faultF05Airflow / pressure-switch faultF10Heating-system water pressure low
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Onarhane is an independent technical service provider. Brand names belong to their respective owners. Unless explicitly stated, Onarhane is not an authorised service centre, dealer or official representative of those brands. For products under manufacturer warranty, use the manufacturer’s authorised service channel.