Error 360

Safety precautions:

- If the boiler is gas-fired, do not attempt any internal repairs unless you are a Gas Safe registered engineer. Isolate mains electrical power to the boiler before opening any covers. If you smell gas, ventilate the area, do not use electrical switches, and call your gas emergency number immediately.

- For oil boilers use a qualified oil-service engineer for burner control work. Always isolate electrical supply before inspecting the unit.

- Wear eye protection and avoid touching live terminals. If in doubt, stop and call a qualified engineer.

Initial checks a homeowner can do (safe, non-intrusive):

1. Note the exact error code and any flashing indicators on the display. Write down what is shown before attempting anything.

2. Try a simple reset: use the boiler reset button (press and hold for about 3 seconds) or follow the model-specific reset procedure in the manual. Wait and observe whether the fault clears or immediately returns.

3. Check the boiler has power and the mains fuse has not blown. Confirm the external room/stat programmer settings are calling for heat/hot water so the boiler should try to start.

4. Visually check for obvious signs of recent work: a service engineer may have recently been at the boiler and fitted parts. If you had recent repairs, tell the attending engineer the fault appeared after that work.

5. Photograph labels and any accessible module plug (without removing covers). Note any part numbers or printed labels you can see from the outside; this helps the engineer identify whether the fitted module is correct.

Specific diagnostic and (limited) fix steps an engineer would perform or that you can prepare for the engineer:

1. If reset does not clear the error, the next step is to isolate electrical supply and remove the outer cover so the control box and code plug/module can be inspected. Do not do this yourself unless qualified.

2. Check the KIM/HCM/code plug seating and connector for corrosion, bent pins, water ingress, or damage. A poorly seated plug can sometimes trigger a recognition error.

3. Verify the module part number against the boiler’s required part for that exact model/variant. Error 360 commonly appears when the wrong variant module has been fitted (for example during previous repairs or if the wrong spare part was used).

4. If the module is present but faulty, replace it with the correct factory-specified module/code plug. After replacement the engineer will re-fit covers, reapply power and run the boiler through ignition and safety checks.

5. If the control box or burner control unit itself is suspected faulty (rare but possible), the engineer will check communication between the control PCB and the module and may replace or reprogramme the control box.

6. Once repaired, the engineer should run the boiler through full operational and safety tests (burner ignition, flame sensing, safety interlocks, correct CHP/DHW switching where applicable) and clear any stored faults per manufacturer guidance.

When to call a professional:

- If the reset does not clear the fault, or if you see any signs of a wrong or damaged module, call a qualified heating engineer. Replacing or reconfiguring control modules, and working on burner control circuitry, must be done by a competent, registered engineer (Gas Safe for gas boilers or an appropriate oil-service engineer for oil units).

- Tell the engineer the exact error code (360) and any part numbers or photos you took; this will help them bring the correct replacement module and tools.

Additional notes:

- Do not repeatedly reset the boiler to force it to run; repeated resets can mask underlying faults and may create unsafe conditions.

- This fault is commonly caused by an incorrect or incompatible heat/control module being fitted previously, or by a faulty code plug. The fix usually involves fitting the correct module and verifying settings. Always use genuine or manufacturer-approved replacement parts and a qualified engineer for the repair.