BoilerFaultCodesWarmhaus rE28 Fault Code
Also written as RE28 — same fault.
The Warmhaus rE28 fault code means: your boiler has been reset too many times in a short period and has temporarily locked itself to prevent damage.. It appears on 1 Warmhaus model in our database.
Technical description: Maximum locking number reached – boiler has reached the maximum reset number (5 times in an hour) – attempt 1 reset each hour thereafter.
What causes the Warmhaus rE28 fault?
This fault occurs when the boiler has been manually reset five times within a single hour, causing the system to temporarily lock you out for safety. It usually stems from an underlying ignition or flame issue that keeps causing the boiler to fail, leading the user to keep pressing the reset button. The root cause is typically a worn-out ignition part or a fault with the gas supply that prevents the boiler from staying lit.
DIY fix possible
Wait for 60 minutes without touching the boiler to allow the internal timer to clear.Check that your gas pre-pay meter (if applicable) has credit.Ensure any external gas valves are open and that other gas appliances are working.After the hour has passed, perform one single reset to see if the boiler fires up.
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Gas Safe Register →Warmhaus models that show the rE28 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Warmhaus rE28 fault code information on this page is sourced and cross-checked against the official Warmhaus service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026