Glow-worm · Ultracom2 cxi 24/30/35
F28 boiler fault code
Ultracom2 cxi 24/30/35
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What F28 means
F28 indicates an ignition fault.
Safe check
Follow the user guide to reset once only. Do not repeat the reset.
When to contact an engineer
The code remains or returns after one reset; arrange a Gas Safe registered engineer.
Safety notice
A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, anyone feels unwell, or there is an unsafe flame, leave and call 0800 111 999 from outside.
Source and provenance
- Ultracom2 cxi · 0020112601_02 · F28, §15.3, p. 35
installation and maintenance instructions
0020112601_02
- Ultracom2 cxi · 0020085232_01 · §9, p. 13
user instructions
0020085232_01
Renting? Report it to your landlord or housing provider first. They are responsible for gas safety and boiler repairs, and the repair should not cost you.
Did this fix it?
After: Reset the boiler once