Boiler Error F22 - What It Means and How to Fix

What Does F22 Mean on a Boiler? Decoding That Pesky Code! Picture this: it's a chilly evening, you're looking forward to a warm house, maybe a hot shower, and then you glance at your boiler. Instead of its usual quiet hum, there's a flashing light, a grim little display, and the letters "F22" staring back at you. Ugh. If you've ever seen this, you know that immediate sinking feeling. Panic can start to bubble up (pun intended!) as you imagine cold showers and hefty repair bills. But here's the good news: while an F22 code definitely means there's an issue, it's often one of the most common and, thankfully, one of the easiest boiler problems to fix yourself. ...

December 3, 2025 · 9 min · Noon Pasquale