Home › Home, Housing & Repair

On-demand water heater fails to ignite for hydronic heating

🏠 homeproduct problemSingle report ●●●●● severity 3/5

A homeowner reports that their Takagi T-K Jr on-demand water heater fails to ignite when the hydronic floor heating system's pump activates, even though it ignites correctly when a hot water faucet is opened.

Who's affected: A homeowner with a hydronic floor heating system powered by an on-demand water heater.

⚠️ Single report. This is one person's account. We mark it so until more voices confirm it.

What people do today

🔧 Fix this

Ideas a builder, maker or community group could start on:

  1. A diagnostic guide specifically for hydronic heating integration with tankless water heaters
  2. A flow-sensing bypass valve kit that ensures minimum flow requirements for tankless ignition in closed-loop systems
  3. A smart controller that manages pump activation and ignition signals to ensure the heater stays active during heating cycles
I want to build this

Real voices

“the pump turns on but the water heater isn't igniting”

Source: Stack Exchange (diy) · CC BY-SA 4.0, user-contributed content from Stack Exchange; summarized and modified

Related problems

🏠 homeproduct4 reports

Zillow AI chatbot functionality and interface issues

●●●●● · A Zillow app user and possibly others experiencing the new AI interface update.
🏠 homesocial2 reports

Non-compliant concrete stair riser height

●●●●● · A homeowner
🏠 homeproduct2 reports

Leaking standing shower door runner and perimeter

●●●●● · A homeowner with an aging standing shower unit.

FixHumanityDaily

The most important new problems, and ideas to fix them, in your inbox.

Placeholder: no data is collected yet.