Takagi Non-Condensing Code 741
Remote controller communication failure. The remote controller and the water heater are not communicating — a link fault rather than a failure of either end. Shown as 74 on a T-K4 or T-KJr2 remote; Takagi lists no red LED flash count for it, which makes sense, since without a remote there is nothing to fail.
Also displayed as: 74
Part replacementThe verdict
Replace a part
Often the cheapest fault in the table — the wiring between the two is as likely as either device. Rarely dangerous, but the unit is hard to control until it is fixed.
Typical cost: $150–$500
US estimate for parts and labor. Prices vary by region and by who does the work — see how we estimate costs.
What the manual says
The meaning above is transcribed from the manufacturer's diagnostic documentation for the Non-Condensing — not averaged across the brand.
Source: Takagi Non-Condensing Models On-Demand Water Heater Troubleshooting Guide (p. 12), read Aug 2026 — the manufacturer's own documentation for this exact series.
What you can safely check
- Note whether the remote display is blank, frozen, or showing nonsense.
- Note any recent work near the wiring between the remote and the unit.
- Book a service call.
Frequently asked questions
Is this the same as 761?
No. 741 is your control panel; 761 is Easy-Link, the communication between multiple water heaters.
Code 741 on other Takagi series
The same code number can mean something different on another series — make sure you're reading the page for your exact unit: