Takagi Non-Condensing Code 761
Easy-Link communication failure. Easy-Link is Takagi's system for linking several water heaters to work together. This code reports a communication failure across that link, and Takagi lists it for the three-digit display only. On a single-unit installation it should not appear.
Call a proThe verdict
Call a licensed plumber
A multi-unit installation fault, usually in the link wiring or a DIP switch rather than in a heater — which makes it one of the cheaper ones to resolve.
Typical cost: $0–$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 how many units are linked and whether they all show the code.
- If a unit was recently added, replaced, or rewired, contact that installer.
- Do not open the units to change switch settings yourself.
Frequently asked questions
I have one water heater and I am seeing 761.
Then it is configured as part of an Easy-Link system when it is not. That is a switch setting on the computer board, and worth saying when you call.
Code 761 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: