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
Other Takagi series report code 761 under the same fault name, but each manual is transcribed separately and they do not read alike:
Don't confuse this with
One other Takagi Non-Condensing code points at a link between two boards too. They are the same symptom reported from a different place in the unit, so which one the display shows is what tells you where to look: