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Problem with Nest Heatlink

Supernintento Chalmers · 2018-08-26 13:12:16

The problem is with the hot water control on the heatlink. AFAIK the relay should close across terminals 5 and 6 when hot water is turned on at the stat. The problem here is that this relay is closing by itself. If I kill power to the heatlink, the relay opens, but at random times the relay is getting closed and refusing…

26-08-2018 1:12pm

#1

Supernintento Chalmers

Registered Users, Registered Users 2 Posts: 570 ✭✭✭

Join Date: July 2013

Posts: 521

The problem is with the hot water control on the heatlink. AFAIK the relay should close across terminals 5 and 6 when hot water is turned on at the stat. The problem here is that this relay is closing by itself. If I kill power to the heatlink, the relay opens, but at random times the relay is getting closed and refusing to open, regardless of what you do with the stat, etc.

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#2 26-08-2018 1:37pm

Supernintento Chalmers

Registered Users, Registered Users 2 Posts: 570 ✭✭✭

Join Date: July 2013

Posts: 521

This may be the cause.
https://nest.com/uk/support/article/How-does-the-Nest-Thermostat-help-prevent-Legionella-bacteria

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