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Main eco30 combi error 83 communication error

Main eco30 combi error 83 communication error

Main eco30 combi error 83 communication error

Hi all. Looking for some help pls. I have a main compact eco30 boiler.
The display flashes on and off with E83.
When I look this up, it means COMMUNICATION ERROR. There is also a spanner flashing. The boiler runs continuously and can only be switched off at the wall, instead of being controlled by the thermostat.
When this happened I noticed that there was no power to my wireless thermostat controller.
As I thought this was the problem, I replaced for a new salus unit, and there is now...

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by Teddy2018

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