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Teco RA680 thermostat kookoo

gunzo

By gunzo,
in General Reefkeeping_

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gunzo Apprentice

gunzo

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need abit of help on this .. also electrical guys whose good with this ..

With the preset temperature, the chiller used t o work as advertised

Just yesterday .. it decided not to stop cooling .. cooling the water down to 25 degrees and still going .. :(

Disconnected and stripped apart the brain of the unit .. seems like the relay tripped and stays tripped to cool the water down permanently ..

here's the strange thing when I finally decided it's the relay ..

I disconnected the thermostat and the brain flag a fault .. and then I connected back the thermostat back .. walla .. it works as advertised again ..

but here's the thing .. If I turn it off and on again ..with the thermostat connected .. it's stuck to permanent cool again .. I have to disconnect the thermostat with the power on to reset the thing ..

HELP :erm::erm:

:thanks:

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