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 Post subject: Economy 7 problem
PostPosted: Thu Jan 25, 2018 1:01 pm 
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Hello wonder if anyone can suggest a possible cause of this

Its an economy 7 double element water tank, bottom one being E7, top element being boost thats switched on at night by a Horstmann electronic 7 maxistore timer.
The economy 7 meter is a two number meter with a telemetry unit attached which turns on the E7 electricity and records the usages

In the early hours of the morning when the heater is in operation the RCB on the left hand side of the consumer unit trips and all sockets and lights go off, When I turn the timer off to the emersion heater and turn the rcb back on its ok, and all lights and sockets restored. if I then turn the horstman back on to Timed it trips again.

It heats water for a period of time so doesn't trip immediately that the E7 circuit switches on
Horstman timer keeps time and switches on Boost the upper element ok which seems to be working


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 Post subject: Re: Economy 7 problem
PostPosted: Thu Jan 25, 2018 6:03 pm 
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I think you mean RCD, but it means the heater or stat has failed, needs a new one. (Ind if you change one.............change them both)

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 Post subject: Re: Economy 7 problem
PostPosted: Thu Jan 25, 2018 6:34 pm 
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Yes I did Someone-else, guessed as much, but wasn't sure as it wasn't tripping out straight away the E7 electric was coming on, but after it had been working a while so I was getting some hot water. Many thanks


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