Hi all,
I am wondering if anyone can offer me some advice on repairing a gicar control box. This is from my VBM domobar super (one of many things wrong with it!!!). What happens in is that when the boiler autofill kicks in, the control box makes a on/off switching noise continually. It sounds to me very much like the relay going on and off very quickly. It continually lights up the autofill activation LED, but only occasionally seems to get enough power to activate the autofill 2-way valve. The noise will eventually stop, as it does occasionally let some water through, but is obviously faulty. Other than this autofill problem, it functions as expected.
I have pulled out the control box and rewired it off the coffee machine straight from mains, and the problem was still there. Indicating it is a problem with the control box rather than machine wiring.
So getting to my question! im wondering how I go about tracking down the faulty component in the control box. ie, relay, transistor, capacitor, resistor, transformer, etc. Is there a sensible way to approach this, or do have to take out each component, test it and replace if required? Would the relay be a good place to start, or is the continual switching probably indicate some other problem?
Than ks for any help you can offer.
For information: control box is RL30/1E/2C/C.
Thanks!


I am wondering if anyone can offer me some advice on repairing a gicar control box. This is from my VBM domobar super (one of many things wrong with it!!!). What happens in is that when the boiler autofill kicks in, the control box makes a on/off switching noise continually. It sounds to me very much like the relay going on and off very quickly. It continually lights up the autofill activation LED, but only occasionally seems to get enough power to activate the autofill 2-way valve. The noise will eventually stop, as it does occasionally let some water through, but is obviously faulty. Other than this autofill problem, it functions as expected.
I have pulled out the control box and rewired it off the coffee machine straight from mains, and the problem was still there. Indicating it is a problem with the control box rather than machine wiring.
So getting to my question! im wondering how I go about tracking down the faulty component in the control box. ie, relay, transistor, capacitor, resistor, transformer, etc. Is there a sensible way to approach this, or do have to take out each component, test it and replace if required? Would the relay be a good place to start, or is the continual switching probably indicate some other problem?
Than ks for any help you can offer.
For information: control box is RL30/1E/2C/C.
Thanks!




and they dont want to know..
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