Help – Diplomat ADP8322 Doesnt fill with water

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  • #39954
    marauder
    Participant

    When I start a cycle on this machine the pump operates to empty any water out of the system and then the incoming water starts to fill the machine. After a few seconds the machine stops the incoming water and starts an intermittent audible signal and flashes the green lamp on top of the door, presumably telling me that there is a fault. Can anyone tell me what may be the cause please. It doesn’t matter which cycle I choose the problem still occurs.
    I have recently had the machine out to repair a leek on the copper pipe supplying it with cold water, but I have checked that the supply pipe is not kinked and there is plenty of pressure at the intake point. I do not have any paperwork on the machine so I am now at the “pulling out hair” point. Thankyou.

    #264280
    Penguin45
    Participant

    Re: Help – Diplomat ADP8322 Doesnt fill with water

    Count the flashes; ie 1-2-3-4-pause-repeat.

    Penguin45.

    #264281
    marauder
    Participant

    Re: Help – Diplomat ADP8322 Doesnt fill with water

    I have tried to run through the cycle again and the machine empties the existing water out and starts to fill with fresh water. The water then stops entering and the audible alarm starts. when I then opened the door the green display light flashes 7 times and then stops and repeats the same pattern. Thanks for any help which you may be able to supply.

    #264282
    Penguin45
    Participant

    Re: Help – Diplomat ADP8322 Doesnt fill with water

    F7 is flow meter failure. Normal problem is the edge connector oxidising. Removing it, cleaning the connector and contact pads usually gets thigs going again. Give the connector a pinch before re-fitting.

    Flow meter is in ithe fill matrix located under the left-hand side panel.

    Power off if you intend to do this yourself.

    Penguin45.

    #264283
    marauder
    Participant

    Re: Help – Diplomat ADP8322 Doesnt fill with water

    Thanks very much I will try this today.

    #264284
    marauder
    Participant

    Re: Help – Diplomat ADP8322 Doesnt fill with water

    I have tried the given solution to my problem to no avail.
    I have cleaned the printed circuit board connections on the water flow impeller, (via removal of left hand side panel) (this thing is mounted towards the bottom left hand side with two black wires connected to it). Closed up connector so that a tight connection is made between the Printed Circuit Board (PCB) and the two pin connector. Removed front panel and cleaned connections to “the other end”. Problem is still present (7-flashes then a delay, ditto, etc).
    I have since monitored the machine whilst executing the wash cycle and the following happens;
    1. Wash cycle started.
    2. Remnant water is pumped out, everything is fine and flowing well.
    3. The mains supply fresh water input cycle then starts, as can be monitored from the left hand side of the machine with the panel removed (look at the great big plastic lump with wires on the bottom left hand side). (This water flowing in the machine turns round the impeller which has a magnet mounted on it. The PCB presumably picks up the magnetic rotations in the form of electromagnetic pulses back to the controller).
    3. Machine pauses, starts flashing and peeping, (7-times), and pumps out the water.
    I have removed this PCB (numbered 61616 03) and it has, what I think is a reed switch mounted on it. Is it likely that this PCB needs replacing, or is the problem possibly at the other end of these black wires?
    More info required please.
    4. I pull my hair out.

    #264285
    karv
    Participant

    Re: Help – Diplomat ADP8322 Doesnt fill with water

    most likely you will need new bit , i don,t think u can get on its own belive u may need to buy new air break aka the plastic chamber with new 1 sensor bult in, unless this site as them on there own.
    the odds of being the main module or wire loom is possable but are low odds

    #264286
    Penguin45
    Participant

    Re: Help – Diplomat ADP8322 Doesnt fill with water

    THIS is the replacement component – it is the whole assembly, of course.

    Given that you have identified that the pcb has a reed switch mounted on it (without me telling you 😀 ), you could check the function with a test meter and a magnet. The likes of Radio Spares and Maplins sell reed switches……..

    I have never changed a pcb for this fault, although there could be a first time for everything.

    Penguin45.

    #264287
    marauder
    Participant

    Re: Help – Diplomat ADP8322 Doesnt fill with water

    Problem has now been sorted thankyou.
    For anyone else following with the same problems here is the info;
    I removed the connector from the PCB and attached an ohm-meter to the connections, leaving the PCB in its correct working position. The meter showed a low resistance, (0-ohms on my cheepo meter).
    I started the wash cycle and even with the impeller spinning, still 0-ohms. It appeared that the reed switch had welded itself together.
    I took the PCB out of the housing and down to Maplins where I purchased 2-off CL37 Micro Reed switches at £1.29 each, good job I purchased two as I wrecked the first one trying to bend the wires into place.
    BEFORE YOU UNSOLDER AND REMOVE THE OLD REED SWITCH be careful to notice exactly how the original is orientated. I removed the old reed Switch and soldered the new one into place.
    I then replaced the PCB back into the correct position on the machine.
    I connected the ohm-meter acros the PCB connections and 0-ohms was showing.
    I started a wash cycle and when water was flowing the meter showed over 99 ohms ( which is a maximum on my meter), I assumed that this meant that the reed switch was switching ok.
    Connected system back together and started a wash cycle. HEY PRESTO

    #264288
    Penguin45
    Participant

    Re: Help – Diplomat ADP8322 Doesnt fill with water

    Nicely done!

    Penguin45.

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