Error 40 have seen it in error logs, was advised by drager, if no reoccurance to ignore. manual says its a variables conflic, cause software problem or external interface. Remsdy, switch device off and on again if this does not help proceed as follows. replace WT2 controller PCB.
has paul advised i would remove all external leads and devises and reseat all internal connections, long process but hay ho.
Paul doolan at drager is also helpfull
