Scheindler 330a

I have a single car that keeps shutting down with
Short drive 76 Saftey err
Error drive 75 saftey eta
Any one had these faults before

I get them all the time. I’ve found it’s one of two problems. Dirty interlock contacts or the hoistway door isn’t closing all the time. Check your spirator, gibs etc

Thanks I’ve went through them,I’ll just change them all and see what happens.