Question about IDEC Micro-1

Hello,
I am a new member. I use an old automatic wood oven. Its controlled with a IDEC Micro-1 PLC. There is now a mistake.
When I switch on the oven and the PLC is booting, the

following message is shown on the display from the program

loader: INITIALIZE
INITIALIZE>
INITIALIZE>>
INITIALIZE ERROR
Does someone knows some about this message?

Many thanks for every answer
Hans

Where do you see this error? the PLC does not have a display so does your oven have a HMI (screen) ? will the PLC boot without the oven on? so can you full boot the PLC after the oven in on?

Is the over manufacture still in business? it maybe faster to contact them and see if they have an idea of why the error