You likely would have to review your suspension document and any other agreement you have with the employer to find out whether the employer must be paying you.
However, the purpose of a suspension likely is to punish a worker. It would not be much of a punishment to pay a worker to not be doing anything.
In WA, in general, an employer must pay an employee only for the hours actually worked. If you are not doing any work for the employer while suspended, the employer likely does not have to be paying you.
However, without knowing your specific situation, no one can definitively answer whether your employer must be paying you. For a specific answer, you should review your facts and options with your attorney.