Legal Question in Real Estate Law in Oregon

Sorry to hear about your situation and you definitely need to get in touch with your landlord immediately (by phone and in writing) letting him know that he needs to get it fixed. Withholding money should be a last resort as there's a chance that your landlord will give you a termination notice for nonpayment of your fees (or perhaps without cause), so really without looking at the lease or all of the specifics of your situation, I would recommend consulting with your own attorney in private before withholding any amounts due under the lease agreement.