My Landlord Wants Me To Sign A Lease That Disregards The Pa Landlord Tenant Laws And Gives Them The Right To Basically Do Whatever They Want Of We Are Even 1 Day Late. Is This Legal Or Does The Law Apply First?

Need some advice regarding landlord situation where the landlord trying to get us to sign lease for the second time which is totally landlord orientated and disregards any PA landlord-tenant law and says they can take possession of our property , all we own if we are even 1day late on the rent and that we would be responsible for the entire years amount no matter what we have paid to date.. They have 2100 up front , we have paid 7 months rent already. Also central air was to provided and we have asked 3 times and no response, HOT!!!!!!