(c) Minor Defects. If there is material noncompliance by the landlord with the rental agreement or with Section 5-12-070, and the reasonable cost of compliance does not exceed the greater of $500.00 or one-half of the monthly rent, the tenant may recover damages for the material noncompliance or may notify the landlord in writing of his intention to correct the condition at the landlord's expense; provided, however, that this subsection shall not be applicable if the reasonable cost of compliance exceeds one month's rent. If the landlord fails to correct the defect within 14 days after being notified by the tenant in writing or as promptly as conditions require in case of emergency, the tenant may have the work done in a workmanlike manner and in compliance with existing law and building regulations and, after submitting to the landlord a paid bill from an appropriate tradesman or supplier, deduct from his or her rent the amount thereof, not to exceed the limits specified by this subsection and not to exceed the reasonable price then customarily charged for such work. A tenant shall not repair at the landlord's expense if the condition was caused by the deliberate or negligent act or omission of the tenant, a member of the tenant's family, or other person on the premises with the tenant's consent.