31 Pa. Code § 146.7 : INSURANCE — MISCELLANEOUS PROVISIONS — UNFAIR INSURANCE PRACTICES — UNFAIR CLAIMS SETTLEMENT PRACTICES — Standards for prompt, fair and equitable settlements applicable to insurers

(a) Acceptance or denial of a claim shall comply with the following:
(1) Within 15 working days after receipt by the insurer of properly executed proofs of loss, the first-party claimant shall be advised of the acceptance or denial of the claim by the insurer. An insurer may not deny a claim on the grounds of a specific policy provision, condition or exclusion unless reference to the provision, condition or exclusion is included in the denial. The denial shall be given to the claimant in writing and the claim file of the insurer shall contain a copy of the denial.
(2) Where there is a reasonable basis supported by specific information available for review by the insurance regulatory authority that the first-party claimant has fraudulently caused or contributed to the loss by arson or other illegal activity, the insurer is relieved from the requirements of this subsection; provided, however, that the claimant shall be advised of the acceptance or denial of the claim within a reasonable time for full investigation after receipt by the insurer of a properly executed proof of loss.
(b) If a claim is denied for reasons other than those described in subsection (a) and is made by any other means than writing, an appropriate notation shall be made in the claim file of the insurer.
(c) The following provisions govern acceptance or denial of a claim where additional time is needed to make a determination:
(1) If the insurer needs more time to determine whether a first-party claim should be accepted or denied, it shall so notify the first-party claimant within 15 working days after receipt of the proofs of loss giving the reasons more time is needed. If the investigation remains incomplete, the insurer shall, 30 days from the date of the initial notification and every 45 days thereafter, send to the claimant a letter setting forth the reasons additional time is needed for investigation and state when a decision on the claim may be expected.
(2) Where there is a reasonable basis supported by specific information available for review by the insurance regulatory authority for suspecting that the first-party claimant has fraudulently caused or contributed to the loss by arson or other illegal activity, the insurer is relieved from the requirements of this subsection; provided, however, that the claimant shall be advised of the acceptance or denial of the claim by the insurer within a reasonable time for full investigation after receipt by the insurer of a properly executed proof of loss.
(d) Insurers may not fail to settle first-party claims on the basis that responsibility for payment should be assumed by others except as may otherwise be provided by policy provisions.
(e) Insurers may not continue negotiations for settlement of a claim directly with a claimant who is neither an attorney nor represented by an attorney until the rights of the claimant may be affected by a statute of limitations or a policy or contract time limit, without giving the claimant written notice that the time limit may be expiring and may affect the rights of the claimant. The notice shall be given to first-party claimants 30 days, and to third-party claimants 60 days, before the date on which the time limit may expire.
(f) An insurer may not make statements which indicate that the rights of a third-party claimant may be impaired if a form or release is not completed within a given period of time unless the statement is given for the purpose of notifying the third-party claimant of the provision of a statute of limitations.

31 Pa. Code § 146.7