Thanks for the question. There is no bypass cap or dummy filter for the RFG29PHDRS, and water should be able to flow without a cartridge installed. If yours does not, please submit your contact information to our support team through the link below, or call 800-SAMSUNG to speak with an agent who will be happy to assist you.
Online support form: http://www.samsung.com/us/support/o...
- Ms. Samsung
answered 2 years, 6 months ago