Just moved from an apartment to a home with a Goldstar heating and air conditioning wall unit. I have no handbook. How do I change from 22 to 24 for air. How do I switch from air to heat when needed? Thanks

Crab house

775 S Dupont Hwy, New Castle, DE 19720, USA

Appliance store

348 Churchmans Rd, New Castle, DE 19720, USA

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129 N Dupont Hwy, New Castle, DE 19720, USA

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610 West Basin Rd Suite 100, New Castle, DE 19720, USA