Carrier 50EZ-A30 Installation Instructions Manual

Also see for COMFORT 50EZ-A30: Owner's information manual Owner's information manual Product data Installation instructions

Contents

29OF2OF1ONQUIETSHIFT1203060603090INTERVAL TIMER OFFP3DFTO R W2 Y CT2 C C ODFTT1 Y P1 J1SPEEDUPSpeedupPins Defrost intervalDIP switchesQuietShiftA08020Fig. 17 -- Defrost ControlStep 4 — Electrical Controls and WiringInspect and check the electrical controls and wiring annually. Besure to turn off the electrical power to the unit.Remove access panels (see Fig. 19) to locate all the electricalcontrols and wiring. Check all electrical connections for tightness.Tighten all screw connections. If any discolored or burnedconnections are noticed, disassemble the connection, clean all theparts, restrip the wire end and reassemble the connection properlyand securely.After inspecting the electrical controls and wiring, replace all thepanels. Start the unit, and observe at least one complete coolingcycle to ensure proper operation. If discrepancies are observed inoperating cycle, or if a suspected malfunction has occurred, checkeach electrical component with the proper electricalinstrumentation. Refer to the unit wiring label when making thesecheckouts.Step 5 — Refrigerant CircuitInspect all refrigerant tubing connections and the unit base for oilaccumulation annually. Detecting oil generally indicates arefrigerant leak.If oil is detected or if low performance is suspected, leak--test allrefrigerant tubing using an electronic leak detector, or liquid--soapsolution. If a refrigerant leak is detected, refer to Check forRefrigerant Leaks section.If no refrigerant leaks are found and low performance is suspected,refer to Checking and Adjusting Refrigerant Charge section.C99097Fig. 18 -- Refrigerant Circuit50EZ-- A