Carrier 50ZHC Owner's Information Manual

Also see for 50ZHC: Installation instructions

50ZHC: Owner’s Information ManualManufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.5Table 2 – Maintenance ChecklistMonthly maintenance items and outdoor unit rinsing may be performed by the consumer. All other maintenance items and all service work must beperformed by a qualified service technician. Read all Warning labels.Description of Maintenance Recommended IntervalConsumer specific: Monthly AnnualInspect, clean, or replace air filter if filter is located indoors in return air duct. XClear away debris and vegetation near unit. XDealer specific:Inspect cabinet and basepan for damage. Replace panels, gaskets, and other components that are damaged or severelyrusted. Make sure precipitation has not entered indoor section of unit. XInspect electrical disconnect for proper function. Repair or replace as necessary. XInspect electrical wiring and connections. Tighten loose connections. Inspect and perform functional test of equipment asneeded to ensure proper function. Repair or replace damaged or overheated components and wiring. XInspect electric heater, if installed. Check for signs of overheating of elements, controls, and wiring. Make sure heaterelements are not broken or electically shorted. XCheck refrigerant system subcooling and/or superheat (system dependent). XInspect inside of unit. Clean if debris is present. XInspect condenser coil. Clean if dust, dirt, or debris is present. Rinse unit with fresh water (see Note 2). XInspect condenser motor and fan for damage. Make sure fan spins freely. XInspect and clean blower assembly (includes blower housing, wheel, and motor). XInspect evaporator coil. Clean if dust, dirt, or debris is present (see Note 2). XClean condensate pan and drain lines (more frequent maintenance may be required in humid climates). XInspect airflow system (ductwork). Check for leaks and repair as needed. XNotes:1. The above list may not include all maintenance items. Inspection intervals may vary depending on climate and operating hours. Consult your HVAC dealer about a servicecontract for seasonal inspections.2. Do not use harsh chemicals or high pressure water on coils. More frequent rinsing is required for units near a sea coast.

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