Carrier WeatherMaster 48HC14 Installation Instructions Manual

43Clearing AlarmsOnce the alarm has been identified and the cause has been re-moved (e.g. replaced faulty sensor) the alarm can be clearedfrom the display.To clear an alarm, perform the following:1. Navigate to the desired alarm.2. Press the (Enter) button. ERASE? displays.3. Press the (Enter) button. ALARM ERASED displays.4. Press the (Menu up/Exit) button to complete theaction and return to the previous menu.NOTE: If the alarm still exists after clearing it, it is redisplayedwithin 5 seconds.Low Ambient Control (Factory Option)If the unit comes with Electro-Mechanical (EM) control, thenno adjustment is necessary.If the unit comes with PremierLink or RTU Open control op-tion, then refer to its installation control manual for details onadjusting “Cooling Lock-Out” setting and configure for thespecific job requirements.Staged Air Volume (SAV™) with Variable Fre-quency Drive (Factory Option)For details on operating 48HC 2 stage cooling units equippedwith the factory-installed Staged Air Volume option, refer tothe Variable Frequency Drive (VFD) Installation, Setup andTroubleshooting Supplement.ComfortLink Controls (Factory Option)For details on operating 48HC units equipped with the factory-in-stalled ComfortLink controls option, refer to the Controls, Start-Up, Operation and Troubleshooting for 48/50HC 04-28 SinglePackage Rooftop Unit with ComfortLink Controls manual. SeeFig. 61-64 for ComfortLink controls and wiring diagrams.Fig. 61 — 48HC14 Control Box Component Locations with ComfortLink ControlsCAUTIONEQUIPMENT DAMAGE HAZARDFailure to follow this caution may result in equipment damage.Be sure to allow enough time for compressor startup andshutdown between checkout tests so that you do not short-cycle the compressors.