Carrier Aquazone 50RHE 006 Installation, Operation And Maintenance Instructions

Contents

26Table 15 - Aquazone D control current LED status and alarm relay operationsDescription Status LED Test LED Fault LED Alarm relay(Green) (Yellow) (Red)Normal mode On Off Flash last fault code in memory OpenNormal mode with PM On Off Flashing code 8 Cycle (closed 5 sec, open 25 sec,...)D control is non-functional Off Off Off OpenTest mode - On Flash last fault code in memory Cycling appropriate codeNight setback Flashing code 2 - Flash last fault code in memory -ESD Flashing code 3 - Flash last fault code in memory -Invalid T-stat inputs Flashing code 4 - Flash last fault code in memory -No fault in memory On Off Flashing code 1 OpenHP fault Slow flash Off Flashing code 2 OpenLP fault Slow flash Off Flashing code 3 OpenFP1 fault Slow flash Off Flashing code 4 OpenFP2 fault Slow flash Off Flashing code 5 OpenCO fault Slow flash Off Flashing code 6 OpenOver/under voltage Slow flash Off Flashing code 7 Open (closed after 15 minutes)HP lockout Fast flash Off Flashing code 2 ClosedLP lockout Fast flash Off Flashing code 3 ClosedFP1 lockout Fast flash Off Flashing code 4 ClosedFP2 lockout Fast flash Off Flashing code 5 ClosedCO lockout Fast flash Off Flashing code 6 ClosedLegendCO - Condensate overflowESD - Emergency shutdownFP - Freeze protectionHP - High pressureLP - Low pressurePM - Performance MonitorNotes:1. If there is no fault in memory, the fault LED will flash code 1.2. Codes will be displayed with a 10-second fault LED pause.3. Slow flash is 1 flash every 2 seconds.4. Fast flash is 2 flashes every 1 second.5. EXAMPLE: “Flashing code 2” is represented by 2 fast flashes followed by a 10-second pause. This sequence will repeat continually until the fault is cleared.9 - SERVICEPerform the procedures outlined below periodically, as indicated.IMPORTANT: When a compressor is removed from this unit,system refrigerant circuit oil will remain in the compressor.To avoid leakage of compressor oil, the refrigerant lines ofthe compressor must be sealed after it is removed.IMPORTANT: All refrigerant discharged from this unit mustbe recovered without exception. Technicians must followindustry-accepted guidelines and all local, state and federalstatutes for the recovery and disposal of refrigerants.IMPORTANT: To avoid the release of refrigerant into theatmosphere, the refrigerant circuit of this unit must only beserviced by technicians which meet local and national profi-ciency requirements.IMPORTANT: To prevent injury or death due to electricalshock or contact with moving parts, open unit disconnectswitch before servicing unit.9.1 - FiltersFilters must be clean for maximum performance. Inspect filtersevery month under normal operating conditions. Replace whennecessary.IMPORTANT: Units should never be operated without a filter.9.2 - Water coilKeep all air out of the water coil. Check open loop systems tobe sure the well head is not allowing air to infiltrate the waterline. Always keep lines airtight.Inspect heat exchangers regularly, and clean more frequently ifthe unit is located in a “dirty” environment. Keep the heatexchanger full of water at all times. Open loop systems shouldhave an inverted P trap placed in the discharge line to keep waterin the heat exchanger during off cycles. Closed loop systemsmust have a minimum of 105 kPa during the summer and 275 kPaduring the winter.Check P trap frequently for proper operation.CAUTION: To avoid fouled machinery and extensive unitclean-up, DO NOT operate units without filters in place. DONOT use equipment as a temporary heat source duringconstruction.9.3 - Condensate drain pansCheck condensate drain pans for algae growth twice a year. Ifalgae growth is apparent, consult a water treatment specialistfor proper chemical treatment. Applying an algaecide everythree months will typically eliminate algae problems in mostlocations.