Carrier aquazone 50RTG Installation, Start-up And Service Instructions Manual

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Carrier aquazone 50RTG Installation, Start-up And Service Instructions Manual Manual pdf 20 page image

20Table 19 — C Control Current LED Statusand Alarm Relay OperationsLEGENDNOTES:1. Slow flash is 1 flash every 2 seconds.2. Fast flash is 2 flashes every 1 second.3. EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes followed by a10-second pause. This sequence will repeat continually until the fault iscleared.Table 20 — C Control LED Code andFault DescriptionsLEGENDRetry Mode — In Retry mode, the status LED will start toflash slowly to signal that the control is trying to recover froman input fault. The control will stage off the outputs and try toagain satisfy the thermostat used to terminal Y. Once the ther-mostat input calls are satisfied, the control will continue normaloperation.NOTE: If 3 consecutive faults occur without satisfying thethermostat input call to terminal Y, the control will go intolockout mode. The last fault causing the lockout is stored inmemory and can be viewed by entering Test mode.Aquazone™ Deluxe D Control LED Indica-tors — There are 3 LED indicators on the D Control:STATUS LED — Status LED indicates the current status ormode of the D control. The Status LED light is green.TEST LED — Test LED will be activated any time the Dcontrol is in test mode. The Test LED light is yellow.FAULT LED — Fault LED light is red. The fault LED willalways flash a code representing the last fault in memory. Ifthere is no fault in memory, the fault LED will flash code 1 onand appear as 1 fast flash alternating with a 10-second pause.See Table 21.SERVICEPerform the procedures outlined below periodically, asindicated.Filters — Filters must be clean for maximum performance.Inspect filters every month under normal operating conditions.replace when necessary.Water Coil — Keep all air out of the water coil. Checkopen loop systems to be sure the well head is not allowing airto infiltrate the water line. Always keep lines airtight.Inspect heat exchangers regularly, and clean more frequent-ly if the unit is located in a “dirty” environment. The heatexchanger should be kept full of water at all times. Open loopsystems should have an inverted P trap placed in the dischargeline to keep water in the heat exchanger during off cycles.Closed loop systems must have a minimum of 15 PSI duringthe summer and 40 PSI during the winter.Check P trap frequently for proper operation.LED STATUS DESCRIPTION OF OPERATION ALARM RELAYOnNormal Mode OpenNormal Mode withPM WarningCycle(closed 5 sec.,Open 25 sec.)Off C Control is non-functional OpenSlow Flash Fault Retry OpenFast Flash Lockout ClosedSlow Flash Over/Under Voltage ShutdownOpen(Closed after15 minutes)Flashing Code 1 Test Mode — No fault in memory Cycling Code 1Flashing Code 2 Test Mode — HP Fault in memory Cycling Code 2Flashing Code 3 Test Mode — LP Fault in memory Cycling Code 3Flashing Code 4 Test Mode — FP1 Fault in memory Cycling Code 4Flashing Code 5 Test Mode — FP2 Fault in memory Cycling Code 5Flashing Code 6 Test Mode — CO Fault in memory Cycling Code 6Flashing Code 7 Test Mode — Over/Undershutdown in memory Cycling Code 7Flashing Code 8 Test Mode — PM in memory Cycling Code 8Flashing Code 9 Test Mode — Test Mode — FP1/FP2 Swapped Fault in memory Cycling Code 9CO — Condensate OverflowFP — Freeze ProtectionHP — High PressureLED — Light-Emitting DiodeLP — Low PressurePM — Performance MonitorLEDCODE FAULT DESCRIPTION1 No fault in memory There has been no fault sincethe last power-down to power-upsequence2 High-Pressure Switch HP Open Instantly3 Low-Pressure Switch LP open for 30 continuous sec-onds before or during a call(bypassed for first 60 seconds)4 Freeze Protection Coax— FP1 FP1 below Temp limit for 30 con-tinuous seconds (bypassed forfirst 60 seconds of operation)5 Freeze Protection Air Coil— FP2 FP2 below Temp limit for 30 con-tinuous seconds (bypassed forfirst 60 seconds of operation)6 Condensate overflow Sense overflow (grounded) for30 continuous seconds7(Autoreset)Over/Under VoltageShutdown"R" power supply is <19VAC or>30VAC8 PM Warning Performance Monitor Warninghas occurred.9 FP1 and FP2 Thermistorsare SwappedFP1 temperature is higher thanFP2 in heating/test mode, or FP2temperature is higher than FP1in cooling/test mode.FP — Freeze ProtectionHP — High PressureLED — Light-Emitting DiodeLP — Low PressurePM — Performance MonitorIMPORTANT: When a compressor is removed from thisunit, system refrigerant circuit oil will remain in the com-pressor. To avoid leakage of compressor oil, the refrigerantlines of the compressor must be sealed after it is removed.IMPORTANT: All refrigerant discharged from this unitmust be recovered without exception. Technicians must fol-low industry accepted guidelines and all local, state and fed-eral statutes 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, state and federalproficiency requirements.IMPORTANT: To prevent injury or death due to electricalshock or contact with moving parts, open unit disconnectswitch before servicing unit.IMPORTANT: Units should never be operated with-out a filter.