Carrier AQUAZONE 50RHC Operating And Troubleshooting

Also see for AQUAZONE 50RHC: Installation and service instructions

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Carrier AQUAZONE 50RHC Operating And Troubleshooting Manual pdf 11 page image

CONTROL OPERATIONComplete C Control Indicators -- The status LEDon the Complete C control displays file current status of theComplete C control. If in Test mode, the LED will flash thecode of the last fault and the almm relay will cycle the stonenumber as the fault code. See Table 4.There are 2 categories of fault types: primary and second-ary. Primaly fault types include High Pressure (HI)), LowPressure (LP), Water Coil Freeze Protection (FPI), Air CoilFreeze Protection (FP2), and Condensate Overflow (CO). Iffault type is primary, it is always stored in memory. Primaryfaults override secondary faults. Secondary fimlt types are:Over/Under Voltage Shutdown and Performance Monitor(PM). Secondary faults are retained in memory only if thereare not any primary faults. Secondary faults will not over-write primary fimlts. See Table 5.Table 4 -- Complete C Control Current LED Statusand Alarm Relay OperationsDESCRIPTION OFOPERATIONNormal ModeNormal Mode withPM WarningComplete C Control isnon-functionalFault RetryLockoutOver/Under VoltageShutdownLED STATUSOnOffSlow FlashFast FlashSlow FlashTest Mode --No Fault in Memory Flashing Code 1Test Mode --HP Fault in Memory Flashing Code 2Test Mode --LP Fault in Memory Flashing Code 3Test Mode --FP1 Fault in Memory Flashing Code 4Test Mode --FP2 Fault in Memory Flashing Code 5Teat Mode --CO Fault in Memory Flashing Code 6Teat Mode -- Over/Under Flashing Code 7Shutdown in MemoryTeat Mode -- PM in Memory Flashing Code 8Teat Mode -- FPI/FP2Swapped Fault in Memory Flashing Code 9ALARM RELAYOpenCycle(closed 5 sec,,Open 25 sec.)OpenOpenClosedOpen(Closed after15 minutes)Cycling Code 1Cycling Code 2Cycling Code 3Cycling Code 4Cycling Code 5Cycling Code 6Cycling Code 7Cycling Code 8Cycling Code 9LEGENDCO -- Condensate OverflowFP -- Freeze ProtectionHP -- High PressureLED -- Light-Emitting DiodeLP -- Low PressurePM -- Performance MonitorNOTES: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 fol-lowed by a 10-second pause. This sequence will repeat continuallyuntil the fault is cleared.Table 5 -- Complete C Control LED Code andFault DescriptionsLED FAULT DESCRIPTIONCODE1 No fault in memory There has been no fault sincethe last power-down to power-up sequence2 High-Pressure Switch HP Open Instantly3 Low-Pressure Switch or LP open for 30 continuous sec-LOC onds before or during a call(bypassed for first 120 secondsof operation)4 Freeze Protection Coax FP1 below Temp limit for 30-- FP1 continuous seconds (bypassedfor first 120 seconds ofoperation)5 Freeze Protection Air FP2 below Temp limit for 30Coil -- FP2 continuous seconds (bypassedfor first 120 seconds ofoperation)6 Condensate overflow Sense overflow (grounded) for30 continuous seconds7 Over/Under Voltage "R" power supply is <8 vac or(Autoreset) Shutdown >365 vac8 PM Warning Performance Monitor Warninghas occurred.9 FP1 and FP2 Ther- FP1 temperature is higher thanmistors are in Reverse FP2 in Heating/Test mode, orPositions FP2 temperature is higher thanFP1 in Cooling test mode.LEGENDCO -- Condensate OverflowFP -- Freeze ProtectionHP -- High PressureLED -- Light-Emitting DiodeLOC -- Loss of Charge SwitchPM -- Performance MonitorComplete C and Deluxe D Controls -- The follow-ing operations are common to both Complete C and Deluxe Dcoutrol S.TEST MODE -- Test mode provides the ability to check thecontrol operation in a timely mmmel: The control enters a20-minute Test mode by momentarily shorting the test termi-nals. All time delays are sped up 15 times.To enter Test mode, cycle the power 3 times within 60 sec-onds or monentarily sholt the test terminals. The LED willflash a code representing the last fault when entering the Testmode. Tile alarm relay will also power on and off during Testmode. See Table 3. To exit Test mode, sholl the terminals for 3seconds or cycle file power 3 times within 60 seconds.NOTE: The flashing code and _darm relay cycling code willboth have the same numerical label. For example, flashingcode 1 will have an alarm relay cycling code 1. Code 1 indi-cates the control has not faulted since the last power off topower on sequence.RETRY MODE --In retry mode, the status LED will start toflash slowly (one flash every two seconds) to signal that thecontrol is trying to recover from ml input fault. The control willstage off file outputs mad try to again satisl_ the thermostatused to terminal Y. Once the thermostat input calls are satis-fied, the control will continue normal operation.NOTE: If 3 consecutive faults occur without satisfying thethermostat input c_dl to terminal _ the control will go intolockout mode. Tile last fault causing the lockout is stored inmemory and can be viewed by entering Test mode.If one try is selected for FPI and FP2 then there will be noletries for FPI and FP2 faults.POWER UP MODE -- The unit will not operate until all theinputs, terminals and safety controls me checked for normaloperation.NOTE: The compressor will have a 5 minute anti-sholt cycleupon power up.11