Carrier HS070-160 User Manual

HEATING & COOLING30HR,HS070-160Flotronic Plus Reciprocating Liquid ChillersControls Troubleshooting GuideAlf Model E Units Have Microprocessor Co

p-JB(Modes) The operating mode codes are dis-played to indicate the operating status of the unit at agiven time. (See Table 7).The modes are explaine

Programming FunctionsSERVICE FUNCTION - The service function allowsthe operator to verify factory configurations and reador change field configuration

TROUBLESHOOTINGIf necessary, review the Flotronic Plus Control System,Control Sequence, and Controls Operation sectionsfound in this book. Tables 5 an

NOTE: The control does not detect circuit breakerfailures. If a circuit breaker trips on the lead compressorin a circuit, a low oil pressure failure

LEAVING WATERSUCTION,----CONNECTION(T58T6)\INLETCOOLER TUBECONNECTIONTHERMISTOR..ENTERING COOLERWATER SENSOR(T21Fig. 4 - Cooler Sensor LocationsBau’

KEYBOARDIDISPLAYENTRY RESPONSEq u3TESTCOMPy$.CAM OFFqENTRCA1 ONICAM OFFq+CA2 OFFEND TESTCOMMENTSFactory field test of compressorssubfunction of test f

THE PROCESSOR OPERATESTHESE CONTACTSFig. 5 - Compressor 24-V Control Circuit Wiring(Simplified)24V FEED 24V NEUTRAL24vFEED1/DSlOTERM ?$I.- STRIP24vNEU

Table 8a - Thermistsr Temperature vs Resistance and Voltage (English)TEMPERATUREVI-25.0-24.0-23.0-22.0-21.0-20.0-19.0-18.0-17.0-16.0-15.0-14.0-

Table 8b - Thermistor Temperature vs Resistance and Voltage (Sk)TEMPERATURE62-39-38-37-36-35-34-33-32-31-30-29-28-27-26-25-24-23-22-21-20-19-la-17-1

Electronic Expansion ValvesCHECKOUT PRCKEDCRE ~ 1-<11low steps below todiagnose and correct EXV problems, For an explanarjonof EXV operation, se

-Features - The 30HR,HS control panel is shown inFig. 1.PROCESSOR MODULE - This module contains theoperating software and controls the operation o

-MUFFLERS MUFFLERS -COMPRESSORS COMPRESSORSFig. 9 - Thermistor LocationsStep 4 - Check Thermistors That Control EXV -Check thermistors that control p

The EXV test can be repeated r-rs required by pressingmay be due to out-of-calibration thcrmistorfs), or inter-mittent connections between processor

Thermistors - All thermistors are identical in theirtemperature vs resistance performance. Resistance atvarious temperatures are listed in Table 8.LOC

ModulesTurn controller power off before servicing thacontrols. This is to ensure safety and prevent damageto the controller.PROCESSOR MODULE (PSIO),

On the sensor bus terminal strips, terminal 1 of thePSI0 module is connected to terminal 1 of each of theother modules; terminals 2 and 3 are connecte

EXV Driver Module (Fig. 16.)Inputs ~ Input on strip 32 am-c discrcre inputs (O?;-OFF).When 24 vat are applied across thy 2 terminals in achannel it i

TROUBLESHOOTINGSYMPTOMS CAUSEI REMEDYSYMPTOMSCompressor doesnot runCAUSE REMEDYUnit operateslong orcontinuouslyPowerline openReset circuit breaker.Con

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.--I-

Each function has one or more subfunctions as shown At initial start-up the valve position is initialized to 0.in Table 2. These functions are defined

Table 3 - ThermistorsCONTROL SEQUENCEThe control power (115-l-60 for 60-Hz units; 230-l-50for 50-Hz units) must be supplied directly from a separate

When the second or lag refrigeration circuit is started,the circuit will go through a lo-second pumpout unlessthe circuit has been operating in the 15

Table 5 - Accessing Functions and SubfunctionsOPERATIONTo access a function, press the subfunction number and thefunction name key. The display will s

Table 6 - Keyboard DirectorySTATUSQUICK TESTKEYBOARD ENTI DISPLAY KEYBOARD ENTRYDISPLAY COMMENTFactory/field test ofinputsLeaving watertemperatureEnt

Table 6 - Keyboard Directory (cant)SERVICE CONFIGURATtONSKEYBOARD ENTRYCOMMENTKEYBOARD ENTRY 1 DtSPLAY iCOMMENTDISPLAYOVRD XSCHTYP XPERIOD 1MON XTUE

Table 7 - Display CodesOPERATING MODESDisplayDescriptionComp Al AlFailureCamp A2 ii:FailureComp BlFailureCompB2 FailureLoss of charge circuit ALoss o