Sanyo THX1852, UHX2452, UHX0752, UHX1252, UHX3652 CR1 for CR-KR254GXH56A/KHX2452 Wall-Mounted

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PCB and Functions

2.Indoor Unit Control PCB

4.CR1 (for CR-KR254GXH56A/KHX2452) (Wall-Mounted)

If the fuse (F002) has blown, determine the cause and correct it.

Then change the socket from the OC plug to the EMG plug.

Control circuit fuse (F002)

CHK (test) pin

DISP pin

TRANS-S plug

EMG plug

OC plug

RC plug

FAN DRIVE plug

OPTION plug

Microcomputer

T10 plug

JP001

Nonvolatile memory IC

Indoor heat exchanger

(E2) sensor

Power LED (LD002)

EXCT plug

	Indoor heat exchanger	Room temperature
	(E1) sensor
		(TA) sensor

4-9

Image 95

Contents Outdooe Units „ R410A Models Indoor UnitsPage Check of Density Limit Contents Test RUN ContentsPreparing for Test Run Test RunItems to Check Before the Test Run Test Run ProcedureMain Outdoor Unit PCB Setting Setting of Unit Control PCBUnit No. setting Indoor unit setting S004 Rotary switch, redSystem address S003 System address No P DIP switch, blue 10 No. of outdoor units Outdoor unit setting S006Automatic Address Setting from the Outdoor Unit Auto Address SettingAuto Address Setting Basic wiring diagram Example Circuit 22-9Refrigerant Units Case 2 Automatic Address Setting no compressor operationAutomatic Address Setting from Outdoor Unit On the NoCase 3A Automatic Address Setting in Heating Mode Case 3B Automatic Address Setting in Cooling Mode Automatic Address Setting* from the Remote ControllerOn outdoor main unit PCB Display during automatic address settingRemote controller display Use the remote controller to check the indoor unit address Auto Address Setting Remote Controller Test Run SettingsIf 1 indoor unit is connected to 1 remote controller Remote Controller Test Run SettingsTest Run Possible cause of malfunction Meaning of Alarm MessagesAlarm contents P02 Alarm messages displayed on system controller Main Operating Functions Wireless Remote ControllerTimer Remote Controller RCS-TM80BG Deg Room Temperature ControlMain Operating Functions Thermostat is turned ON/OFF according to as shown belowAfter the compressor turns on Operating mode change Shifted set tempFAN Speed selector button Wireless Remote ControllerMode button TransmitterC Sensor button Cool mode and Dry mode, if the flaps are set in a downwardFilter button Address buttonOFF Cycle Timer Indicator when swing operation is stoppedTimer SET button OFF TimerReceiver Control Temperature sensors at the indoor unit side are usedOperation Multiple units GroupCover Using the Wireless Remote Control UnitHow to install batteries Address Settings D type TypeControl unit will not be accepted Emergency OperationOperation ShutdownPress the Emergency operation button once more Trouble Possible Cause TroubleshootingTrouble Possible Cause Remedy How to Use the Timer Remote Controller Operating buttons Timer Remote Controller RCS-TM80BGNames and Operations Timer OFF indication Display Section Refer to Setting indicationTimer No. indication Timer programHow to install the Remote Controller Installation Manual for Timer Remote ControllerTo Display the Sensor Temperature Group Control Using 2 Remote ControllersRemote Controller Setting Mode Indoor Unit Setting Mode13/32 Press To change the present hour in the range of 0 to 23 Setting the Present TimeOnce you enter in the setting mode Day and time ﬂ ash Set to today’s day of the weekSelect a Timer number Weekly Program Function Checking Weekly TimerProgram image diagram Press To enter the program conﬁrmation mode Start settingSet the minute. program step Set the hour. program stepIndoor unit starts operation at the programmed time Press / to change the temperature settingSet the program pattern. program step PatternDeleting the Program Timer How to invalidate the program timerHow to cancel the program timer invalidation If Power Failure OccurredBefore Asking Repair Work Duplicating the Program TimerYou can duplicate the preset program by day Select the copy sourceOuting Function Precautions„ For Example Setting at Outing Temperature 86F 30C Room temperatureOuting function indication Status Canceling the outing functionOuting function indication Sleeping Function Wired Remote Controller Test Run Settings Simple Settings Function ProcedureList of Simple Setting Items Detailed Settings Functions Description List of Detailed Setting ItemsSetting data Item code Setting data Description Code Description Setting dataTimer Remote Controller RCS-TM80BG Table of DC Fan Motor Tap Settings ceiling-mounted type TP6 TP3 TP1 Maintained Remote Controller Servicing FunctionsDisplay Sensor Servicing check Alarm history Press and hold Test Run Function Normal remote controller display Trouble Diagnosis Contents of Remote Controller Switch Alarm Display Heat exchanger 1 gas temp. sensor F06 Display meaning Are occurring Automatic address setting is in progressNumber that was set Alarm display OFFAlarm code Alarm meaning 2WAY ECO-i Alarm CodesE15 Alarm Alarm code E06 Alaral rm Alarm codeAlarm E04 occurs E12 Alarm Alarm codeAt a number of indoor units E16 Alarm Alarm codeE20 Alarm Alarm code E24 Alarm Alarm codePower at the outdoor unit main is turned OFF E25 Alarm Alarm codeE26 Alarm Alarm code E29 Alarm Alarm codeOutdoor unit control PCB F04, F05, F22 Alarm Alarm codeCrossed wiring or installation error Check Check for crossed wiring and installation errorsAlarm meaning Identification of the problem in this caseF06, F23 Alarm Alarm code F07, F24 Alarm Alarm codeF08 Alarm code F12F16 Alarm Alarm code F17 Alarm Alarm codeH03 alarm Alarm code F31 Alarm Alarm codeValve must be replaced H06 Alarm Alarm codeOn the degree of the problem Which may damage the compressorH11, H12, H21, H22 Alarm Alarm code H05, H15, H25 Alarm Alarm code H13, H23 Alarm Alarm codeL05 Alarm Alarm code H31 Alarm Alarm codeL04 Alarm Alarm code L18 alarm Alarm code L06 Alarm Alarm codeL10 Alarm Alarm code L17 Alarm Alarm codeP03, P17, P18 Alarm Alarm code P04 Alarm Alarm code Noise in some cases P05 Alarm Alarm codeP16 Alarm Alarm code Primary or secondary currentP29 Alarm Alarm code P22 Alarm Alarm codeP26 Alarm Alarm code Compressor magnet SW seizing detection Blinking inspection display 1 Automatic backupAlarm code Blinking Inspection display Corresponding outdoor unit Alarm meaning Compressor magnet SW seizing detectedAlarm may be caused by the effects of noise. See notes Within that refrigerant tubing system are stoppedPage PCB and Functions Outdoor Unit Control PCB CR-CHDX14053 Outdoor Unit Control PCBFunctions for CR-CHDX14053 Progress will stop the automatic address setting operationOutdoor Unit Control PCB Mode. Static signalSystem only Link wiringSetting the Outdoor Unit address S007 Setting Address JP1 Indoor Unit Control PCBT10 For DC Fan Motor CR-SXRP56B-B For AC Fan Motor CR-UXRP71B-BCR1 for CR-KR74GXH56A/KHX0752~KHX1852 Wall-Mounted CR1 for CR-KR254GXH56A/KHX2452 Wall-Mounted CR2 for POW-KR74GXH56/KHX0752~KHX2452 Wall-Mounted CN017 Signal. Jumper wire cut Static signal continuous signalOr less CN014 OptionSELF-DIAGNOSIS Function Table Trouble Cause and correction Alarm displayAlarm descriptionSelf-Diagnosis Function Table Self-Diagnosis Function TableCause Check items E15 E16 E20DISCH2 Alarm code Alarm meaningService Checker Functions Functions on the ordinary display Outdoor Unit Maintenance Remote ControllerSystem Diagram All units test run Fig Temperature monitorAll units start/stop Fig Cooling/heating change FigItem code Remarks Display functionsItem codes can be changed with Buttons Sample display -4, Fig XX-YY R.CSample Display A, B Outdoor unit Monitoring OperationsDisplay of unit No main unit Indoor unitOutdoor Unit Alarm History Monitor Code Parameter Description SET Data „ Setting modeParameter Description SET Data „ Setting modePage 200706MDC