Manuals / Sanyo / Household Appliance / Air Conditioner

Sanyo THX1252, UHX2452 Identification of the problem in this case, F06, F23 Alarm Alarm code

Models: DHX4852 XHX1852 KHX2452 KHX0752 XHX2452 THX1852 UHX3652 UHX1852 KHX1252 KHX0952 THX2452 AHX0752 DHX3652 XHX1252 UHX1252 UHX0752 KHX1852 THX1252 UHX2452 AHX1252 AHX0952 XHX3652

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Trouble Diagnosis

3. W-2WAY ECO-i Alarm Codes

(3) Leakage from the discharge tube check valve

Trouble: Although the other compressor is operating and this compressor is stopped, the discharge temperature of this compressor rises together with the temperature of the other compressor.

(4) The ambient temperature around the outdoor unit when it is stopped is 109°F (43°C) or higher.

Correction	(1)	Replace the sensor.
	(2)	Replace the outdoor unit PCB.
	(3)	Repair the refrigerant tubing.
	(4)	Adjust the amount of refrigerant.
	(5)	Correct the trouble.

Example	(1)	Sensor wiring is partially cut.
Notes	This alarm does not indicate that the sensor is disconnected.
	In order to prevent overheating during operation, the outdoor units in this system will not allow a
	compressor to start if the discharge temperature does not decrease while the compressor is
	stopped. If a sensor malfunction results in continuous detection of a high discharge temperature,
	then the compressor may stop for no apparent reason. The purpose of this alarm is to facilitate
	identification of the problem in this case.

F06, F23 Alarm

Alarm code	F06, F23

Alarm meaning	Gas temperature sensor (EXG1) trouble at outdoor heat exchanger 1; Gas temperature sensor
	(EXG2) trouble at outdoor heat exchanger 2
Alarm conditions	(1)	A/D step is 10 steps or less (short circuit).
	(2)	A/D step is 1014 steps or more (open circuit).
Probable cause	(1)	Sensor malfunction (including connector)
	(2)	PCB malfunction
Check	(1)	Measure the sensor resistance. Check that the sensor is operating normally.
	(2)	Use a remote controller monitor or PC monitor to check the temperature that is recognized by
		the microcomputer.
Correction	—
Example	—
Notes	—

F07, F24 Alarm

Alarm code	F07, F24

Alarm meaning	Liquid temperature sensor (EXL1) trouble at outdoor heat exchanger 1; Liquid temperature sensor
	(EXL2) trouble at outdoor heat exchanger 2
Alarm conditions	(1)	A/D step is 10 steps or less (short circuit).
	(2)	A/D step is 1014 steps or more (open circuit).
Probable cause	(1)	Sensor malfunction (including connector)
	(2)	PCB malfunction
Check	(1) Measure the sensor resistance. Check that the sensor is operating normally.
	(2)	Use a remote controller monitor or PC monitor to check the temperature that is recognized by
		the microcomputer.
Correction	—
Example	—
Notes	—

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Sanyo THX1252, UHX2452 Identification of the problem in this case, F06, F23 Alarm Alarm code, F07, F24 Alarm Alarm code

Contents

„ R410A Models Indoor Units Outdooe UnitsPage Check of Density Limit Contents Contents Test RUN Test Run Preparing for Test Run Test Run Procedure Items to Check Before the Test Run Setting of Unit Control PCB Main Outdoor Unit PCB Setting Indoor unit setting S004 Rotary switch, red System address S003 System address No P DIP switch, blue 10No. of outdoor units Outdoor unit setting S006 Unit No. setting Auto Address Setting Auto Address Setting Basic wiring diagram ExampleAutomatic Address Setting from the Outdoor Unit 22-9 RefrigerantCircuit Case 2 Automatic Address Setting no compressor operation Automatic Address Setting from Outdoor UnitOn the No Units Case 3A Automatic Address Setting in Heating Mode Automatic Address Setting* from the Remote Controller Case 3B Automatic Address Setting in Cooling Mode Display during automatic address setting Remote controller displayOn outdoor main unit PCB Auto Address Setting Remote Controller Test Run Settings If 1 indoor unit is connected to 1 remote controllerRemote Controller Test Run Settings Use the remote controller to check the indoor unit address Test Run Meaning of Alarm Messages Alarm contentsPossible cause of malfunction P02 Alarm messages displayed on system controller Wireless Remote Controller Timer Remote Controller RCS-TM80BGMain Operating Functions Room Temperature Control Main Operating FunctionsThermostat is turned ON/OFF according to as shown below Deg Operating mode change Shifted set temp After the compressor turns on Wireless Remote Controller Mode buttonTransmitter FAN Speed selector button Cool mode and Dry mode, if the flaps are set in a downward Filter buttonAddress button C Sensor button Indicator when swing operation is stopped Timer SET buttonOFF Timer OFF Cycle Timer Receiver Temperature sensors at the indoor unit side are used OperationMultiple units Group Control Using the Wireless Remote Control Unit How to install batteriesCover Address Settings Type D type Emergency Operation OperationShutdown Control unit will not be accepted Press the Emergency operation button once more Troubleshooting Trouble Possible Cause RemedyTrouble Possible Cause Timer Remote Controller RCS-TM80BG How to Use the Timer Remote Controller Operating buttons Names and Operations Display Section Refer to Setting indication Timer No. indicationTimer program Timer OFF indication Installation Manual for Timer Remote Controller How to install the Remote Controller Group Control Using 2 Remote Controllers Remote Controller Setting ModeIndoor Unit Setting Mode To Display the Sensor Temperature 13/32 Setting the Present Time Once you enter in the setting mode Day and time ﬂ ashSet to today’s day of the week Press To change the present hour in the range of 0 to 23 Weekly Program Function Checking Weekly Timer Program image diagramPress To enter the program conﬁrmation mode Start setting Select a Timer number Set the hour. program step Set the minute. program step Press / to change the temperature setting Set the program pattern. program stepPattern Indoor unit starts operation at the programmed time How to invalidate the program timer How to cancel the program timer invalidationIf Power Failure Occurred Deleting the Program Timer Duplicating the Program Timer You can duplicate the preset program by daySelect the copy source Before Asking Repair Work Precautions „ For Example Setting at Outing Temperature 86F 30CRoom temperature Outing Function Canceling the outing function Outing function indicationOuting function indication Status Sleeping Function Wired Remote Controller Test Run Settings Procedure Simple Settings Function List of Simple Setting Items Detailed Settings Functions List of Detailed Setting Items Setting dataDescription Item code Setting data Description Setting data Code Description Timer Remote Controller RCS-TM80BG Table of DC Fan Motor Tap Settings ceiling-mounted type TP6 TP3 TP1 Remote Controller Servicing Functions Display Sensor Servicing check Alarm history Press and holdMaintained Test Run Function Normal remote controller display Trouble Diagnosis Contents of Remote Controller Switch Alarm Display Heat exchanger 1 gas temp. sensor F06 Are occurring Automatic address setting is in progress Number that was set Alarm displayOFF Display meaning 2WAY ECO-i Alarm Codes Alarm code Alarm meaning E06 Alaral rm Alarm code Alarm E04 occursE12 Alarm Alarm code E15 Alarm Alarm code E16 Alarm Alarm code E20 Alarm Alarm codeE24 Alarm Alarm code At a number of indoor units E25 Alarm Alarm code E26 Alarm Alarm codeE29 Alarm Alarm code Power at the outdoor unit main is turned OFF F04, F05, F22 Alarm Alarm code Crossed wiring or installation errorCheck Check for crossed wiring and installation errors Outdoor unit control PCB Identification of the problem in this case F06, F23 Alarm Alarm codeF07, F24 Alarm Alarm code Alarm meaning Alarm code F12 F16 Alarm Alarm codeF17 Alarm Alarm code F08 F31 Alarm Alarm code H03 alarm Alarm code H06 Alarm Alarm code On the degree of the problemWhich may damage the compressor Valve must be replaced H11, H12, H21, H22 Alarm Alarm code H13, H23 Alarm Alarm code H05, H15, H25 Alarm Alarm code H31 Alarm Alarm code L04 Alarm Alarm codeL05 Alarm Alarm code L06 Alarm Alarm code L10 Alarm Alarm codeL17 Alarm Alarm code L18 alarm Alarm code P03, P17, P18 Alarm Alarm code P04 Alarm Alarm code P05 Alarm Alarm code P16 Alarm Alarm codePrimary or secondary current Noise in some cases P22 Alarm Alarm code P26 Alarm Alarm codeP29 Alarm Alarm code Blinking inspection display 1 Automatic backup Alarm code Blinking Inspection displayCompressor magnet SW seizing detection Alarm meaning Compressor magnet SW seizing detected Alarm may be caused by the effects of noise. See notesWithin that refrigerant tubing system are stopped Corresponding outdoor unitPage PCB and Functions Outdoor Unit Control PCB Outdoor Unit Control PCB CR-CHDX14053 Progress will stop the automatic address setting operation Functions for CR-CHDX14053 Mode. Static signal Outdoor Unit Control PCB Link wiring Setting the Outdoor Unit address S007 Setting AddressSystem only Indoor Unit Control PCB T10JP1 For AC Fan Motor CR-UXRP71B-B For DC Fan Motor CR-SXRP56B-B CR1 for CR-KR74GXH56A/KHX0752~KHX1852 Wall-Mounted CR1 for CR-KR254GXH56A/KHX2452 Wall-Mounted CR2 for POW-KR74GXH56/KHX0752~KHX2452 Wall-Mounted Signal. Jumper wire cut Static signal continuous signal Or lessCN017 Option CN014 SELF-DIAGNOSIS Function Table Alarm displayAlarm description Self-Diagnosis Function TableSelf-Diagnosis Function Table Trouble Cause and correction Check items E15 E16 E20 Cause Alarm code Alarm meaning DISCH2 Service Checker Outdoor Unit Maintenance Remote Controller System DiagramFunctions Functions on the ordinary display Temperature monitor All units start/stop FigCooling/heating change Fig All units test run Fig Display functions Item codes can be changed with ButtonsItem code Remarks XX-YY R.C Sample display -4, Fig Sample Display A, B Monitoring Operations Display of unit No main unitIndoor unit Outdoor unit Outdoor Unit Alarm History Monitor „ Setting mode Code Parameter Description SET Data „ Setting mode Parameter Description SET DataPage 200706MDC