Sanyo UHX1852, UHX2452, UHX0752 E25 Alarm Alarm code, E26 Alarm Alarm code, E29 Alarm Alarm code

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Trouble Diagnosis

3. W-2WAY ECO-i Alarm Codes

E25 Alarm

Alarm code	E25

Alarm meaning	Outdoor unit address setting failure (duplication)
Alarm conditions	Communication by the outdoor unit main/sub control wiring was received that contained the
	same address as that unit 5 times or more within 3 minutes.
Probable cause	The unit number is set incorrectly.

Check	Check the unit number again.
Correction	Correct the incorrect unit number setting.

Example	—

Notes	Recovery from this alarm occurs automatically (when communication that contains the same
	address is not received for 3 minutes).

E26 Alarm

Alarm code	E26

Alarm meaning	Mismatch in outdoor unit quantity
Alarm conditions	After power initialization, the set outdoor unit quantity did not match the number of outdoor units
	detected on the outdoor unit main/sub control wiring for 3 minutes or longer.
Probable cause	(1)	The outdoor unit quantity is set incorrectly.
	(2)	The outdoor unit main/sub control wiring is cut.
Check	(1)	Check the outdoor unit quantity setting again.
	(2)	Check the outdoor unit main/sub control wiring.
Correction	(1)	Correct the incorrect outdoor unit quantity setting.
	(2)	Repair the outdoor unit main/sub control wiring.
Example	—
Notes	Recovery from this alarm occurs automatically (when the set outdoor unit quantity matches the
	number of outdoor units detected on the outdoor unit main/sub control wiring).
E29 Alarm

Alarm code	E29

Alarm meaning	Outdoor unit (sub) failed to receive signal from outdoor unit (main).
Alarm conditions	Outdoor unit (sub) communications from outdoor unit (main) were interrupted for 3 minutes or longer.
Probable cause	(1)	After initial communications were completed, the outdoor unit main-sub control wiring was
		cut.
	(2)	After initial communications were completed, the RC connector (CN006) became disconnected.
	(3) The power at the outdoor unit (main) is turned OFF.
Check	(1)	Check the outdoor unit main/sub control wiring.
	(2)	Check the RC connectors.
	(3)	Check the power at the outdoor unit (main/sub).
Correction	(1) Repair the outdoor unit main/sub control wiring.

(2)Correct the RC connector connection.

(3)Turn ON the outdoor unit (main/sub) power.

Example—

Notes—

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Contents „ R410A Models Indoor Units Outdooe UnitsPage Check of Density Limit Contents Contents Test RUNTest Run Preparing for Test RunTest Run Procedure Items to Check Before the Test RunSetting of Unit Control PCB Main Outdoor Unit PCB SettingNo. of outdoor units Outdoor unit setting S006 Indoor unit setting S004 Rotary switch, redSystem address S003 System address No P DIP switch, blue 10 Unit No. settingAuto Address Setting Basic wiring diagram Example Auto Address SettingAutomatic Address Setting from the Outdoor Unit Refrigerant 22-9Circuit On the No Case 2 Automatic Address Setting no compressor operationAutomatic Address Setting from Outdoor Unit UnitsCase 3A Automatic Address Setting in Heating Mode Automatic Address Setting* from the Remote Controller Case 3B Automatic Address Setting in Cooling ModeRemote controller display Display during automatic address settingOn outdoor main unit PCB Remote Controller Test Run Settings Auto Address Setting Remote Controller Test Run SettingsIf 1 indoor unit is connected to 1 remote controller Use the remote controller to check the indoor unit addressTest Run Alarm contents Meaning of Alarm MessagesPossible cause of malfunction P02 Alarm messages displayed on system controller Timer Remote Controller RCS-TM80BG Wireless Remote ControllerMain Operating Functions Thermostat is turned ON/OFF according to as shown below Room Temperature ControlMain Operating Functions DegOperating mode change Shifted set temp After the compressor turns onTransmitter Wireless Remote ControllerMode button FAN Speed selector buttonAddress button Cool mode and Dry mode, if the flaps are set in a downwardFilter button C Sensor buttonOFF Timer Indicator when swing operation is stoppedTimer SET button OFF Cycle TimerReceiver Multiple units Group Temperature sensors at the indoor unit side are usedOperation ControlHow to install batteries Using the Wireless Remote Control UnitCover Address Settings Type D typeShutdown Emergency OperationOperation Control unit will not be acceptedPress the Emergency operation button once more Trouble Possible Cause Remedy TroubleshootingTrouble Possible Cause Timer Remote Controller RCS-TM80BG How to Use the Timer Remote Controller Operating buttonsNames and Operations Timer program Display Section Refer to Setting indicationTimer No. indication Timer OFF indicationInstallation Manual for Timer Remote Controller How to install the Remote ControllerIndoor Unit Setting Mode Group Control Using 2 Remote ControllersRemote Controller Setting Mode To Display the Sensor Temperature13/32 Set to today’s day of the week Setting the Present TimeOnce you enter in the setting mode Day and time ﬂ ash Press To change the present hour in the range of 0 to 23Press To enter the program conﬁrmation mode Start setting Weekly Program Function Checking Weekly TimerProgram image diagram Select a Timer numberSet the hour. program step Set the minute. program stepPattern Press / to change the temperature settingSet the program pattern. program step Indoor unit starts operation at the programmed timeIf Power Failure Occurred How to invalidate the program timerHow to cancel the program timer invalidation Deleting the Program TimerSelect the copy source Duplicating the Program TimerYou can duplicate the preset program by day Before Asking Repair WorkRoom temperature Precautions„ For Example Setting at Outing Temperature 86F 30C Outing FunctionOuting function indication Canceling the outing functionOuting function indication Status Sleeping Function Wired Remote Controller Test Run Settings Procedure Simple Settings FunctionList of Simple Setting Items Detailed Settings Functions Setting data List of Detailed Setting ItemsDescription Item code Setting data Description Setting data Code DescriptionTimer Remote Controller RCS-TM80BG Table of DC Fan Motor Tap Settings ceiling-mounted type TP6 TP3 TP1 Display Sensor Servicing check Alarm history Press and hold Remote Controller Servicing FunctionsMaintained Test Run Function Normal remote controller display Trouble Diagnosis Contents of Remote Controller Switch Alarm Display Heat exchanger 1 gas temp. sensor F06 OFF Are occurring Automatic address setting is in progressNumber that was set Alarm display Display meaning2WAY ECO-i Alarm Codes Alarm code Alarm meaningE12 Alarm Alarm code E06 Alaral rm Alarm codeAlarm E04 occurs E15 Alarm Alarm codeE24 Alarm Alarm code E16 Alarm Alarm codeE20 Alarm Alarm code At a number of indoor unitsE29 Alarm Alarm code E25 Alarm Alarm codeE26 Alarm Alarm code Power at the outdoor unit main is turned OFFCheck Check for crossed wiring and installation errors F04, F05, F22 Alarm Alarm codeCrossed wiring or installation error Outdoor unit control PCBF07, F24 Alarm Alarm code Identification of the problem in this caseF06, F23 Alarm Alarm code Alarm meaningF17 Alarm Alarm code Alarm code F12F16 Alarm Alarm code F08F31 Alarm Alarm code H03 alarm Alarm codeWhich may damage the compressor H06 Alarm Alarm codeOn the degree of the problem Valve must be replacedH11, H12, H21, H22 Alarm Alarm code H13, H23 Alarm Alarm code H05, H15, H25 Alarm Alarm codeL04 Alarm Alarm code H31 Alarm Alarm codeL05 Alarm Alarm code L17 Alarm Alarm code L06 Alarm Alarm codeL10 Alarm Alarm code L18 alarm Alarm codeP03, P17, P18 Alarm Alarm code P04 Alarm Alarm code Primary or secondary current P05 Alarm Alarm codeP16 Alarm Alarm code Noise in some casesP26 Alarm Alarm code P22 Alarm Alarm codeP29 Alarm Alarm code Alarm code Blinking Inspection display Blinking inspection display 1 Automatic backupCompressor magnet SW seizing detection Within that refrigerant tubing system are stopped Alarm meaning Compressor magnet SW seizing detectedAlarm may be caused by the effects of noise. See notes Corresponding outdoor unitPage PCB and Functions Outdoor Unit Control PCB Outdoor Unit Control PCB CR-CHDX14053Progress will stop the automatic address setting operation Functions for CR-CHDX14053Mode. Static signal Outdoor Unit Control PCBSetting the Outdoor Unit address S007 Setting Address Link wiringSystem only T10 Indoor Unit Control PCBJP1 For AC Fan Motor CR-UXRP71B-B For DC Fan Motor CR-SXRP56B-BCR1 for CR-KR74GXH56A/KHX0752~KHX1852 Wall-Mounted CR1 for CR-KR254GXH56A/KHX2452 Wall-Mounted CR2 for POW-KR74GXH56/KHX0752~KHX2452 Wall-Mounted Or less Signal. Jumper wire cut Static signal continuous signalCN017 Option CN014SELF-DIAGNOSIS Function Table Self-Diagnosis Function Table Alarm displayAlarm descriptionSelf-Diagnosis Function Table Trouble Cause and correctionCheck items E15 E16 E20 CauseAlarm code Alarm meaning DISCH2Service Checker System Diagram Outdoor Unit Maintenance Remote ControllerFunctions Functions on the ordinary display Cooling/heating change Fig Temperature monitorAll units start/stop Fig All units test run FigItem codes can be changed with Buttons Display functionsItem code Remarks XX-YY R.C Sample display -4, FigSample Display A, B Indoor unit Monitoring OperationsDisplay of unit No main unit Outdoor unitOutdoor Unit Alarm History Monitor „ Setting mode Code Parameter Description SET Data„ Setting mode Parameter Description SET DataPage 200706MDC