Sanyo AHX1252, UHX2452 Meaning of Alarm Messages, Alarm contents, Possible cause of malfunction

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Test Run

6. Meaning of Alarm Messages

6. Meaning of Alarm Messages

Table of Self-Diagnostics Functions and Description of Alarm Displays

Alarm messages are indicated by the blinking of LED 1 and 2 (D72, D75) on the outdoor unit PCB. They are also displayed on the wired remote controller.

zViewing the LED 1 and 2 (D72 and D75) alarm displays

LED1

LED2

Alarm contents

 

 

 

 

 

Alarm Display

Alternating

LED 1 blinks M times, then LED 2 blinks N times. The cycle then repeats.

 

 

M = 2: P alarm 3: H alarm 4: E alarm 5: F alarm 6: L alarm

 

 

N = Alarm No.

 

 

Example: LED 1 blinks 2 times, then LED 2 blinks 17 times. The cycle then repeats.

 

 

Alarm is "P17".

( : Blinling) Connect the outdoor maintenance remote controller to the RC socket on the outdoor main unit control PCB (3P, blue),and check the Alarm Messages on the remote controller display.

Possible cause of malfunction

 

 

 

Alarm

 

 

 

Message

 

 

 

 

 

Serial

Remote controller is detecting

Error in receiving serial communication signal.

 

communication

error signal from indoor unit.

(Signal from main indoor unit in case of group control)

<E01>

errors

 

Ex: Auto address is not completed.

 

 

Mis-setting

 

 

 

 

 

 

Error in transmitting serial communication signal.

<E02>

 

 

 

 

 

 

 

 

Indoor unit is detecting error signal from remote controller (and system controller).

<<E03>>

 

 

 

 

 

 

Indoor unit is detecting error

Error in receiving serial communication signal.

 

 

signal from main outdoor unit.

When turning on the power supply, the number of connected indoor units

E04

 

 

does not correspond to the number set. (Except R.C. address is "0.")

 

 

 

Error of the main outddor unit in receiving serial communication signal

<E06>

 

 

from the indoor unit.

 

 

 

 

 

 

Improper setting of indoor unit

Indoor unit address setting is duplicated.

E08

 

or remote controller.

 

 

 

 

 

Remote controller adress connector (RCU. ADR) is duplicated.

<<E09>>

 

 

 

 

(Duplication of main remote controller)

 

 

 

 

 

 

 

 

 

 

 

During auto address setting,

Starting auto address setting is prohibited.

 

 

number of connected units does

This alarm message shows that the auto address connector CN100 is

E12

 

not correspond to number set.

shorted while other RC line is executing auto address operation.

 

 

 

Error in auto address setting. (Number of connected indoor units is less

E15

 

When turning on the power

than the number set.)

 

 

 

 

 

supply, number of connected

Error in auto address setting. (Number of connected indoor units is more

E16

 

units does not correspond to

than the number set.)

 

 

 

 

 

number set.

 

 

 

 

 

No indoor unit is connected during auto address setting.

E20

 

(Except R.C. address is "0.")

 

 

 

 

 

 

 

Main outdoor unit is detecting error signal from sub outdoor unit.

E24

 

 

 

 

 

 

 

 

Error of outdoor unit address setting.

 

E25

 

 

 

 

 

 

 

The number of connected main and sub outdoor units do not correspond

E26

 

 

to the number set at main outdoor unit PCB.

 

 

 

 

 

Error of sub outdoor unit in receiving serial communication signal from

E29

 

 

main outdoor unit.

 

 

 

 

 

 

Indoor unit communication error

Error of main indoor unit in receiving serial communication signal from

E18

 

of group control wiring.

sub indoor units.

 

 

 

 

 

Improper setting.

This alarm message shows when an indoor unit for multiple-useis not

L02

 

 

connected to the outdoor unit.

 

 

 

 

 

 

 

Duplication of main indoor unit address setting in group control.

<L03>

 

 

 

 

 

 

 

Duplication of outdoor R.C. address setting.

L04

 

 

 

 

 

 

 

 

There are 2 or more indoor unit

 

Priority set remote controller

L05

 

 

controllers that have oparation

 

 

 

 

 

 

Non-priority set remote controller

L06

 

 

mode priority in refrigerant circuit.

 

 

 

 

 

 

 

 

Group control wiring is connected to individual control indoor unit.

L07

 

 

Indoor unit address is not set.

 

L08

 

 

 

 

 

 

 

Capacity code of indoor unit is not set.

 

<<L09>>

 

 

 

 

 

 

Capacity code of outdoor unit is not set.

L10

 

 

 

 

 

 

Mis-matched connection of outdoor units that have different kinds of

L17

 

 

refrigerant.

 

 

 

 

 

 

 

4-way valve operation failure

 

L18

 

 

 

 

Activation of

Protective device in indoor unit

Thermal protector in indoor unit fan motor is activated.

<<P01>>

protective

is activated.

 

 

 

 

Improper wiring connections of ceiling panel.

<<P09>>

device

 

 

 

 

 

 

 

 

Float switch is activated.

 

<<P10>>

 

 

 

 

 

 

Operation of protective function of fan inverter.

P12

 

 

O2 sensor (detects low oxygen level) activated.

P14

 

 

1-14

 

 

Continued

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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 Auto Address Setting Basic wiring diagram ExampleAutomatic Address Setting from the Outdoor Unit 22-9 RefrigerantCircuit 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 ModeDisplay during automatic address setting Remote controller displayOn 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 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 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 ControlUsing the Wireless Remote Control Unit How to install batteriesCover Address Settings Type D typeShutdown Emergency OperationOperation Control unit will not be acceptedPress 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 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 FunctionCanceling the outing function Outing function indicationOuting function indication Status Sleeping Function Wired Remote Controller Test Run Settings Procedure Simple Settings FunctionList of Simple Setting Items Detailed Settings Functions List of Detailed Setting Items Setting dataDescription 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 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 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 codeH31 Alarm Alarm code L04 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 casesP22 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 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 PCBLink 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-BCR1 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 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 Outdoor Unit Maintenance Remote Controller System DiagramFunctions Functions on the ordinary display Cooling/heating change Fig Temperature monitorAll units start/stop Fig All units test run FigDisplay functions Item codes can be changed with ButtonsItem 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
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