Sanyo CG1411, KGS1411 service manual Failure Display on Outdoor Unit and Correction Method, DC0V

Page 68

12-8. Failure Display on Outdoor Unit and Correction Method

No.

Caused by (outdoor unit)

LED lamps

Meaning

Error Detected

Points to Diagnose

Correction Methods

 

 

2

3

4

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

—

Normal

● ● ● ●

Normal operation

—

—

—

 

 

 

 

 

 

 

—

Defect in IC chip (E 2PROM)

● ● ● ●

Can not read IC chip data or miss-

Gas switching IC (EEP-ROM) data was not

● Confirm proper insertion of gas switching

➀ Replace gas switching IC chip

 

 

 

 

 

 

ing IC chip on outside PCB

read properly by microcomputer upon

IC, then reset power supply

➁ Replace outdoor unit PCB

 

 

 

 

 

 

 

power-on

 

 

 

 

 

 

 

 

 

—

Defective Gas Valves

● ● ● ●

Detect abnormality in Gas Valve

Electricity applied to GV1 / GV2 while gas

● Measure voltage of GV1 (WHT – WHT of I)

➀ Replace outdoor unit PCB

 

 

 

 

 

 

Circuit at initial checking

valve is closed

and GV2 (ORG – ORG of I) (normal value:

 

 

 

 

 

 

 

 

 

DC0V)

 

 

 

 

 

 

 

 

A

Defective Thermistor 1

● ● ● ●

Open or Short of Thermistor 1

Open / short circuit of Thermistor 1

● Measure resistance of Thermistor 1 (BLK –

➀ Check / modify Connector CN 15 (M)

 

 

 

 

 

 

 

 

BLK of M.) (normal value: 6.6±0.5 kΩ at

➁ Replace Thermistor 1

 

 

 

 

 

 

 

 

68°F (20°C))

➂ Replace outdoor unit PCB

 

 

 

 

 

 

 

B

Defective Thermistor 2

● ● ● ●

Open or Short of Thermistor 2

Open / short circuit of Thermistor 2

● Measure resistance of Thermistor 2 (BLK –

➀ Check / modify connector CN 16 (K)

 

 

 

 

 

 

 

 

BLK of K.) (normal value: 6.6±0.5 kΩ at

➁ Replace Thermistor 2

 

 

 

 

 

 

 

 

68°F (20°C))

➂ Replace outdoor unit PCB

 

 

 

 

 

 

 

C

Limit switch

● ● ● ●

Thermal fuse or Bimetal Thermostat

Temperature fuse / temperature limiting

● Check continuity of temperature fuse and

➀ Check / modify connector CN12 (P)

 

 

 

 

 

 

tripped

switch operated

temperature limiting switch (YEL – YEL of

➁ Replace thermal fuse

 

 

 

 

 

 

 

 

P) (normal value: 1Ω or less)

➂ Replace bimetal thermistor

 

 

 

 

 

 

 

D

Flame Current Circuit

● ● ● ●

Abnormality in Flame Current

Flame current detected while combination

● Measure electric current between BLK of

➀ Replace flame sensor probe (CN17)

 

 

 

 

 

 

Circuit

gas valve is closed

flame rod and CN17(J) on the PCB (nor-

➁ Replace outdoor unit PCB

 

 

 

 

 

 

 

 

mal value: 0 µA, combination gas valve

 

 

 

 

 

 

 

 

 

 

 

E

Lighting failure

● ● ● ●

Could not establish flame

Fail to ignite by ignition operation (including

closed)

➀ Check / modify connector CN17 (J)

 

 

 

 

 

 

 

 

retry)

● Measure electric current between BLK of

➁ Check / modify connector CN7 (G)

 

 

 

 

 

 

 

 

flame rod and CN17(J) on the PCB (nor-

➂ Replace ignition electrode

 

 

 

 

 

 

 

 

mal value: 3 µA or more at ignition)

➃ Check / modify insertion of wire on secondary

 

 

 

 

 

 

 

 

● Check positioning of ignition plug, flame

side of ignition transformer

 

 

 

 

 

 

 

 

rod and burner (normal: electric discharge

➄ Replace flame rod

 

 

 

 

 

 

 

 

gap approx. 4mm)

➅ Replace ignition transformer

 

 

 

 

 

 

 

 

● Confirm sparking noise at the igniter

➆ Replace outdoor unit PCB or power transformer

 

 

 

 

 

 

 

F

Lost flame

● ● ● ●

Flame Sensor Circuit detects lost

Extinction after flame detection, and does

 

As above

 

 

 

 

 

 

flame and could not establish the

not re-try (burning after re-try, yet extin-

As above

 

 

 

 

 

 

 

flame

guishes within 4 minutes)

 

 

 

 

 

 

 

 

 

G

Incorrect combustion motor speed

● ● ● ●

Incorrect combustion motor speed

Inadequate revolution speed

 

➀ Check / modify connector CN5 (D)

 

 

 

 

 

 

 

➀ At ignition:

● Check revolution of combustion blower fan

➁ Check / modify connector CN14 (N)

 

 

 

 

 

 

 

Does not reach 500rpm within 20 sec-

● Measure voltage of combustion blower

➂ Replace combustion blower fan motor set

 

 

 

 

 

 

 

onds

motor (PLE – PLE of D) (normal value: AC

➃ Replace outdoor unit PCB

 

 

 

 

 

 

 

Reaches 500rpm within 20 seconds yet

30 – 115 V)

 

 

 

 

 

 

 

 

does not reach prescribed revolutions

 

 

 

 

 

 

 

 

 

(approx. 1,850rpm) within 60 seconds

 

 

 

 

 

 

 

 

 

➁ Less than 500rpm (other than ignition)

 

 

 

 

 

 

 

 

 

H

Over-time period in retry

● ● ● ●

Thermistor 1 or Thermistor 2 tem-

 

 

➀ Repair refrigerant tubes (connections, etc.)

 

 

 

 

 

 

perature did not go down during set

Thermistor 1 and/or Thermistor 2 do not

● Check for refrigerant leaks (pressure in

(leaks)

 

 

 

 

 

 

period

cool down to normal temperature within 10

wide tube while cooling operation: approx.

➁ Charge additional refrigerant (leaks)

 

 

 

 

 

 

 

minutes after being heated up to a speci-

85.0 PSIG (6 kgf/cm2)

➂ Replace units

 

 

 

 

 

 

 

fied temperature (gas is cut off when over-

 

 

 

 

 

 

 

 

 

 

 

 

I

Over number of times in retry

● ● ● ●

Combustion stopped by Thermistor

heating)

 

As above

 

 

 

 

 

 

 

 

1 or Thermistor 2 more than set

Fourth overheating is detected. Retry is

As above

 

 

 

 

 

 

 

number

performed up to 3 times when Thermistor 1

 

 

 

 

 

 

 

 

 

and / or Thermistor 2 cool down to normal

 

 

 

 

 

 

 

 

 

 

 

 

J

Bypass Valve (V2) not open

● ● ● ●

Bypass Valve failure or drop-out of

temperature within 10 minutes

 

➀ Confirm / modify position of Thermistor 2

 

 

 

 

 

 

 

 

Thermistor 2

Thermistor 2 does not detect temperature

● Check position of Thermistor 2.

➁ Confirm / modify connector CN6 (F)

 

 

 

 

 

 

 

increase (approx. xx°F (2°C)) within 30 sec-

● Measure voltage at ON/OFF valve (RV2)

➂ Replace ON/OFF valve 2 (coil)

 

 

 

 

 

 

 

onds after ON/OFF valve (RV2) is ON

(BLK – BLK of F) (normal value: AC 104 –

➃ Replace outdoor unit PCB

 

 

 

 

 

 

 

 

126 V, ON)

➄ Replace units

 

 

 

 

 

 

 

—

Reversing Valve not working

● ● ● ●

Reversing Valve failure, drop-out of

 

 

➀ Repair refrigerant tubes (connections, etc.)

 

 

 

 

 

 

Thermistor 2, or shortage of refrig-

Thermistor 1 fails to detect temperature

● Check for refrigerant leakage

(leaks)

 

 

 

 

 

 

erant

increase (approx. xx°F (1°C)) within 30 sec-

● Check position of Thermistor 1

➁ Charge additional refrigerant (leaks)

 

 

 

 

 

 

 

onds after ON/OFF valve (V1) is open at

● Measure voltage at reversing valve (BLK –

➂ Check / modify position of Thermistor 1

 

 

 

 

 

 

 

ignition operation

BLK of B) (normal value: AC 104 – 126 V,

➃ Check / modify connector CN03 (B)

 

 

 

 

 

 

 

 

ON)

➄ Replace reversing valve (coil)

 

 

 

 

 

 

 

 

 

➅ Replace outdoor unit PCB

 

 

 

 

 

 

 

Note:

Failure display remains even after power reset following repairs. The display is overridden upon operation of compressor when heating operation is carried out for a second time after the repair.

 

64

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Page 67 Page 69
Contents GAS Heater AIR Conditioner When Installing… Case of Improper InstallationWhen Transporting When Connecting Refrigerant TubingTable of Contents Troubleshooting IiiTemperature Indoor Air Intake Temp Outdoor Air Intake Temp Operating RangeSpecifications Unit SpecificationsKGS1411 CG1411Dimensions & Weight Governor Setting PressureSafety Devices BurnerMajor Component Specifications Indoor UnitOutdoor Unit Gas ConnectionCompressor External FinishNozzle Refrigerant HeaterCombination Gas Valve IgniterOther Component Specifications Transformer ATR-1581T2-UThermistor Coil sensor Thermistor Room sensorPower Relay PR Auto Reset Temperature LimitingTransformer TR 4FF4L510034000 Thermistor 1 Discharge pressure PB3M-41EDimensional Data UnitLocation of Service Valves Internal Components PCB aPTC Gas Nozzle Major ComponentsCombination Gas Valve Proportional Control Valve Main Burner Combustion BlowerRefrigerant Heater Refrigerant Flow Diagram Refrigerant Flow DiagramPerformance Charts Cooling CharacteristicsHeating Characteristics Performance DataHeating Air Throw Distance ChartsCooling Cooling Capacity Heating Capacity 100CG1411 Cooling Electrical CharacteristicsElectrical Data Electric Wiring Diagrams Indoor unit KGS1411BM RV1 RV2 GV1 GV2 Printed circuit board POW-CG1411 SD3Installation Instructions Installation Site SelectionHot air Heat source Outdoor unit Obstacle above Recommended Wire Length and Diameter Wiring System DiagramRemote Control Unit Installation Position Mounting on a WallRemovable mounting Non-removable mountingFunction Motion ExplanationHeating CoolingCombustion Safety ControlsCombustion Control Room Temperature Control CoolingFreeze Prevention Cooling Heating Refrigerant Control ThermistorSave Function Reset FunctionCombustion Saving Function Cold Draft Prevention Function During Heating Operation Fan Speed Control During Cooling Operation Automatic fan speedDry Operation Dehumidification Automatic Operation NormalChanging fan speed Automatic During Cooling OperationDry B Zone Freeze PreventionCooling / Dry Cooling Zone Dry a Zone Overload Prevention Heating Operation Flowcharts Cooling, DryOperation starts Operation lamp Procedure for Dismantling the Unit Procedure for Dismantling the Indoor UnitHow to remove grille How to remove PCBsHow to remove electrical component box How to remove drain panHow to detach heat exchanger How to detach fan and fan motorProcedure for Dismantling the Outdoor Unit How to remove the external panelsHow to detach the rear panel How to detach the combustion blowerHow to detach combination valve and gas conduit How to detach combination valveHow to detach gas nozzle How to detach ignition probe and flame sensor electrodeHow to detach burner unit Manifold Pressure Indoor Unit Alarm SignalPoints to Diagnose Checking Electrical Components Components11-3-2 Indoor Unit 11-3-3 Outdoor UnitTroubleshooting Check Before and After TroubleshootingIncorrect Wiring of Inter-unit Wiring Malfunction in Power SupplyAbnormalities in Power Transformer Thermistor Abnormality Indoor Unit Only Protective Circuit of Outdoor Burner Unit OperatedPower Circuit Wiring Error Indoor Fan is DefectiveOutdoor Unit Compressor Motor Overload Relay Has Operated Outdoor Unit Power Supply FailureOutdoor Unit Power Transformer Defective Outdoor Unit Fan Motor Defective Outdoor Unit Fan Does Not WorkOutdoor Unit Compressor Motor Defective Flap Motor Does Not Work Heating Operation Not PossibleLouver Motor Defective Thermistor 1 DefectiveIgnition Failure Safety Device OperatedErroneous Flame Detection Erroneous Flame-Out Condition Reversing Valve Failure Combustion Blower Motor Abnormal Revolution12-6-8. ON/OFF Valve Failure Reset Method When Error Occurs During Heating Operation Failure Display on Outdoor Unit and Correction Method DC0VSpecial Precautions When Servicing the Unit BLK/WHT Connector Attachment for ServicingRefrigerant Recovery Service on Outdoor UnitEvacuation Using Vacuum Pump Refer to Service Valve Construction shown in FigVolume Refrigerant ChargingCharging Gradation Level before ChargingReattaching BLK/WHT Connectors for Operation Appendix For Your Safety Read Before Operation What to do if YOU Smell GASProduct Information ContentsAlert Symbols Features Installation Location Electrical RequirementsSafety Instructions Names of Parts Air intakesAir outlet Outdoor Condensing UnitOFF position does not disconnect the power. Use the main Power switch to turn off power completelyTimer lamp ReceiverSET Temp TEMP. setting buttons Button Timer on buttonTimer OFF button TransmitterHR. Timer button Hour off timerGreen or red Auto Red HeatUsing the Remote Control Unit ACL button CoverUsing the Remote Control Unit Operation with the Remote Control Unit Press the ON/OFF operation buttonOperation with the Remote Control Unit Manual Operation Automatic Cooling and DRY mode Heating mode Manual When difference between Room temperature and setTemperature is Temperature is Over High Below 2 F MediumNight Setback Mode is used for saving energy Fan OnlySetting Temperature Press Hour Time Button Heating ModeSetting Temperature Press Hour Hours Button TimeSpecial Remarks How it works?Heating performance Clicking sound is heard from the air conditionerCancellation procedure Press the Cancel button Using the 12-Hour on and OFF TimerSetting procedure Using the 1-Hour OFF Timer Sweep function Adjusting the Airflow DirectionSetting the airflow manually Casing and Grille Indoor Unit Operation without the Remote Control UnitCare and Cleaning Anti-mold filter How to remove the anti-mold filter How to replace the anti-mold filterAir intake grille Anti-mold filterArm AirFilter Operating Range TroubleshootingTips for Energy Saving For Parts or Service Contact

KGS1411, CG1411 specifications

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