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AYXP7FR

3 – 13

[8] TROUBLESHOOTING GUIDE

1. Self-Diagnosis Function and Display Mode

To call out the content of the self-diagnosis memory, hold down the emergency operation button for more than 5 seconds when the indoor unit is not
operating.

The number of indications displayed by the LEDs on the outdoor unit differs from that for the 2001 cooling unit models (for detailed display of mal-
function information).

The display of malfunction No. differs from that of the 2001 cooling unit models. To show detailed malfunction information, two types of numbers
flash alternately. (example: "21" 

←→

 "-0")

1) The content of the self-diagnosis memory can be called out and displayed on the seven-segment display section on the indoor unit. (The error

data cannot be called out for display by the LED on the outdoor unit.)

2) If the power cord is unplugged from the AC outlet or the circuit breaker is turned off, the self-diagnosis memory loses the stored data.

a) The self-diagnosis display function of the indoor unit indicates the content of diagnosis by showing the error main category (number) and the

error sub-category (-number) alternately in 1-second intervals on the seven-segment display section of the indoor unit.

Example of self-diagnosis display on indoor unit: Compressor high-temperature error

b) The self-diagnosis display function of the outdoor unit indicates the error information by flashing LED1 on the outdoor unit according to the con-

tent of self-diagnosis.

The self-diagnosis display function of the outdoor unit is active only for about 3 to 10 minutes after self-diagnosis is performed during operation,
and the display returns to normal condition after this display period.

The content of self-diagnosis cannot be called out by the self-diagnosis display function of the outdoor unit.

Example of self-diagnosis display on outdoor unit: Compressor high-temperature error

c) The content of diagnosis is transferred to the indoor unit via serial communication, but it does not trigger a complete shutdown operation.

: Flashes in 2-sec intervals (normal), 

: On, 

: Off, 

: Flashes 3 times in 0.2-sec intervals (When LED1 on the outdoor unit flashes in 2-sec

intervals, the outdoor unit is in normal condition.)

Status of 

indoor/

outdoor 

units

Indication 

by LED1 

on out-

door unit 

*2

Malfunction 

No. dis-

played on 

main unit 

display sec-

tion *1

Content of diagnosis

Inspection location/method

Remedy

Main 
cate-

gory

Sub-

cate-

gory

Main category

Sub-category

Indoor/
outdoor 
units in 
operation

Nor-

mal

flash-

ing

0

0

Normal

Indoor/
outdoor 
units in 
complete 
shutdown

1 time

1

-0

Outdoor unit 
thermistor 
short-circuit

Heat exchanger 
thermistor short-cir-
cuit error

(1)

Measure resistance of the 
outdoor unit thermistors.
(TH2 to TH5: Approx. 4.4 
k

Ω

 at 25

°

C)

(1)

Replace the outdoor 
unit thermistor assem-
bly.

-1

Outside tempera-
ture thermistor 
short-circuit error

(2)

Check the lead wire of the 
outdoor unit thermistor for 
torn sheath and short-cir-
cuit.

(2)

Replace the outdoor 
unit thermistor assem-
bly.

-2

Suction thermistor 
short-circuit error

(3)

No abnormality found in 
above inspections (1) and 
(2).

(3)

Replace the outdoor 
unit control PWB 
assembly.

-3

2-way valve ther-
mistor short-circuit 
error

'TTQTOCKPECVGIQT[

'TTQTUWDECVGIQT[

1 sec 1 sec

1 sec

1 sec

1 sec

1 sec

0.6 sec

0.6 sec

0.6 sec

0.6 sec 1 sec

ON
OFF

1 sec 1 sec

Summary of Contents for AY-XP12FR

Page 1: ...CONDITION 4 1 3 TEMPERATURE AT EACH PART AND PRESSURE IN 3 WAY VALVE 4 1 4 PERFORMANCE CURVES 4 2 CHAPTER 5 DISASSEMBLING PROCEDURE 1 DISASSEMBLY OF INDOOR UNIT 5 1 2 DISASSEMBLY OF OUTDOOR UNIT 5 7 REPLACEMENT PARTS LIST SERVICE MANUAL AYXP7FR S6512AYXP7FR T SHARP CORPORATION CONTENTS Parts marked with are important for maintaining the safety of the set Be sure to replace these parts with specifi...

Page 2: ...70cc VG74 Refrigerant system Evaporator Louver Fin and Grooved tube type Condenser Corrugate Fin and Grooved tube type Control Expansion valve Refrigerant R410A 830g De lce system Micro computer controled reversed systems Noise level at cooling High dB A 37 45 Low dB A Soft dB A 28 Fan system Drive Direct drive Air flow quantity at cooling High m3 min 8 0 23 2 Low m3 min 6 8 Soft m3 min 5 5 Fan Cr...

Page 3: ...aporator Louver Fin and Grooved tube type Condenser Corrugate Fin and Grooved tube type Control Expansion valve Refrigerant R410A 830g De lce system Micro computer controled reversed systems Noise level at cooling High dB A 39 45 Low dB A Soft dB A 28 Fan system Drive Direct drive Air flow quantity at cooling High m3 min 8 6 23 3 Low m3 min 7 3 Soft m3 min 5 5 Fan Cross flow fan Propeller fan Conn...

Page 4: ...c RB68A or Freol Alpha 68M Refrigerant system Evaporator Louver Fin and Grooved tube type Condenser Corrugate Fin and Grooved tube type Control Expansion valve Refrigerant R410A 1030g De lce system Micro computer controled reversed systems Noise level at cooling High dB A 40 48 Low dB A Soft dB A 28 Fan system Drive Direct drive Air flow quantity at cooling High m3 min 9 8 26 7 Low m3 min 8 5 Soft...

Page 5: ...AYXP7FR 1 4 2 EXTERNAL DIMENSION 1 Indoor unit 2 Outdoor unit 278 198 790 22 0 58 18 5 175 INVERTER AIR CONDITIONER 250 165 167 5 136 81 730 72 540 299 324 515 12 37 5 4 5 58 135 14 ...

Page 6: ...AYXP7FR 1 5 3 WIRING DIAGRM 1 Indooa unit 2 Outdooa unit 2 1 AE X7FR AE X9FR 2 2 AE X12FR 420V 750μF 420V 750μF ...

Page 7: ...to 10 minutes after self diagnosis is performed during operation and the display returns to normal condition after this display period The content of self diagnosis cannot be called out by the self diagnosis display function of the outdoor unit Example of self diagnosis display on outdoor unit Compressor high temperature error c The content of diagnosis is transferred to the indoor unit via serial...

Page 8: ...ion 4 Temporary stop due to 2 way valve freeze 3 Temporary stop for cycle pro tection Indoor unit in operation Outdoor unit in tempo rary stop 3 times 3 0 Dry operation Temporary stop due to dehumidifying operation 3 Temporary stop for cycle pro tection Indoor outdoor units in complete shutdown 5 times 5 0 Outdoor unit thermistor open circuit Heat exchanger thermistor open cir cuit error 1 Check c...

Page 9: ... unit fan motor 3 AC current defi ciency error 1 Check if there is an open circuit in the secondary winding of the current transformer of the outdoor unit control PWB 1 Replace the outdoor unit control PWB assembly 2 Check if the refrigerant volume is abnormally low 2 Charge the specified amount of refrigerant 3 Check if the refrigerant flows properly 3 Correct refrigerant clogs 2 way valve 3 way ...

Page 10: ...er supply 2 No abnormality found in above inspection 1 2 Replace the outdoor unit control PWB assembly Indoor outdoor units in operation 1 PAM clock error 1 Check the PAM clock for proper input 1 Replace the outdoor unit control PWB assembly Indoor unit in operation Outdoor unit in complete shutdown 17 0 Wires between units Serial open circuit 1 Check the wires between units 1 Connect stable power...

Page 11: ... control PWB Indoor outdoor units in operation 20 0 Indoor unit con trol PCB EEPROM data error EEPROM read data error Replace the indoor unit control PWB Indoor outdoor units in operation 88 Control and dis play PCB Communication error 1 Check for disconnected connector between control PCB and display PCB and open circuit in lead wires 1 Insert connectors cor rectly or replace con trol PWB 2 Check...

Page 12: ...alfunction code is called out 3 Indoor unit relay Malfunction diagnosis display Relays turns Off after about 30 minutes None Displays 18 0 when malfunction code is called out 4 Indoor unit relay Malfunction diagnosis display Turns On momentarily then turns Off 18 1 5 Indoor unit relay Malfunction diagnosis display Turns On momentarily then turns Off 18 1 Indoor unit Outdoor unit 1 N 2 1 N 2 Indoor...

Page 13: ...ng 1 2 At Heating 2 AY XP9FR 2 1 At Cooling 2 2 At Heating 25 30 35 40 2 0 2 2 2 4 2 6 300 400 500 600 Cooling capacity kW Outside air temp ºC Input W 5 0 7 5 10 1 5 2 0 2 5 3 0 500 600 400 Heating capacity kW Outside air temp ºC Input W 25 30 35 40 2 4 2 6 2 8 3 0 3 2 900 600 700 800 Cooling capacity kW Outside air temp ºC Input W 5 0 5 7 10 3 0 2 5 3 5 2 0 700 800 600 Heating capacity kW Outside...

Page 14: ...1 At Cooling 3 2 At Heating 25 30 35 40 3 2 3 4 3 6 3 8 4 0 1200 900 1000 1100 Cooling capacity kW Outside air temp ºC Input W 5 0 5 7 10 3 5 4 0 4 5 3 0 2 5 1000 1100 1200 900 800 Heating capacity kW Outside air temp ºC Input W ...

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