innovair BIN312C2V32 Troubleshooting Manual Download Page 13 | Manualshive

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10.4.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E5)

Error Code

E5

Malfunction decision

conditions

If the sampling voltage is lower than 0.06V or higher than 4.94V,

the LED will display the failure.

Supposed causes

●

Wiring mistake

●

Sensor faulty

●

PCB faulty

Trouble shooting:

Check the connections
between temperature
sensor and main PCB.
Are the connections
good?

Correct the connections.

No

Yes

Yes

Replace indoor or

outdoor main PCB.

Replace the sensor and
check if the problem happen
again?

Check the resistance value
of the sensor via
table1(p64)and table
2(p65), is it normal?

No

©2015 Innovair Corporation. All Rights Reserved.

www.innovair.com

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Summary of Contents for BIN312C2V32

Page 1: ...BIO INVERTER TROUBLESHOOTING GUIDE BIN312C2V32 BIN414C2V32 BIN520C2V32 BIN625C2V32 INVERTER MINI SPLIT SYSTEM 2015 Innovair Corporation All Rights Reserved www innovair com ...

Page 2: ...e sensor T2 open circuit or short circuit 7 times X EC Refrigerant leakage detection 2 times O F1 Outdoor temperature sensor T4 open circuit or short circuit 3 times O F2 Condenser coil temperature sensor T3 open circuit or short circuit 4 times O F3 Compressor discharge temperature sensor T5 open circuit or short circuit 5 times O F4 Outdoor unit EEPROM parameter error 1 times P0 IPM malfunction ...

Page 3: ... the outdoor PCB which is blue color After power on it will be slow flash 0 2Hz when the unit is in standby and quick flash 2 5Hz if the unit has some problems it will be solid light when the unit is running 2015 Innovair Corporation All Rights Reserved www innovair com ...

Page 4: ...ay LED 2 is a yellow light After power on it will be slow flash 0 2Hz when the unit is in standby and quick flash 2 5Hz if the unit has some problems LED 4 green and LED3 red are two lights controlled by the compressor drive chip Below are meanings for those lights LED3 red LED4 green LED2 yellow LED1 red 2015 Innovair Corporation All Rights Reserved www innovair com ...

Page 5: ...o low voltage protection O P1 6 Inverter compressor drive error X P4 7 Inverter compressor drive error O P4 8 Inverter compressor drive error P4 O light X off 2 5Hz flash BIN625C2V32 O There s a LED light on the outdoor PCB which is blue color After power on it will be slow flash 0 2Hz when the unit is in standby and quick flash 2 5Hz if the unit has some problems 2015 Innovair Corporation All Rig...

Page 6: ...e check whether the EEPROM chip plugged in main PCB well Yes No Yes Correct the connection Replace the main PCB Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage For the location of EEPROM chip please refer to the below photos Indoor PCB Outdoor PCB Note The t...

Page 7: ...rn on the unit 5 seconds later reconnect the power wire Is the error still displaying after several minutes No Replace the outdoor main PCB Power on Is the error extinguished Check all the wiring with indoor units Is the wiring to the indoor main PCB connected correctly Replace the indoor main PCB Yes Replace the outdoor main PCB No Check all the wiring with outdoor u n i t s Is the wiring to the ...

Page 8: ... to 50V If the outdoor unit has malfunction the voltage will move alternately with positive value While if the indoor unit has malfunction the voltage will be a certain value Remark Use a multimeter to test the resistance of the reactor which does not connect with capacitor The normal value should be around zero ohm Otherwise the reactor must have malfunction and need to be replaced 2015 Innovair ...

Page 9: ... minutes or the zero crossing signal time interval is abnormal Supposed causes Connection mistake PCB faulty Trouble shooting Check if the connections and power supply is normal Correct the connections Turn on the unit when the power supply is good No Yes Indoor main PCB is defective Replace indoor main PCB 2015 Innovair Corporation All Rights Reserved www innovair com ...

Page 10: ...t off the power supply rotate the fan by hand Does it rotate properly The unit operates normally Find out the cause and have it solved For example check whether the fan is blocked or the bearing is broken Check the wires of fan motor Are all the connections good No Yes No Correct the connections No Yes Check whether the main PCB is normal through index 2 Yes Yes Check whether the fan motor is norm...

Page 11: ...pply or 50V 115V power supply the PCB must have problems and need to be replaced 2 Outdoor DC Fan Motor control chip is in outdoor PCB NO 1 2 3 4 5 Color Orange Grey White Pink Black Signal Hu Hv Hw Vcc GND Color Red Blue Yellow Signal W V U 1 Release the UVW connector Measure the resistance of U V U W V W If the resistance is not equal to each other the fan motor must has problems and need to be ...

Page 12: ...3 Rotate the fan by hand measure the voltage of pin1 5 pin 2 5 and pin 3 5 in feedback signal connector If any voltage is not positive voltage fluctuation the fan motor must has problems and need to be replaced 2015 Innovair Corporation All Rights Reserved www innovair com ...

Page 13: ...posed causes Wiring mistake Sensor faulty PCB faulty Trouble shooting Check the connections between temperature sensor and main PCB Are the connections good Correct the connections No Yes Yes Replace indoor or outdoor main PCB Replace the sensor and check if the problem happen again Check the resistance value of the sensor via table1 p64 and table 2 p65 is it normal No 2015 Innovair Corporation Al...

Page 14: ...such as leakage or blocking Trouble shooting Is there cool air blowing out from indoor air outlet Yes Yes Check if T2 sensor is well fixed Correct the installation or replace T2 sensor Does the problem remain again No Is there any leakage Especially the connection parts such as the gas valve and the liquid valve No Shut off the power supply and turn it on 5 seconds later Is it still displaying the...

Page 15: ...replace the wires and connectors Yes No IPM continuity check Check if the IPM terminal resistance values are uniform Refer to page 64 Replace the IPM board or replace the main PCB if the IPM board and main PCB are integrated together No Check if the outdoor fan runs properly or the outdoor unit ventilation is good Yes No please refer to the below remark check whether the resistance of the fan moto...

Page 16: ...P U P V 2015 Innovair Corporation All Rights Reserved www innovair com ...

Page 17: ...P W P N 2015 Innovair Corporation All Rights Reserved www innovair com ...

Page 18: ...to restart the unit when power supply gets normal No Yes No Correct the connections or replace the wires Yes Power on and when the unit is in standby check if the voltage between P and N is around DC 310V or 340V or 380V For different kinds of units the voltage differs Consult with technical engineer to get definite value Then start up the unit measure the voltage between P and N Is it in 220V 400...

Page 19: ...ndoor and outdoor units Yes No Yes Yes Turn off the power supply and turn it on 10 minutes later Check if the unit can start normally No Check if the refrigerant charge volume is normal Recharge the correct refrigerant volume Refrigerant system is blocked such as capillary or welded point of pipes Yes Check if all the connection especially the connection of OLP Over Load Protector sensor is good C...

Page 20: ...nnectors Yes No IPM continuity check Check if the IPM terminal resistance values are uniform Refer to page 64 Replace the IPM board or replace the main PCB if the IPM board and main PCB are integrated together No Check if the outdoor fan runs properly or the outdoor unit ventilation is good Yes No please refer to the below remark check whether the resistance of the fan motor is normal If not repla...

Page 21: ...value with a tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp T5 sensor Measure the resistance value of each winding by using the multi meter 2015 Innovair Corporation All Rights Reserved www innovair com ...

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