ELECTROLUX – KELVINATOR INVERTER SPLIT SYSTEM Fault codes, blinking codes and repair procedure - Part-1

Models: KSV 26CRE, KSV 35CRE, KSV 70CRE, KSV 26HRE, KSV 35HRE, KSV 53HRE, KSV 62HRE, KSV 70HRE, KSV 80HRE

Diagnostic Display Mode Description
Built into the software for model: KSV26HRE & KSV35HRE are two different diagnostic methods: (Fault Codes & Condition Codes) that can be used to help diagnose various faults.
These two diagnostic types are described here.
Note: Where there is a referral to (Remote Control Access – 3)
* This indicates the need to use the remote controller to view the relevant fault code.
This is achieved by pressing the “Light” button 3 times within three seconds.
Note: Where there is a referral to (Remote Control Access – 5)
* This indicates the need to use the remote controller to initiate a selected “Test State”.
This is achieved by pressing the “Light” button 5 times within three seconds.
Fault codes and Condition codes

Fault Code Descriptions:
Red LED: Outdoor unit, flashing at 1 hertz.
(Frequency Limit)
* This indicates the compressor has reached its maximum setting speed.
E4, Indoor Unit.
Yellow LED, Outdoor flashing 7 times.
(Compressor Discharge High Temperature Protection)
* Check the outdoor coil for airflow obstructions.
* Check the outdoor fan motor for correct operation.

E5, Indoor Unit.
Yellow LED, Outdoor flashing 5 times.
(AC Over-Current Protection)
* Check supply voltage.

E8, Indoor Unit. (Delayed)
Yellow LED, Outdoor flashing 6 times.
(Anti-High Temperature Protection)
* Check the indoor coil for airflow obstructions.
* Check the indoor fan motor for correct operation.

EE, Indoor unit.
Yellow LED, Outdoor flashing 11 times.
(Loading EEPROM malfunction)
* Check if the Program Chip is anchored correctly to the outdoor PCB.
Note: If the Program Chip is correctly anchored, yet “EE” fault still exists, replace the outdoor PCB assembly.

FO, Indoor unit.
Red LED, Outdoor flashing 9 times.
(System Low on Refrigerant)
* Check for correct refrigerant charge.
* Check for refrigerant leakage.

LP, Indoor unit.

Yellow LED, Outdoor flashing 16 times.

(Indoor & Outdoor units don’t match)

* Check if the Indoor & Outdoor units are correctly matched.

Note: If the indoor & outdoor units are from two different model types, the LP fault code will be displayed.

P7, Indoor unit.

(Temperature Sensor Circuit Malfunction)

* Replace outdoor PCB assembly.

P8, Indoor unit.

(Module High Temperature Protection)

* Replace outdoor PCB assembly.

HC, Indoor unit.

Yellow LED, Outdoor flashing 14 times.

(PFC Protection)

* Check supply voltage.

U1, Indoor unit.
(Compressor Phase Circuit Detection)
* Replace outdoor PCB assembly.
U3, Indoor unit.
(Unstable Supply Voltage)
* Check supply voltage.

U5, Indoor unit.
(Outdoor Circuit Malfunction)
* Replace outdoor PCB assembly.
U7, Indoor unit. (4-Way Valve Malfunction)
* Check for 240V-AC at the reversing valve coil.
* Check the connecting wire from the reversing valve coil to the outdoor PCB.
* Check for correct operation of the reversing valve coil assembly.

U9, Indoor unit.
(Zero Crossing Malfunction)
* Replace outdoor PCB assembly.

Condition Code Description

E2, Indoor Unit - (Condition Code) {Remote Control Access - 3}
Yellow LED, Outdoor flashing 3 times.
(Anti-Freeze Protection)
* Check if the filters are blocked on the indoor unit.
* Check the refrigerant charge.
* Check for blockages within the refrigeration system.
* Check the evaporator fan for correct operation.

FH, Indoor Unit - (Condition Code) {Remote Control Access - 3}
Red LED, Outdoor flashing 4 times.
(Anti-Freeze Limit – Frequency Drop)
* Check if the filters are blocked on the indoor unit.
* Check the refrigerant charge.
* Check for blockages within the refrigeration system.
* Check the evaporator fan for correct operation.

F6, Indoor Unit. - (Condition Code) {Remote Control Access - 3}

Red LED, Outdoor flashing 3 times.

(Anti-High Temperature Protection)

* Check the outdoor coil for airflow obstructions.

* Check the outdoor fan motor for correct operation.

H1, Indoor unit.

Yellow LED, Outdoor flashing 2 times.

(Defrosting)

PO, Indoor Unit - (Condition Code) {Remote Control Access - 5}

(Compressor Minimum Frequency - Test State)

* Set remote control: (Cooling mode: 16ºC – Heating mode: 27ºC)

P1, Indoor Unit - (Condition Code) {Remote Control Access - 5}

(Compressor Rated Frequency - Test State)

* Set remote control: (Cooling mode: 18ºC – Heating mode: 29ºC)

P2, Indoor Unit - (Condition Code) {Remote Control Access - 5}

(Compressor Maximum Frequency - Test State)

* Set remote control: (Cooling mode: 19ºC – Heating mode: 30ºC)

P3, Indoor Unit - (Condition Code) {Remote Control Access - 5}

(Compressor Medium Frequency - Test State)

* Set remote control: (Cooling mode: 17ºC – Heating mode: 28ºC)

EU, Indoor unit - (Condition Code)

* Frequency limit/decrease (high temp of module)

F8, Indoor Unit. - (Condition Code)

Red LED, Outdoor flashing once.

(Low Voltage Protection)

* Check supply voltage.

F9, Indoor Unit. - (Condition Code)
Red LED, Outdoor flashing twice.
(Lack of Refrigerant)
* Check refrigerant amount.
PH, Indoor Unit. - (Condition Code)
Yellow LED, Outdoor flashing 13 times.
(High Voltage Protection)
* Check supply voltage.

PL, Indoor Unit. - (Condition Code)
Yellow LED, Outdoor flashing 12 times.
(Low Voltage Protection)
* Check supply voltage.
P5, Indoor Unit - (Condition Code)
(Compressor Current Out of Normal Range)
* Check the indoor & outdoor coils for airflow obstructions.

HO, Indoor Unit - (Condition Code)
(Anti-High Temperature Protection, Heating Mode)
* Check the indoor coil for airflow obstructions.
* Check the indoor fan motor for correct operation.
H4, Indoor Unit - (Condition Code)
Yellow LED, Outdoor flashing 6 times.
(Anti-High Temperature Protection)
* Check the indoor & outdoor coils for airflow obstructions.
* Check the indoor & outdoor fan motor for correct operation.

H5, Indoor Unit - (Condition Code)
Yellow LED, Outdoor flashing 4 times.
(IPM Protection)
* Over current protection of IPM module.
H7, Indoor Unit - (Condition Code)
(IPM Protection)
* Over current protection of IPM module.

E6, Indoor unit.
Green LED, Outdoor unit on.
* Check for DC voltage at the following points:
> Turn the power off at the isolation switch then disconnect the Signal Wire off the indoor terminal block.
> With the Signal Wire disconnected, turn the unit back on and leave it in “standby mode”.
> With a multimeter, test the DC output from the signal wire connecting to the indoor unit & earth.
> If the meter reads a low stable voltage, the indoor PCB should be okay.
> Then by using the same method, test the output signal on the terminal block from the outdoor PCB & earth.
> If the meter reads a pulsing voltage in the low 50's, the outdoor PCB should be okay.
> If the meter reads 0 DC volts, this would indicate the PCB in question is faulty.

Note: If both indoor & outdoor PCB’s appear okay, continue:

Contd: by next post > Part-2