KSV 26HRE, KSV 35HRE, KSV 53HRE, KSV 62HRE, KSV
70HRE, KSV 80HRE, KSV 26CRE, KSV 35CRE and KSV 70CRE
LED
Fault/Condition Code (Indoor Display PCB)
* In the event of a complete shutdown or an operational control adjustment the indoor LED display PCB will illustrate the relevant condition/fault code.
* In the event of a complete shutdown or an operational control adjustment the indoor LED display PCB will illustrate the relevant condition/fault code.
LED
Flash Code Sequence Description (Outdoor PCB)
* In the event of a complete shutdown or an operational control adjustment the outdoor PCB Green, Red, Orange & Yellow LED’s remain Off, Flash or remain On to indicate a fault or Condition code sequence.
* In the event of a complete shutdown or an operational control adjustment the outdoor PCB Green, Red, Orange & Yellow LED’s remain Off, Flash or remain On to indicate a fault or Condition code sequence.
Green-D5
LED: Outdoor unit, On.
* Normal Communication & Normal Operation.
Red-D6 LED: Outdoor unit, On.
* Normal Communication & Normal Operation.
Orange-D16 LED: Outdoor unit, On.
* Normal Communication & Normal Operation.
Yellow-D5 LED: Outdoor unit, On.
* Normal Communication & Normal Operation.
* Normal Communication & Normal Operation.
Red-D6 LED: Outdoor unit, On.
* Normal Communication & Normal Operation.
Orange-D16 LED: Outdoor unit, On.
* Normal Communication & Normal Operation.
Yellow-D5 LED: Outdoor unit, On.
* Normal Communication & Normal Operation.
Not
Operating
* Check the wiring configuration from the outdoor unit to the indoor unit. Is it wired up correctly in accordance to the wiring diagrams provided on both indoor & outdoor units?
* Try operating the unit by the forced operations button: By pressing the button once, the unit will activate in Auto mode. Pressing it twice will turn the unit off.
* If the unit can be operated by the forced operations button, check the remote controller.
* If the unit can be operated by the forced operations button while there is no indoor LED display, replace the display PCB assembly.
* If the unit cannot be operated by the use of the remote control or the forced operation button, check for supply voltages.
* Check the wiring configuration from the outdoor unit to the indoor unit. Is it wired up correctly in accordance to the wiring diagrams provided on both indoor & outdoor units?
* Try operating the unit by the forced operations button: By pressing the button once, the unit will activate in Auto mode. Pressing it twice will turn the unit off.
* If the unit can be operated by the forced operations button, check the remote controller.
* If the unit can be operated by the forced operations button while there is no indoor LED display, replace the display PCB assembly.
* If the unit cannot be operated by the use of the remote control or the forced operation button, check for supply voltages.
* Check for supply voltage at the following points:
From the isolation switch to the Active-In & Neutral connector points located on the indoor PCB.
If supply power is available at the above points, yet the unit can still not be operated by the remote control or the forced operation button, replace the indoor PCB.
From the isolation switch to the Active-In & Neutral connector points located on the indoor PCB.
If supply power is available at the above points, yet the unit can still not be operated by the remote control or the forced operation button, replace the indoor PCB.
Diagnostic
Display Mode Description
Built
into the software for models: KSV53HRE, KSV62HRE, KSV70CRE/HRE & KSV80HRE
are two different diagnostic methods: (Fault Codes & Condition Codes) that
can be used to help diagnose various faults.
These two diagnostic types are described in the following:
Note: Where there is a referral to (Remote Control Access – 4)
* This indicates the need to use the remote controller to view the relevant fault code.
This is achieved by pressing the “Light” button 4 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.
These two diagnostic types are described in the following:
Note: Where there is a referral to (Remote Control Access – 4)
* This indicates the need to use the remote controller to view the relevant fault code.
This is achieved by pressing the “Light” button 4 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
Code Descriptions:
E4, Indoor Unit. (Compressor Discharge High Temperature Protection)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Flashing.
* Check the outdoor coil for airflow obstructions.
* Check the outdoor fan motor for correct operation.
E4, Indoor Unit. (Compressor Discharge High Temperature Protection)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Flashing.
* Check the outdoor coil for airflow obstructions.
* Check the outdoor fan motor for correct operation.
E5, Indoor Unit. (AC Over-Current Protection)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit Off.
* While the unit is in operation, check the maximum current draw. If it’s above the maximum current rating illustrated on the outdoor rating plate, check operation of the compressor.
E8, Indoor Unit. (Anti-High Temperature Protection)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit On.
* Check the indoor & outdoor coils for airflow obstructions.
* Check the indoor & outdoor fan motors for correct operation.
EE,
Indoor unit. (Loading EEPROM malfunction)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit On.
* Faulty Program Chip on outdoor PCB. (Replace Outdoor PCB)
H7, Indoor Unit. (System Pressure to High)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit Flashing.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Flashing
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit On.
* Faulty Program Chip on outdoor PCB. (Replace Outdoor PCB)
H7, Indoor Unit. (System Pressure to High)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit Flashing.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Flashing
* In Cooling mode:
> Check the outdoor coil for airflow obstructions.
> Check outdoor fan operation.
* In Heating mode:
> Check the indoor coil for airflow obstructions.
> Check indoor fan operation.
* Check for restrictions within the refrigeration system.
* Check for contamination within the refrigeration system.
* Check Supply Voltage.
> Check the outdoor coil for airflow obstructions.
> Check outdoor fan operation.
* In Heating mode:
> Check the indoor coil for airflow obstructions.
> Check indoor fan operation.
* Check for restrictions within the refrigeration system.
* Check for contamination within the refrigeration system.
* Check Supply Voltage.
HC, Indoor unit. (PFC Protection)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit Flashing.
* Check supply voltage.
PL, Indoor unit. (Low Voltage Protection)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Off.
* Check supply voltage.
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit Flashing.
* Check supply voltage.
PL, Indoor unit. (Low Voltage Protection)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Off.
* Check supply voltage.
PH,
Indoor unit. (High Voltage Protection)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit Flashing.
* Check supply voltage.
P7, Indoor unit. (IPM Sensor Circuit Malfunction)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Flashing.
* Replace Outdoor PCB Assembly.
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit Flashing.
* Check supply voltage.
P7, Indoor unit. (IPM Sensor Circuit Malfunction)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Flashing.
* Replace Outdoor PCB Assembly.
U1, Indoor unit. (Compressor Phase Detection Circuit Malfunction)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit Flashing.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Off.
* Replace Outdoor PCB Assembly.
U5, Indoor unit. (AC Current Detect Circuit Malfunction)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit On.
* Replace Outdoor PCB Assembly.
U7, Indoor unit. (4-Way Valve Malfunction)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit Off.
* 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.
E2, Indoor Unit. (Anti-Freeze Protection)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Off.
* 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. (Anti-Freeze Limit – Frequency Drop)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Off.
* 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.
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Off.
* 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. (Anti-Freeze Limit – Frequency Drop)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Off.
* 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.
EU, Indoor Unit. (IPM Over Temperature Limit)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit Flashing.
* Check the outdoor coil for airflow obstructions.
* Check operation of outdoor fan motor.
F6, Indoor Unit. (Anti-High Temperature Protection)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit Flashing.
* Check the outdoor coil for airflow obstructions.
* Check the outdoor fan motor for correct operation.
H1, Indoor unit. (Defrosting)
PO, Indoor Unit. {Remote
Control Access - 5}
(Compressor Minimum Frequency - Test State)
* Set remote control in Cooling mode: 16ºC or Heating mode: 27ºC.
P1, Indoor Unit. {Remote Control Access - 5}
(Compressor Rated Frequency - Test State)
* Set remote control in Cooling mode: 18ºC or Heating mode: 29ºC.
P2, Indoor Unit. {Remote Control Access - 5}
(Compressor Maximum Frequency - Test State)
* Set remote control in Cooling mode: 19ºC or Heating mode: 30ºC.
P3, Indoor Unit. {Remote Control Access - 5}
(Compressor Medium Frequency - Test State)
* Set remote control to Cooling mode: 17ºC or Heating mode: 28ºC.
* Set remote control in Cooling mode: 16ºC or Heating mode: 27ºC.
P1, Indoor Unit. {Remote Control Access - 5}
(Compressor Rated Frequency - Test State)
* Set remote control in Cooling mode: 18ºC or Heating mode: 29ºC.
P2, Indoor Unit. {Remote Control Access - 5}
(Compressor Maximum Frequency - Test State)
* Set remote control in Cooling mode: 19ºC or Heating mode: 30ºC.
P3, Indoor Unit. {Remote Control Access - 5}
(Compressor Medium Frequency - Test State)
* Set remote control to Cooling mode: 17ºC or Heating mode: 28ºC.
P5, Indoor Unit. (Compressor Current Out of
Normal Range)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit Flashing.
Orange-D16 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit Off.
* Check the indoor & outdoor coils for airflow obstructions.
P8, Indoor Unit. (IPM High Temperature Protection)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit On.
* Check the outdoor coil for airflow obstructions.
* Check operation of outdoor fan motor.
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit Flashing.
Orange-D16 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit Off.
* Check the indoor & outdoor coils for airflow obstructions.
P8, Indoor Unit. (IPM High Temperature Protection)
Green-D5 LED, Outdoor unit On.
Red-D6 LED, Outdoor unit Off.
Orange-D16 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit On.
* Check the outdoor coil for airflow obstructions.
* Check operation of outdoor fan motor.
U3,
Indoor unit. (Drop in Supply Voltage)
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit On.
* Check supply voltage.
Green-D5 LED, Outdoor unit Off.
Red-D6 LED, Outdoor unit On.
Orange-D16 LED, Outdoor unit. On.
Yellow-D5 LED, Outdoor unit On.
* Check supply voltage.
E6, Indoor unit. (Communication Fault)
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit Off.
Orange-D6 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit Flashing.
* 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 to the following page.
* Disconnect the main power supply to the indoor unit by means of the isolation switch. After approximately one minute, turn the power supply back on & attempt to operate the unit in “Auto” mode with a set temperature of two degrees above or below the ambient temperature.
If the Communication fault has not cleared:
* Check for DC voltage at the following points on the outdoor PCB, while in Standby Mode.
Note: The following DC voltage check can only be conducted within a 5 minute time frame, as supply power to the outdoor PCB will be cut 5 minutes after initial power up.
> Between the Negative & Positive points of the capacitor.
Note: Voltage range should be: (+/- 15%) 53V-DC.
Relevant
DC voltage test points.
Note: These voltage points are located at the bottom right hand side of the outdoor PCB.
Note: These voltage points are located at the bottom right hand side of the outdoor PCB.
If the Communication fault has not cleared:
* Check for supply voltage at the following points.
> Between the Active -Out & Neutral points on the indoor PCB.
> Between the Active & Neutral points on the indoor terminal block.
> Between the Active & Neutral points on the outdoor terminal block.
> Between the Active & Neutral solder points on the outdoor PCB.
* Check for supply voltage at the following points.
> Between the Active -Out & Neutral points on the indoor PCB.
> Between the Active & Neutral points on the indoor terminal block.
> Between the Active & Neutral points on the outdoor terminal block.
> Between the Active & Neutral solder points on the outdoor PCB.
* Disconnect the supply power & check the continuity of the communication
wire from the following points:
> Communication terminal point on the indoor PCB.
> To the communication terminal points on the indoor terminal block.
> To the communication terminal points on the outdoor terminal block.
> To the communication solder point on the outdoor PCB.
Note: When checking the continuity between the indoor terminal block & the outdoor terminal block, disconnect the Communication & Active wires on the indoor terminal block, and then attach them together. This will create a circuit that can then be tested between the Communication & Active terminal points on the outdoor terminal block.
Note: If the Active, Neutral & Communication supply voltage & continuity checks are okay, yet E6 fault code still exists, replace the outdoor PCB.
> Communication terminal point on the indoor PCB.
> To the communication terminal points on the indoor terminal block.
> To the communication terminal points on the outdoor terminal block.
> To the communication solder point on the outdoor PCB.
Note: When checking the continuity between the indoor terminal block & the outdoor terminal block, disconnect the Communication & Active wires on the indoor terminal block, and then attach them together. This will create a circuit that can then be tested between the Communication & Active terminal points on the outdoor terminal block.
Note: If the Active, Neutral & Communication supply voltage & continuity checks are okay, yet E6 fault code still exists, replace the outdoor PCB.
PU,
Indoor unit. (Capacitor Charge Malfunction)
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit On.
Orange-D6 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit On.
* Disconnect supply power.
* Check the continuity of the connecting wires from the outdoor PCB to the Reactor, as listed below.
> Solder point (Orange wire) on outdoor PCB to (Orange wire) terminal point on Reactor.
> Solder point (White wire) on outdoor PCB to (White wire) terminal point on Reactor.
> Check the continuity of the reactor. If open circuit, change it.
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit On.
Orange-D6 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit On.
* Disconnect supply power.
* Check the continuity of the connecting wires from the outdoor PCB to the Reactor, as listed below.
> Solder point (Orange wire) on outdoor PCB to (Orange wire) terminal point on Reactor.
> Solder point (White wire) on outdoor PCB to (White wire) terminal point on Reactor.
> Check the continuity of the reactor. If open circuit, change it.
Lc, Indoor unit. (Start-up Failure)
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit Flashing.
Orange-D6 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit Flashing.
* Disconnect the supply power to the unit by means of the isolation switch.
* Remove the two top covers on the outdoor unit to access the main outdoor PCB. Then measure the resistance value of each winding from the three (Red/Comp-W, Blue/Comp-V & Yellow/Comp-U) solder points on the outdoor PCB.
* If there is an open circuit reading from any of these points then check the following:
> Measure the resistance value from the spade terminals on the compressor.
> Check the “three point plug” located on the harness that runs between the main outdoor PCB & the compressor.
Note: The resistance value should be the same across any terminal combination.
* If all resistance checks are okay, yet Lc fault still exists, replace the outdoor PCB.
H5, Indoor Unit. (IPM Protection)
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit Flashing.
Orange-D6 LED, Outdoor unit. Off.
Yellow-D5 LED, Outdoor unit On.
* Disconnect the mains power supply & the compressor from the outdoor PCB. Then measure the resistance between the following points:
> Positive to Comp-U = Open Circuit.
> Positive to Comp-V = Open Circuit.
> Positive to Comp-W = Open Circuit.
Note: All the above resistance readings should read Open circuit.
Note: If any of the above readings are a Short circuit, replace the outdoor PCB.
* While the unit is in operation mode (Heating or Cooling), check the DC output on the outdoor
PCB D15-Diode, as illustrated below.
> D15-Diode = 15V-DC.
Note: If reading is <13.5V-DC or >18V-DC, replace the outdoor PCB.
* If the above reading are okay, remove the spade terminals from the compressor & measure the resistance value of each winding.
Note: The resistance value should be the same value across any terminal combination.
F3
Indoor unit. (Outdoor Ambient Sensor)
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit Off.
Orange-D6 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit On.
F4, Indoor unit. (Outdoor Coil Sensor)
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit Off.
Orange-D6 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit Off.
F5, Indoor unit. (Outdoor Compressor Discharge Sensor)
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit Off.
Orange-D6 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit Flashing.
* Check the Condenser Coil, Outdoor Ambient & Compressor Discharge triple point sensor plug for correct connection.
* Check the continuity of each individual sensor, if anyone of the sensors is open circuit; replace the complete triple connector plug assembly.
Note: If all the above checks relating to the sensors & wiring have been completed, yet the error code still exists, replace the main outdoor PCB.
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit Off.
Orange-D6 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit On.
F4, Indoor unit. (Outdoor Coil Sensor)
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit Off.
Orange-D6 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit Off.
F5, Indoor unit. (Outdoor Compressor Discharge Sensor)
Green-D16 LED, Outdoor unit Off.
Red-D30 LED, Outdoor unit Off.
Orange-D6 LED, Outdoor unit. Flashing.
Yellow-D5 LED, Outdoor unit Flashing.
* Check the Condenser Coil, Outdoor Ambient & Compressor Discharge triple point sensor plug for correct connection.
* Check the continuity of each individual sensor, if anyone of the sensors is open circuit; replace the complete triple connector plug assembly.
Note: If all the above checks relating to the sensors & wiring have been completed, yet the error code still exists, replace the main outdoor PCB.
[Condenser
Coil, Outdoor Ambient & Compressor Discharge sensor connector plug on
underside of outdoor PCB.]
F1,
Indoor unit. (Room Temp Sensor Failure)
F2, Indoor unit. (Tube Temp Sensor Failure)
* Disconnect supply power.
* Check the Indoor Ambient & Indoor Tube sensors for correct connection.
* Check the continuity of the relevant sensor, if the sensor is open circuit, change it.
Note: If all the above checks relating to the sensors & wiring have been completed, yet the error code still exists, replace the indoor PCB.
F2, Indoor unit. (Tube Temp Sensor Failure)
* Disconnect supply power.
* Check the Indoor Ambient & Indoor Tube sensors for correct connection.
* Check the continuity of the relevant sensor, if the sensor is open circuit, change it.
Note: If all the above checks relating to the sensors & wiring have been completed, yet the error code still exists, replace the indoor PCB.
