Fault Codes – FS Series
Current Models R410a
Pressing Check on the wired remote while CHECK is flashing will give the Fault and the address of the unit with the Fault
Pressing Timer Set with the fault displayed will display a second code giving further information (detail code)
Pressing Check for 5 seconds will check past faults
On wireless handsets press the temp up for 5 seconds to enter error check mod
Scroll through the codes using the temp up button until a beep is heard from the indoor unit
Press set and repeat until the full code is displayed
F Code Display = F15
Detail Display = 01
Outdoor LED
302 =
303 = Flash
304 = Flash
305 = Flash
306 = Flash
307 = See Note 1
308 = See Note 1
309 =
Measurig Fault Code = Drain Failure
F Code Display = F16
Detail Display = 01
Outdoor LED
302 =
303 =
304 =
305 =
306 =
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = Louvre Failure
F Code Display = F17
Detail Display = 01
Outdoor LED
302 =
303 =
304 =
305 =
306 =
307 =
308 = See Note 1
309 = See Note 1
Measurig Fault Code = Option Problem
F Code Display = F17
Detail Display = 02
Outdoor LED
302 = Flash
303 = Flash
304 =
305 =
306 =
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = DC Fan Motor Failure
F Code Display = F20
Detail Display = 01
Outdoor LED
302 =
303 =
304 =
305 = Flash
306 =
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = ID Air Sensor
F Code Display = F20
Detail Display = 02
Outdoor LED
302 = Flash
303 =
304 =
305 = Flash
306 =
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = RC Air Sensor
F Code Display = F21
Detail Display = 01
Outdoor LED
302 =
303 = Flash
304 =
305 = Flash
306 =
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = ID Pipe Sensor
F Code Display = F25
Detail Display = 01
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *Only for Older Models with LEDS 1-6
308 = See Note 1
309 = See Note 1
Measurig Fault Code = Addressing Incorrect
F Code Display = F26
Detail Display = 01
Outdoor LED
302 =
303 =
304 = Flash
305 =
306 = Flash
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = RC Comms Problem
F Code Display = F27
Detail Display = 01
Outdoor LED
302 =
303 = Flash
304 = Flash
305 =
306 = Flash
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = ID - OD Comms Disconnected ID
F Code Display = F27
Detail Display = 02
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *Only for Older Models with LEDS 1-6
308 = See Note 1
309 = See Note 1
Measurig Fault Code = ID - OD Comms Connection ID
F Code Display = F27
Detail Display = 05
Outdoor LED
302 = Flash
303 = Flash
304 = Flash
305 =
306 = Flash
307 = Flash
308 = See Note 1
309 = See Note 1
Measurig Fault Code = ID - OD Comms Connection ID
F Code Display = F27
Detail Display = 01
Outdoor LED
302 = Flash
303 =
304 = Flash
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = ID - OD Comms Disconnected OD
F Code Display = F27
Detail Display = 02
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = ID - OD Comms Connection OD
F Code Display = F27
Detail Display = 05
Outdoor LED
302 =
303 =
304 =
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = ID - OD Comms Connection OD
F Code Display = F29
Detail Display = 01
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = ID PCB Setting
F Code Display = F30
Detail Display = 01
Outdoor LED
302 =
303 =
304 =
305 =
306 =
307 = Flash
308 =
309 =
Measurig Fault Code = ID/OD Capacity Incorrect
F Code Display = F30
Detail Display = 02
Outdoor LED
302 =
303 =
304 = Flash
305 =
306 =
307 = Flash
308 =
309 =
Measurig Fault Code = Phase Rotation
F Code Display = F31
Detail Display = 01
Outdoor LED
302 =
303 = Flash
304 =
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = Low Pressure
F Code Display = F31
Detail Display = 02
Outdoor LED
302 = Flash
303 =
304 =
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = High Pressure
F Code Display = F31
Detail Display = 06
Outdoor LED
302 =
303 =
304 = Flash
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Reversing Valve
F Code Display = F31
Detail Display = 08
Outdoor LED
302 =
303 = Flash
304 =
305 =
306 =
307 = Flash
308 =
309 =
Measurig Fault Code = Indoor Coil Iced
F Code Display = F31
Detail Display = 09
Outdoor LED
302 =
303 = Flash
304 = Flash
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Gas Leak
F Code Display = F31
Detail Display = 10
Outdoor LED
302 =
303 = Flash
304 = Flash
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = Low Gas, Valve Shut or Blockage
F Code Display = F32
Detail Display = 03
Outdoor LED
302 =
303 =
304 = Flash
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = Inverter Low dc Volts
F Code Display = F32
Detail Display = 04
Outdoor LED
302 = Flash
303 = Flash
304 =
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = Inverter IPM
F Code Display = F32
Detail Display = 05
Outdoor LED
302 = Flash
303 = Flash
304 =
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = Compressor Overcurrent
F Code Display = F32
Detail Display = 06
Outdoor LED
302 = Flash
303 = Flash
304 =
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Compressor Disch Temp High
F Code Display = F32
Detail Display = 08
Outdoor LED
302 = Flash
303 =
304 = Flash
305 = Flash
306 =
307 =
308 =
309 =Inverter PFC
Measurig Fault Code =
F Code Display = F32
Detail Display = 09
Outdoor LED
302 = Flash
303 =
304 =
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = Inverter High dc Volts
F Code Display = F32
Detail Display = 10
Outdoor LED
302 = Flash
303 = Flash
304 = Flash
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = Compressor Rotation Problem
F Code Display = F33
Detail Display = 01
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = Compressor High Current
F Code Display = F33
Detail Display = 02
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = High Discharge Temp
F Code Display = F35
Detail Display = 2
Outdoor LED
302 =
303 = Flash
304 =
305 =
306 = Flash
307 =
308 =
309 =
Measurig Fault Code = OD dc Fan Motor Locked
F Code Display = F40
Detail Display = 01
Outdoor LED
302 =
303 =
304 = Flash
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = OD Outlet Sensor
F Code Display = F40
Detail Display = 11
Outdoor LED
302 =
303 =
304 =
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Suction Temp
F Code Display = F40
Detail Display = 21
Outdoor LED
302 = Flash
303 =
304 = Flash
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = OD Liquid Sensor
F Code Display = F40
Detail Display = 31
Outdoor LED
302 = Flash
303 = Flash
304 = Flash
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = Defrost Sensor
F Code Display = F40
Detail Display = 51
Outdoor LED
302 =
303 = Flash
304 = Flash
305 =
306 =
307 =
308 =
309 =
Measurig Fault Code = Discharge Sensor
F Code Display = F40
Detail Display = 41
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = Discharge Sensor
F Code Display = F40
Detail Display = 61
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = OD Pipe Sensor
F Code Display = F41
Detail Display = 02
Outdoor LED
302 = Flash
303 = Flash
304 =
305 =
306 =
307 = Flash
308 =
309 =
Measurig Fault Code = HP Switch
F Code Display = F41
Detail Display = 03
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = Heating HP Switch
F Code Display = F41
Detail Display = 11
Outdoor LED
302 = Flash
303 =
304 =
305 =
306 =
307 = Flash
308 =
309 =
Measurig Fault Code = Low Pressure Sensor
F Code Display = F42
Detail Display = 01
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = Compressor Current Sensor
F Code Display = F42
Detail Display = 11
Outdoor LED
302 =
303 = Flash
304 =
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Current Sensor Open
F Code Display = F44
Detail Display = 01
Outdoor LED
302 = Flash
303 =
304 =
305 = Flash
306 =
307 =
308 =
309 =
Measurig Fault Code = Inverter IPM Sensor
F Code Display = F49
Detail Display = 01
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = OD PCB Setting Faulty
F Code Display = F49
Detail Display = 02
Outdoor LED
302 = *
303 = *
304 = *
305 = *
306 = *
307 = *
308 = *
309 = *Only for Older Models with LEDS 1-6
Measurig Fault Code = OD PCB Setting Faulty
Note 1: LED308 is lit if the master unit is the problem or 309 for the slave
LED 301 is lit when power is supplied to the PCB
A General Guide To Urban Style Products
Pipework
• Pipe sizes and lengths should be as the relevant Technical Guide
• Both lines should be insulated
• No line accessories or oil traps should be fitted
• In cooling mode the suction line should sweat, but not freeze
• In heating mode both pipes should be between 30 and 60C
• Pipework should be refrigeration quality
• Look for restrictions. They could cause compressor failures.
Outdoor Unit
• Discharge Temperature should be between 50 and 70C
• Suction Temperature should be between -3 and 4C
• Check Suction Line is sweating in cooling - problem if not!
• Hot Recip. Compressor = PROBLEM
• Sweating/Frost on expansion line - undercharged
Indoor Unit
• Is it level? Have we adequate drainage?
• Smells are always due to site conditions or drains.
• Flashing lights? = Fault Diagnostics - see over
• When were the filters last cleaned?
• Is the unit too large/small (between 5/20 air circs/hr)
• Is the air short cycling?
Controller
• Is it a wired or wireless handset.
• Is the handset too far away?
• When were the batteries changed last?
• With wired handset, check for interference.
• Is the unit in Emergency Mode?
• Check unit and controller channels compatible
Wiring
• Interconnecting comms wiring is low voltage
• If you have 230V live, check you have a neutral as well
• Check Mains and comms cable not swapped round
• Multi linked systems must be set up as such
• Check voltage drops! Check it isn’t down to Earth!
• Interconnecting cables should be circular crimped
Selecting Emergency Mode is done at the Indoor and Outdoor Unit PCB.
It bypasses the Control Sensors and should not be done for more than 30 minutes.
Indoor PCB - Swicth SS1 to Emergency Setting
Outdoor PCB - Swicth Emergency Swicth 1 to ON
Outdoor PCB - Swicth Emergency Swicth 2 to Cool or
Wire E - 1 - 2 - 3
All Earth - Live - Neutral - Comms
Sensor Resistances – Use to check Thermistor
Air and Pipe sensors apply to indoor AND outdoor units
The discharge sensor is only in the outdoor unit.
If the fault code suggests the sensor is a problem but you
get a sensor reading as to the right then either the connection or PCB is at fault.
Sensor - At 10C - At 20C - At 30C
Air Sensor - 40K 0hms - 25K 0hms - 16K 0hms
Pipe Sensor - 40K 0hms - 25K 0hms - 16K 0hms
Discharge Sensor - 480K 0hms - 293K 0hms - 184K 0hms
Fault codes on Panasonic US systems can be checked using both the wired remote controller and the indoor and outdoor unit LEDs. In case of a malfunction
the wired controller will give a fault code as shown below in conjunction with the accompanying LED codes.
The wireless controller can be used to interrogate a fault, if required, as described below.
1 - Press Inspection/Test button on wireless handset. 0 flashes in Unit Number display on handset.
2 - Press Up/Down button until unit starts to bleep.
3 - 1 continuous beep means No fault. 3 short beeps - follow all steps below. 1 short beep - follow step 4 until you get a continuous beep.
4 - Press the handset MODE button. Press the up/down arrow button until you get 2 short bleeps, or one continuous bleep.
5 - Press the MODE button again. Press the up/down arrow button until you get one continuous bleep.
6 - The fault code is now displayed!
RC Display = Normal
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Normal Operation
Caused By = Normal Running
RC Display = A1
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Various
H2P/HBP = Various
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Indoor PCB Failure
Caused By = PCB Failure or External Spike
RC Display = A3
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = High Water Level
Caused By = Float Switch Tripped - Check your drains
RC Display = A6
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Fan Motor Failure - ID Unit
Caused By = Fan Motor not running fast enough
RC Display = A7
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Louvre Motor Failure
Caused By = Louvre Motor Microswitch
RC Display = AF
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Drain System Failure
Caused By = Float Switch Trip while compressor
RC Display = AJ
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Faulty Capacity Setting
Caused By = Ring Technical Support
RC Display = C4
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Pipe Sensor Failure
Caused By = Thermistor reading incorrect
RC Display = C9
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Air Sensor Failure
Caused By = Thermistor reading incorrect
RC Display = CJ
Indoor Unit LEDs
Panel = Flash
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Handset Thermistor failure
Caused By = Thermistor reading incorrect
RC Display = E0
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = Off
Fault Means = Safety Device Trip
Caused By = High Compressor or Fan Temperature
RC Display = Various
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = On
H1P = Various
H2P = Various
Fault Means = Outdoor PCB Failure
Caused By = PCB Failure or External Spike
RC Display = Various
Indoor Unit LEDs
Panel = Off
H1P/HAP =
H2P/HBP =
Outdoor Unit LEDs
HAP = Off
H1P = Off
H2P = Off
Fault Means = Outdoor Power Supply or PCB Failure
Caused By = Check your power supply including neutral
RC Display = E3
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = Off
Fault Means = HP Trip
Caused By = Excess Refrigerant, blockage or contamination
RC Display = E4
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = Off
Fault Means = LP Trip
Caused By = Refrigerant shortage, blockage or contamination
RC Display = E9
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Expansion Valve Failure
Caused By = Expansion valve closed or open circuit
RC Display = F3
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = Off
Fault Means = Discharge Temperature Error
Caused By = Refrigerant shortage or blockage
RC Display = H3
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = On
Fault Means = Failed HP Switch
Caused By = HP trip when compressor off
RC Display = H9
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = On
Fault Means = Failed OD Temperature Sensor
Caused By = Thermistor reading incorrect
RC Display = J3
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = On
Fault Means = Failed Discharge Sensor
Caused By = Thermistor reading incorrect
RC Display = J6
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = On
H2P = On
Fault Means = Failed OD Pipe Sensor
Caused By = Thermistor reading incorrect
RC Display = U0
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = Gas shortage
Caused By = Refrigerant shortage or blockage
RC Display = U1
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Flash
H1P = Off
H2P = On
Fault Means = Phase protection
Caused By = Swap two phases to operate correctly
RC Display = U4
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = ID to OD Unit Transmission failure
Caused By = Faulty connection or PCB
RC Display = UF
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = ID to OD Unit Transmission failure
Caused By = Faulty connection or PCB
RC Display = U5
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = ID Unit to RC Transmission failure
Caused By = Faulty connection or PCB
RC Display = U8
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = RC to RC Transmission failure
Caused By = Faulty connection or RC
RC Display = UA
Indoor Unit LEDs
Panel = Off
H1P/HAP = Flash
H2P/HBP = Flash
Outdoor Unit LEDs
HAP = Various
H1P = Various
H2P = Various
Fault Means = Field SettingSwitch
Caused By = Ring Technical Support Failure
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