6. Error Fault Codes
ERROR CODE
ERROR/PROTECTION TRIGGERED
RECOMMENDATIONS
F12
Pressure switch triggered
Contact your local Panasonic installer, quoting fault code
F14
Compressor abnormal
Contact your local Panasonic installer, quoting fault code
F15
Incorrect speed of the outdoor unit fan
Check there are NO obstruction of FAN in outdoor unit (leaves, sticks or snow). Switch
off power before attempting to remove any obstruction. Fans can start without warning.
F16
Protection against excessive total operating current
Contact your local Panasonic installer, quoting fault code
F20
Compressor overheating guard
Contact your local Panasonic installer, quoting fault code
F22
Power transistor module overheating guard
Contact your local Panasonic installer, quoting fault code
F23
Direct current peaks in the outdoor unit
Contact your local Panasonic installer, quoting fault code
F24
Problems in the cooling circuit
Contact your local Panasonic installer, quoting fault code
F25
Problem switching between heating and cooling
Contact your local Panasonic installer, quoting fault code
F27
Pressure switch
Contact your local Panasonic installer, quoting fault code
F36
Outside temperature sensor
Contact your local Panasonic installer, quoting fault code
F37
Return temperature sensor in indoor unit
Contact your local Panasonic installer, quoting fault code
F40
Hot gas temperature sensor in the outdoor unit
Contact your local Panasonic installer, quoting fault code
F41
PFC circuit
Contact your local Panasonic installer, quoting fault code
F42
Temperature sensor of the heat exchanger in the outdoor unit
Contact your local Panasonic installer, quoting fault code
F43
Outdoor unit defrosting temperature sensor
Contact your local Panasonic installer, quoting fault code
F45
Supply temperature sensor in indoor unit
Contact your local Panasonic installer, quoting fault code
F46
Current converter open in outdoor unit
Contact your local Panasonic installer, quoting fault code
F95
Cooling high pressure guard in outdoor unit
Contact your local Panasonic installer, quoting fault code
H12
Unsuitable output between the indoor and outdoor unit
Contact your local Panasonic installer, quoting fault code
H15
Compressor temperature sensor
Contact your local Panasonic installer, quoting fault code
H20
Water pump abnormal
Reset once if reoccurring contact your local Panasonic installer, quoting fault code
H23
Liquid temperature sensor
Contact your local Panasonic installer, quoting fault code
H42
Compressor low pressure
Contact your local Panasonic installer, quoting fault code
H62 *
Water-side flow rate cut-out
Check & Clean in line filter. Remove air within the pipework. Reset the system. If
fault occurs repeatedly (4 or more times in 24hrs) contact your local Panasonic
installer quoting fault code.
H64
High-pressure sensor
Contact your local Panasonic installer, quoting fault code
H65
Defrost circulation error
Reset once if reoccurring contact your local Panasonic installer, quoting fault code
H70 *
OLP additional electric heater for heat pump
This error code can be reset via controller. System will appear to be running normally.
You must contact your local Panasonic installer, quoting fault code for a full reset.
H72
Hot water tank temperature sensor
Contact your local Panasonic installer, quoting fault code
H76 *
Communication error between remote and HP
Reset error. Switch off (power) for 2 minutes. Wait 1 minute. If still present contact
your local Panasonic installer, quoting fault code
H90
Communication errors between indoor and outdoor unit
Reset error. Ensure all isolators are switched on. Contact your local Panasonic
installer, quoting fault code
H91 *
OLP electric immersion heater for hot-water tank
Check thermostat on cylinder is not set too high. Reset error. If reoccurring contact
your local Panasonic installer quoting fault code.
H95
Indoor/outdoor unit incorrectly connected
Contact your local Panasonic installer, quoting fault code
H98
High pressure guard in outdoor unit
Contact your local Panasonic installer, quoting fault code
H99
Antifreeze protection for indoor unit heat exchanger
Contact your local Panasonic installer, quoting fault code
Indicator ONLY - DHW is stored at above +60 ºC –
“WARNING HOT”
No action required
* Errors experienced following initial installation.
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