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Common Faults 2

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 Error Code: DF - Defrosting Code

The DF code appears when the unit is in a pre heat cycle on start up.  It can also appear at...

 Error Code: F1 - Communication Fault

The error code ' F1' means the indoor unit PCB and outdoor unit PCB cannot communicate with each...

 Error Code: F2/F3 - Internal Temperature Sensor Fault

Both error codes signify that there's a problem with the internal sensor. The difference between...

 Error Code: F4 - Internal Fan Fault

The error code 'F4' is indicating either a fault with the indoor fan motor or indoor PCB. To...

 Error Code: F5 - IPM Module Fault ( Intelligent Power Module )

The IPM module is the inverter module which controls the speed of the compressor and the outdoor...

 Error Code: F6/F7/F9 - External Temperature Sensor Fault

All 3 error codes means there is something wrong with the sensors - the difference between the...

 Error Code: FC - Compressor Drive Fault

This error is signifying a fault between the compressor and external PCB.  To fix the error code...

 Error Code: FF - Outdoor Unit Fault

This fault code 'FF' can mean many different things related to the outdoor units components. To...

 Error Code: P1 - Evaporator Temperature Protection

The error code P1 is signifying the unit is getting too hot.  You can check the indoor unit...

 Error Code: P2 - Overheat/strong current protection for IPM module

The error code P2 is signifying a fault with the IPM module, it is either getting too hot or the...

 Error Code: P4/P6/PA - Outdoor Temperature Sensor Fault

To fix this problem you'll need to do the following:  Check the outdoor unit is clear of any...

 Error Code: P8/P9 - Low/high Refrigerant Pressure

The error code 'P8/P9' is signifying the refrigerant in the system is either low or too high. P8...

 Error Code: PC - High Outdoor Ambient Temperature Protection

The error code 'PC' is signifying that the outdoor air sensor is detecting the outdoor ambient...

 USER'S MANUAL KFR23/26/33/36/53/56/63/66/X1C-M