Soleus dual mini split KFMHP18 fault error F1

The Possible Causes of the errors are:-
Wiring Mistake or Wiring Problem
Bad Sensor or not work properly
Bad PCB Board on your ac

The PCB computer board that controls a mini split is having a problem seeing the correct voltage from the sensors it uses.

The wiring and many sensors need to be checked to see if they are malfunctioning.

Indoor room temperature sensor.
To troubleshoot a unit the location of the many sensors will need to be known.

This information can be found in the manual for the unit and depending on the manufacturer may be available from their website.

It is also possible that the PCB board has gone bad.
If after testing all the sensors and wiring and they show good this usually points to a bad PCB board.

Another thing that can cause problems is a unit wired wrong or wiring that has a short or open.
Most often these errors require a technician and will be outside the average home DIY job.
http://www.hvachowto.com/2017/06/15/e4-e5-e6-f1-f2-f3-error-codes-on-a-mini-split

Full list of Gree Air Conditioner Mini Split Units Fault Codes. When error codes appear on the Gree air conditioner indoor display, this tells the user there is an issue with the Gree AC unit. The error code displayed will inform you of the issue or problem that is occurring with the air conditioner. Knowing what the error code means and its definition will help you to understand and troubleshoot the exact Gree air conditioner part that needs to be fixed, cleaned, repaired, or replaced. You can then clean, fix, or replace the Gree part yourself and save money. See below for all error codes that can occur on Gree Mini Split AC's.
Gree Mini Split Air Conditioner Error Codes - How To Fix
Gree Viero AC Mini Split PDF Owners and Troubleshooting Manual
GREE DUCTLESS AIR CONDITIONING & HEATING SYSTEM INSTALLATION MANUAL

Gree Mini Split Air Conditioner Part Names and Locations
INDOOR AND OUTDOOR UNIT
The Gree Air Conditioning Vireo System has onboard error code diagnostics. The outdoor unit will provide status indicators and the indoor wall unit and remote control will display error codes. The following is a summary of the codes with explanations...
GREE AC DIAGNOSTIC ERROR CODES
Gree Vireo Mini Split Air Conditioner Error Code F0
Refrigerant Leakage Protection
1) Refrigerant leak(s).
2) Indoor coil temperature sensor not calibrated.
3) Refrigerant flow is restricted (ex. valve, exv, debris)
Outdoor Unit Red Light Indicator - 9 flashes and 1 sec Off
Gree Vireo Mini Split Air Conditioner Error Code E1
System High Pressure
1) Over charged with refrigerant.
2) Blocked or dirty outdoor coil.
3) Extreme outdoor ambient conditions
Gree Vireo Mini Split Air Conditioner Error Code E2
Indoor Anti-Freeze Protection
1) Low return airflow.
2) Indoor fan speed is too low.
3) Indoor coil is blocked or dirty.
Outdoor Unit Yellow Light Indicator - 3 flashes and 1 sec Off

Gree Vireo Mini Split Air Conditioner Error Code E4
Compressor High Discharge Temperature Protection
Please refer to the malfunction analysis (discharge temperature, overload) in service manual.
Outdoor Unit Yellow Light Indicator - 7 flashes and 1 sec Off
Gree Vireo Mini Split Air Conditioner Error Code E5
Overcurrent Protection
1) Supply voltage is unstable.
2) Supply voltage is too low and system load is too high.
3) Indoor coil is blocked or dirty.
Outdoor Unit Yellow Light Indicator - 5 flashes and 1 sec Off
Gree Vireo Mini Split Air Conditioner Error Code E6
Communication Malfunction
1) Communication cable is wired incorrectly between indoor and outdoor units.
2) Indoor or Outdoor control board malfunction.
Outdoor Unit Yellow Light Indicator - Continuous On
Gree Vireo Mini Split Air Conditioner Error Code E8
High Temperature Resistant Protection
1) Incorrect refrigerant charge level.
2) Refrigerant metering device malfunction.
3) Compressor malfunction.
Outdoor Unit Yellow Light Indicator - 6 flashes and 1 sec Off
Gree Vireo Mini Split Air Conditioner Error Code EE
EEPROM Memory Malfunction
Control board malfunction.
Outdoor Unit Yellow Light Indicator - 11 flashes and 1 sec Off
Gree Vireo Mini Split Air Conditioner Error Code C5
System Configuration Malfunction
1) No jumper cap inserted on the control board.
2) Incorrect or damaged jumper cap on control board.
3) Indoor and outdoor units are not compatible.
Gree Vireo Mini Split Air Conditioner Error Code Fo
Pump Down or Gathering Refrigerant Status
Optional Service Mode
Outdoor Unit Yellow Light Indicator - 17 flashes and 1 sec Off

NOTE: All of the Gree Air Conditioner Model Numbers below are applicable for the error codes on this page...
Gree AC Vireo Models: VIR09HP115V1A, VIR12HP115V1A, VIR09HP230V1A, VIR12HP230V1A, VIR18HP230V1A, VIR24HP230V1A, VIR30HP230V1A, and VIR36HP230V1A.
Gree Mini Split Air Conditioner Error Code Charts
Gree Mini Split AC Remote Control Button Names
Gree Mini Split AC Remote Control Icons Display Screen

Gree Mini Split Air Conditioner Air Filter Cleaning Procedure
Gree Viero AC Mini Split PDF Owners and Troubleshooting Manual
GREE DUCTLESS AIR CONDITIONING & HEATING SYSTEM INSTALLATION MANUAL
Need help with error codes on your Gree AC? Please leave a question below and we will be happy to help.

Your 2 errors are most likely related to the compressor itself and the power supply feeding it. If the system is an inverter system, there is usually an "inverter board" or power control board that sends high voltage (usually in DC rectified voltage) to the compressor. If the board is not functioning correctly or if there is an issue with the compressor, it may cause a reverse rotation error along with the power error. Additionally, the compressor itself may have failed and may have shorted or welded windings. This condition can be especially dangerous due to the potential of electricity arcing and the possibility of refrigerant loss. If you are not a technician trained to work on the equipment, I would NOT advise attempting a repair. Some of the power supplies in those units can discharge over 300v DC and there are quite a few components that can cause serious injury. I would call a technician to diagnose the issue.

This is a Zero crossing detection error. This is alarm signal when the main chip can't detect over zero signal. When such failure occurs, the main control board must have fault.

Cheryl, the first thing to do with this and any communication error is to cycle power on the unit. You could just be experiencing a blip in the control circuit that many times resets itself with a cycling of incoming power.

Try cleaning the condenser coil.

A CH46 error indicates the low side sensor or suction line sensor is defective and not within acceptable parameters. It may be loose or off or simply bad.

It's not an error. you have it set in auto mode and it is cooling. when it switches to heat the lights will switch as well. Set to cool only and it should go away.

The F-1 error indicates that the PFC & IPM circuit boards in the condenser needs to be replaced.
We stock a complete line of parts for the Amcor Mini-Split Systems.
[email protected]
201-266-8234 option 2

F1 indicates flood fault. There is no reset, machine thinks it has flooded. If machine was running OK until electrical storm, then it could have shorted the mains filter control board (DD603 models-this mains filter board also acts as flood switch), although this is unlikely to have shorted. More common is dishwasher has had a leak causing F1 fault, or corrosion on mains filter board . Open bottom drawer and shine torch underneath to see if there is any water in the base of the cabinet- if yes, machine has leaked and activated flood switch. If not, flood switch board may be faulty.
Unfortunately, access to this flood switch control is permitted only by removal of the bottom drawer- recommend calling technician unless very keen!! If keen, read on!!
-To remove drawer- there is a tag at the bottom front on each side of drawer when you open it -just below the round plastic plug. You need to push this tag in and slide backwards on each side, then drawer will lift out-Careful as hoses and wiring still attached, but long enough to allow access. Mains filter control board is located under plastic cover at left rear- press tag on plastic cover and slide to the right- you will now see small electronic board. This is the mains filter board that doubles as the flood switch. It is held in place by 1 screw- you need to remove wires from board before removing it). Check circuit board for corrosion or evidence of short circuit- if so, replace circuit board.
Good luck, but advise seeking professional help unless you very confident!!