I was told by an ac tech that my unit double coiled and it needs to have the coils split to clean them. Is this true?

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.

R22= 70-80psig
R410a=120-130psig
Depending on many variables such as blower speed, coils clean, indoor/outdoor temps.

The blinking is an indicator that it needs service. Call a technician! Ask if they are experienced in mini split systems. You can check the air filters. Check the outdoor coil to see if its clean or covered up with dirt. And at the breaker or disconnect, turn off power, wait 5 mins, and turn it back on. Then give it 3-5 mins to see if it will reset itself. If this don't work, call a tech/service provider! These units are troublesome to troubleshoot.

If this is a ductless split call a tech! The ductless split systems can be a troublesome unit to diagnose. A few things to try. Clean air filters and ensure coil behind is clean. And build up or debris on blower wheel (indoor fan blades) will cause unit to fault. Turn off power at breaker or disconnect and clean (with water hose and medium pressure) the outdoor coil. Be sure you will not damage outdoor coils fins with too much water pressure. Turn power on. If this simple service don't do it again, call a tech! Be sure to ask if they have someone who is experienced with mini split systems and be patient. Even the best technician will need to call carrier for tech support.

Name of malfunction = Outdoor tube sensor open or short circuit
Display of double eight code = F4

this means your outdoor unit cannot read the temperature sensor that is attached to the coil. Could be a bad sensor, a loose connector, or bad wiring. If you feel like a gambler, grab a multimeter and a drill driver and start probing wires after you dismantle the outdoor unit. Otherwise, call a tech to do an estimate or repair.

It's 'possible' but not likely that you need additional freon.

What is more likely is the 'filter' (for inside coil) is dirty and possibly the coil itself - and/or - the outside coil is dirty.

I would check out the filter - if dirty - I would change it and would also inspect the inside coil. If it's also dirty I would clean it the best I could (with a brush of some sort).

I would also check the outside coil and clean it if need be.

Hope this helps.

You always need to keep both coils clean on your AC.

The evaporator coil (where room air is drawn in and through a filter) - is easy to keep clean - 'just keep the filter changed on a regular basis and you will probably never need to actually clean the evaporator coil. Occasionaly you might need to brush the coil with a brush or something - but this is not a big concern.

The condenser coil (where hot air blows from) is even 'easier,' for you don't have to mess with a filter, just keep the coil clean. You can occasionally pull the unit (when needed) and wash this coil with a water hose. In reality this coil will not get very dirty very fast - although it will (over time) acquire some dirt/dust, but as I say - it is pretty easy to keep clean. Note: Condensing units (split systems) that sit in a yard will get much dirtier much faster than window/thru the wall units such as yours, but you still have to keep a eye on the coil.

A good rule of thumb - is to change the filter (in front of the evaporator coil) - monthly.

As for the condenser coil (where hot air blows from) you can easy see it and just need to keep it clean, with no set (usually) time to do so.

good luck!

clogged drain. dirty coils, or froze up. clear the drain with a shop vac. call a tech to clean coils or check charge on unit

Yes it is true . Sound like you are low on freon the unit is shutting off on the low pressure switch or high pressure switch is the outside unit clean ?you may need service. Tom

You maybe iced up. Turn of AC turn fan on and wait about 45 minutes. If fan is blowing air out of vents chances are you were iced up. Two reason for iceing up are AC coil dirty and low on Freon. You need a service tech to check your Charge on system. If you can get to the coil to clean it grreat. Spray it with water let it set and brush clean with a toilet stool bruch. It will not damage the coil. If it is to stopped up you may have to have a service tech chemicaly clean the coil. Fan motors do go out. ou realy need a service tech to check this Rusty