The display of AC Shows F2 instead of temperature in panel what is a reason
Seems to be three main reasons for a self diagnostic error code F2. Assuming the AC system is working and blowing cold air after startup.
1. The Control System Diagnostic has detected an overcurrent condition in the fan relay system.
UNPLUG THE AC FOR THIS PART.
Carefully remove the outer fan shroud and try to manually spin the blower fan. If you feel any resistance on any part of its revolution, check clearances with the casing. This will cause the fan drive motor to demand more current to start and move up to speed. If no obstruction noted, but resistance still noted, then try manually lubricating the main fan shaft bearings with some WD40 or similar lubricating product..
Manually rotate to test again. A smoothly running fan reduces initial total current required for startup. (This is a temporary fix but might show if a bad fan bearing is the culprit.)
Replace everything and reconnect to power. Test.
2. The Control System Module is itself faulty. Call an 'Authorized' Certified Product Repair Depot' and ask for a technician to answer a question about the product. (Might not be Company Policy though to speak to customers directly.) If you are successful, he might have a quick fix for the module or tell you how to 'in service' test the unit using the buttons on the unit or remote if any supplied.
Digital electronics require a lower voltage to operate and so there is some kind of voltage reduction circuit (transformer circuit) to power it. A misbehaving or glitchy power supply might be the problem. This is fairly hard to test - for consumers - so you need the expert to point the way for you.
3 The 'TOTAL' energy draw of the compressor and the fan has exceeded programmed parameters.
Most AC units like yours use a fairly large capacitor to 'jump start' the compressor motor. Some capacitors also multitask and help control fan speed regulation. A failing capacitor will result in less than normal results and could trigger the 'overload' condition.
Not every consumer will have the time, expertise, or confidence to test this. CHARGED CAPACITORS ARE DANGEROUS and can seriously ruin you day if safety precautions are not met.
If the capacitor is faulty, replace with the exact same unit if possible - or the cheaper, generic one if available from your local appliance service store.
Bringing the unit to an Authorized Repair Depot is sometimes not an option, so hiring a mobile AC repairman (expensive, so calculate the present used value of the unit) to check the unit is the final, best option. Sometimes a new replacement is the way to go.
Sep 22, 2015 |