We get a lot of calls from customers and techs in winter time regarding units (turning off, not heating up or cutting out), we find that this is more apparent in the early mornings of evenings when the outside temperature drops.
If you have a high wall split, the LEDs will flash as the video below
Below is a brief description of how DEFROST MODE works:
DEFROST MODE: IS A REQUIRED FUCTION FOR ALL AIR CONDITIONING SYSTEMS IN WINTER TIME.
ICE WILL FORM ON THE OUTDOOR COIL, THE UNIT WILL NEED TO REMOVE THE ICE
BUILD UP BEFORE IT CAN CONTINUE IT’S REGULAR FUCTION.
WHEN THE ICE MELTS FROM THE OUTDOOR COIL WATER WILL BEGIN TO LEAK FROM
UNDERNEATH OF THE OUTDOOR UNIT, THIS IS NORMAL AND NOTHING TO WORRY
ABOUT.
IF A CUSTOMER IS WORRY ABOUT THE WATER LEAKING THEY CAN GET A INSTALLATION
OR SERVICE COMPANY TO COME OUT A FIT A DRAIN LINE TO THE OUTDOOR UNIT.
THE UNIT SHOULD ONLY HAVE A DEFROST CYCLE ONCE AN HOUR, THE DEFROST CYCLE
SHOULD ONLY LAST ABOUT 15MINS, THE SYSTEM WILL ALSO GO THROUGH A PRE-HEAT
MODE BEFORE COMING BACK ON.
YOU WILL FIND THAT DEFROST CYCLE WILL BE MORE APPARENT IN EARLY MORNINGS OR
IN THE EVENINGS, YOU WILL GENERALY FIND THE SYSTEM WONT GO INTO THISMODE
DURING THE WARMER PARTS OF THE DAY UNLESS THE TEMPERATURE IS VERY LOW.
WHEN THE SYSTEM GOES INTO DEFROST MODE THE OPERATION LIGHT WILL BLINK TO
INDICATE THAT THE SYSTEM IN DEFROST MODE (PLEASE CHECK DEFROSTDISPLAY
AGENST THE PARTICULAR MODEL YOU HAVE AS LIGHT DISPLAY MAY CHANGE ON
DIFFERENT MODELS).
FAULTS THAT MAY CAUSE DEFORST TO OCCUR: IF THE SYSTEM IS SHORT ON REFRIGERANT IT WILL SEEM TO
GO INTO A DEFROST CYCLE MORE OFTEN THEN NORMAL, THIS WILL NEED A SERVICE TECH
TO COME OUT A FIX.
ALSO IF A TEMPERATURE SENSOR IS FAULTY THIS MAY CAUSE THE SYSTEM TO THINK IT NEEDS
TO GO THROUGH A DEFROST CYCLE WHEN I ACTUALLY DOESN’T NEED TO.