The ceiling cassettes and floor mount units display their error codes in the form of blinking lights. You can review the attached PDF on how to decode the lights to find out what error code you have.
In order to properly decode the error code you're getting, you'll need to pay attention to two things:
- The first thing is the status of the the timer light, is it off, on or flashing. Depending on the behaviour of the timer light, you know into which section of the chart to look at.
- The second thing is the number of times the operation light is flashing. That will point you to the correct error code in the chart.
It may be confusing since the operation light will flash alternatively with the timer light, but what's important is to count the number of times the operation light is flashing and match that number with the behaviour of the timer light (on, off or flashing) and you should be able to figure out the error code you're getting on your unit.