Building Python Programs, 1st edition
by Stuart Reges, Marty Stepp, and Allison Obourn
Authors' official companion web site
Authors' official companion web site
| Light pattern | Meaning | |---------------|---------| | Green ON steady | Normal operation | | Green blinking | Timer set / communication | | Orange/Red steady | Standby or defrost (heat mode) | | Blinking error code (e.g., 2 blinks, pause) | Specific fault – see service manual |