1 — Air Conditioner
Normal low-stage cooling operation.
2 — Air Conditioner
Normal high-stage cooling operation.
5 — Air Conditioner
Brown-out protection is disabled by user selection.
6 — Air Conditioner
Brown-out protection is active and actively monitoring incoming line voltage.
16 — Air Conditioner
Communication with the user interface is lost.
25 — Air Conditioner
Missing or invalid model plug on the control board.
31 — Air Conditioner
High-pressure switch tripped.
32 — Air Conditioner
Low-pressure switch or discharge temperature switch tripped.
45 — Air Conditioner
Outdoor unit control board internal hardware fault.
46 — Air Conditioner
Incoming line voltage dropped below 187 V for over 4 seconds.
47 — Air Conditioner
No 230 V sensed at contactor during a cooling call.
53 — Air Conditioner
Outdoor air temperature sensor reading is missing or out of range.
55 — Air Conditioner
Outdoor coil temperature sensor reading is missing or out of range.
56 — Air Conditioner
Improper reading relationship between outdoor coil and outdoor air sensors.
71 — Air Conditioner
Compressor operation lost during low-stage demand.
72 — Air Conditioner
Compressor operation lost during high-stage demand.
73 — Air Conditioner
Compressor voltage detected without a call for compressor operation.
74 — Air Conditioner
No 230 V sensed at compressor when starting.
81 — Air Conditioner
Low-stage thermal cutout occurred in 3 consecutive cycles.
82 — Air Conditioner
High-stage thermal cutout occurred in 3 consecutive cycles.
83 — Air Conditioner
Low-pressure switch tripped in 3 consecutive cycles.
84 — Air Conditioner
High-pressure switch tripped in 3 consecutive cycles.
solid — Air Conditioner
Normal standby operation with no cooling demand.
