York Air Handler: JHE
Re: Mitigation Control Boad - Status Codes / Fault Codes
This air handler uses an A2L refrigerant and requires a Mitigation Board and Refrigerant Sensor.
The table below describes the LED displays for status and fault codes.
A "lockout" can be Reset by cycling power to the air handler.
Status & Fault Codes:
| LED1 | Description |
| OFF | No power to control |
| 2sec On/Off | Normal Operation |
| 0.5sec On/Off | Test mode |
| ON | Control failure |
| 2 Flash | Refrigerant Detected |
| 3 Flash | Sensor Failure |
| 4 Flash | Sensor lost communication |