Trane 5WCZ5036A1 MCB 3 Flash: Active refrigerant leak or sensor failure alarm
The Trane Impack packaged-unit mitigation control board table identifies green LED 3 flash with amber on as active refrigerant leak, sensor communication error, sensor error, or sensor failure depending on software version.
Trane 5WCZ5036A1 MCB 4 Flash: Past refrigerant detected alarm
The Trane Impack packaged-unit mitigation control board table identifies green LED 4 flash with amber on as a past refrigerant detected alarm.
Trane 5WCZ5036A1 MCB 5-7 Flash: Past sensor communication or sensor error
The Trane Impack packaged-unit mitigation control board table identifies green LED 5, 6, or 7 flash with amber on as past sensor communication or sensor error conditions.
Trane 5WCZ5024A1 MCB Slow Flash: Normal operation or no active alarm
The Trane Impack packaged-unit mitigation control board table identifies slow green flash with amber on as normal operation on later software or no active alarm on earlier software.
Trane 5WCZ5024A1 MCB 2 Flash: Active sensor communication error
The Trane Impack packaged-unit mitigation control board table identifies green LED 2 flash with amber on as an active sensor communication error on software V9.1 and later.
Trane 5WCZ5024A1 MCB 3 Flash: Active refrigerant leak or sensor failure alarm
The Trane Impack packaged-unit mitigation control board table identifies green LED 3 flash with amber on as active refrigerant leak, sensor communication error, sensor error, or sensor failure depending on software version.
Trane 5WCZ5024A1 MCB 4 Flash: Past refrigerant detected alarm
The Trane Impack packaged-unit mitigation control board table identifies green LED 4 flash with amber on as a past refrigerant detected alarm.
Trane 5WCZ5024A1 MCB 5-7 Flash: Past sensor communication or sensor error
The Trane Impack packaged-unit mitigation control board table identifies green LED 5, 6, or 7 flash with amber on as past sensor communication or sensor error conditions.
Trane 5WCZ5030A1 MCB Slow Flash: Normal operation or no active alarm
The Trane Impack packaged-unit mitigation control board table identifies slow green flash with amber on as normal operation on later software or no active alarm on earlier software.
Trane DHK300A(3,4,W)*(0,A)(L,M,H)***4 Ignition 6 Flash: Flame rollout circuit open
The Trane Precedent gas heat fault-code table identifies 6 flash as flame rollout circuit open, with restricted combustion airflow, flue debris, heat exchanger, gas-orifice alignment, combustion motor, or turbulator concerns listed as possible issues.