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Error code reference
Carrier Air Conditioner Error Code 2
System Pressure Trip: Discharge pressure out of limits (CADM Yellow ALERT Flash Code 2).
SourceCarrier 569J Air Conditioner - Service Manual: Installation & Start-UpTable 12, page 40
Diagnostic procedure
The full 2 procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check for high head pressure, dirty/blocked/damaged condenser coil, condenser fan not running; if low pressure switch is open check for low refrigerant charge, evaporator blower not running, frozen evaporator coil, faulty metering device, dirty condenser coil, or liquid line restriction.
SourceCarrier 569J Air Conditioner - Service Manual: Installation & Start-UpTable 12, page 40
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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