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Carrier Service Manuals & Error Codes
70Service Manuals
33Error Codes
6Appliance Types
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Top Error Codes for Carrier
CodeTypeDescription
2Air ConditionerSystem Pressure Trip — Discharge pressure out of limits (CADM Yellow ALERT...3Air ConditionerShort Cycling — Compressor is running only briefly (four consecutive cycles of...4Air ConditionerLocked Rotor condition detected by CADM.5Air ConditionerOpen Circuit — Compressor power circuit is open.6Air ConditionerMissing Phase — One phase of power to the compressor is missing.7Air ConditionerReverse Phase — Compressor running backward due to supply phase reversal.8Air ConditionerWelded Contactor — Compressor always runs because contactor has failed closed.9Air ConditionerLow Voltage — Control circuit voltage is below 18VAC.11FurnaceNo previous code stored; stored status codes are erased when power (115VAC or...12FurnaceBlower runs for 90 seconds after power up if unit is powered up during a call...13FurnaceLimit circuit lockout occurs if the limit, draft safeguard, flame rollout, or...14FurnaceIgnition lockout; system failed to ignite gas and prove flame in 4 attempts;...21FurnaceGas heating lockout; control will NOT auto-reset.22FurnaceAbnormal flame-proving signal; flame is proved while gas valve is de-energized....23FurnacePressure switch did not open.