HVACDIAGNOSTIC
Problem Cluster

Capacitor Problems

AC capacitor bad, humming but not starting, fan won't start, hard start problems. Converts extremely well for repair searches.

Symptoms in This Cluster

AC System Won't Turn On

The entire HVAC system is unresponsive when you try to start it.

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Condition Variations
AC Has No Power at AllOutdoor Unit Not StartingAC Not Turning On After Winter

Noisy Outdoor Condenser

Loud buzzing, rattling, or clicking from the outdoor HVAC unit.

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Condition Variations
Noisy Outdoor Condenser but Unit RunningNoisy Outdoor Condenser in Extreme HeatNoisy Outdoor Condenser Intermittent

HVAC Tripping Circuit Breaker

Your heating or cooling system causes the electrical panel to trip frequently.

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Condition Variations
HVAC Tripping Breaker After Power OutageHVAC Tripping Breaker in Extreme HeatHVAC Tripping Breaker Intermittent

Strange Noises from HVAC

Banging, whistling, or grinding sounds coming from your heating or cooling system.

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Condition Variations
Strange Noises from HVAC but Unit RunningStrange Noises from HVAC Intermittent

HVAC Clunking Sound

A heavy, irregular sound coming from the metal casing of your indoor or outdoor unit.

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Burning Smell from HVAC

The scent of burning plastic or electricity when the system is running.

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Related Clusters

AC Not Turning OnOutside Unit Not RunningAC Tripping Breaker
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