Why Does My Heat Pump Keep Going Into Defrost Mode?
BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning provides expert advice on this common question for homeowners in Greater Vancouver. If you need professional service, our licensed technicians are available across the region.
Related Services from BC Wide
BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning provides comprehensive heat pump service across Greater Vancouver, including diagnostic inspections, emergency repairs, scheduled maintenance, and system replacement. Our Red Seal certified technicians service all major brands and carry OEM parts in their vehicles. For emergency service related to this question, call (604) 330-3953.
Answer: Why Does My Heat Pump Keep Going Into Defrost Mode?
A heat pump that enters defrost cycle too frequently indicates an underlying issue. Possible causes include: a defrost control board that is malfunctioning and initiating defrost cycles unnecessarily, a defrost thermostat that is sensing frost when none exists, a dirty outdoor coil that restricts airflow and causes rapid frost buildup, low refrigerant charge causing the coil to run colder than normal, or an outdoor fan that is not running causing the coil to ice up faster.
When to Call a Professional for Help
While understanding the answer to this question is helpful, some situations require professional expertise. If you are uncertain about any step, if the problem recurs, or if you notice any signs of gas odour, carbon monoxide, or electrical hazards, contact BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning immediately. Our licensed technicians across Greater Vancouver can provide expert diagnosis and repair. We recommend professional service for any issue that involves gas, electrical components, or safety-critical systems.
Safety Reminder
If you smell gas, suspect carbon monoxide or believe there is an immediate danger, leave the property and contact emergency services or the appropriate gas emergency authority. Do not remain inside — exit the building immediately and call for help from outside.