If your outdoor heat pump condensing unit becomes encased in a solid block of ice during the winter, you must take immediate steps to melt the ice and restore proper airflow. First, switch your indoor wall thermostat mode from heating to "Emergency Heat," which turns off the outdoor compressor and engages the indoor auxiliary electric heating strips to keep your house warm while preventing further ice accumulation. Second, inspect the outdoor unit and gently pour lukewarm water—never boiling water—over the frozen coils to accelerate the melting process, avoiding sharp tools that could puncture the delicate copper tubing. Third, check and replace your indoor air filter, and ensure that falling icicles or snow drifts are not blocking the top fan grille or side vents. You can verify that the issue is resolved when the automatic defrost cycle successfully clears all remaining ice and normal heat pump operation resumes.
1 votes
Marked as accepted