New answers tagged heat-pump
Your list is pretty good. Check/clean flame, filters, condensation drain and coils. I would also listen for abnormal noise and check both cooling and heating performance by measuring the indoor and outdoor temperature splits. I would not go measuring capacitors unless I suspected a failure.
There are a multitude of blowers out there. The outside breaker you mention likely has no relation to this problem. The pipes are indeed freezing due to too little airflow. Here are the most likely causes and solutions for this: Assuming you have one of the most common PSC types (and not some other type like an ECM, slip induction, etc), then a weak run ...
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