Back: Heat Pumps

Faults & Diagnosis

Heat Pumps

Heat pump has high electricity consumption: how to perform a proper diagnosis

Heat Pumps

The heat pump runs continuously without stopping: what could be the problem

Heat Pumps

Electric heater not activating: backup heater diagnosis

Heat Pumps

High discharge temperature alarm: Causes and diagnostic logic

Heat Pumps

Defrost fault in a heat pump: when defrost does not start or does not complete

Heat Pumps

Inverter fault in a heat pump: what it means and which components to check

Heat Pumps

Communication fault between indoor and outdoor unit: how to diagnose

Heat Pumps

Sensor fault in heat pump: how to distinguish a sensor failure from a real problem

Heat Pumps

Heat pump outdoor fan failure: symptoms and diagnosis

Heat Pumps

Frequent heat pump start-stops: why they happen and what to check

Heat Pumps

The heat pump is not reaching the supply temperature: potential causes

Heat Pumps

Flow switch alarm while the circulator is running: how to identify the cause

Heat Pumps

The compressor does not start but the controller sends a command: what to check

Heat Pumps

Low pressure alarm on a heat pump: primary causes

Heat Pumps

High pressure alarm in a heat pump: what could be causing it

Heat Pumps

Low flow alarm on a heat pump: causes and correct diagnosis

Heat Pumps

Heat pump fails to start: organized check from basic to complex