COOLING COIL FREEZE-UP: The indoor coil develops either a coating of thick, white frost or thick ice. May only freeze a portion of the indoor coil or the entire coil. Ice may extend from the indoor coil all the way to the compressor in the outdoor unit. Generally causes a loss of airflow from...

Gas Furnace Re: Can't Keep-Up When It's Cold / Low Heat A gas furnace operating correctly typically has no problem maintaining the space temperature even when it is cold outside. Qty Possible Causes (From Most to Least Likely): Dirty Air Filter Clogged Indoor Coil ...

Heat Pump Re: No Heat When a customer reports "No Heat' with a heat pump, that generally indicates a problem with the indoor blower or electric heaters. ► There may be a problem with the heat pump itself, but the auxiliary heaters should cycle on to keep the temperature within 1 degree of...

Heat Pump: Heating Re: High Discharge Pressure / High Head Pressure As the system runs in the heating mode, the discharge pressure exceeds the normal operating pressure. R22 System Normal Head Pressure = 175 - 250 psig High Head Pressure = Above 275 psig R410A System Normal Head...

Package Heat Pump Re: No Heat When a customer reports "No Heat' with a heat pump, that generally indicates a problem with the indoor blower or electric heaters. ► There may be a problem with the heat pump itself, but the auxiliary heaters should cycle on to keep the temperature within 1...