Question about Pool & Spa
When we turn on the heat pump LP flashes and we cannot get it to work.
THIS IS A LOW PRESSURE CODE PROBABLY LOW PRESSURE SWITCH THE ONLY OTHER TIME THIS COMES ON IF ITS TOO COLD OUT SIDE
Posted on Jun 20, 2009
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Posted on Jan 02, 2017
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• The low-pressure switch senses the refrigerant pressure in the sealed refrigeration system to protect
against certain conditions that could be detrimental to compressor life. The switch turns the heat
pump off in the event of loss of refrigerant, fan motor failure, evaporator freeze-up, or airflow
blockage. The heat pump will automatically reset the switch after the system pressure rises to the
normal operating pressure. The display will show "LP", if this switch is tripped.
For more info, look at page 7 on this manual:
Either you need to defrost the coils, clean the air-flow chamber, get a new air-flow switch or you are running low on refridgerant.
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