Question about Hayward 116k BTU HeatPro Digital Heat Pump HP21003T
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Posted on Jan 02, 2017
SOURCE: Heat pump will not start
Could be a firmware issue and require a new mother board. Unfortunately, you probably have done all you can on your own. Time to call the local HVAC service person...
Posted on Apr 22, 2010
Follow diagram on the tag. typically low voltage and high voltage volt are diagramed on the tag. Most manufactures send pumps out already for 220. the A and B terminals are for pump wires. and the lines are for the power cord. follow the diagram and you can't go wrong;
The Pool Tech
Posted on Jul 14, 2010
Tips for a great answer:
May 10, 2016 | Aquacal HEAT PUMP 120,000 BTU H135 -
Mar 25, 2013 | Aqua Pro Swimming Pool Heat Pump 125000...
• 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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