Question about Hayward 116k HeatPro Heat Pump HP3100
My hayward heatpro pool heater is displaying a P5 code. what does this mean?
The code is "PS" for Pressure Switch and means there is insufficient pressure to operate (low flow) or the switch itself is bad.
Posted on Apr 22, 2010
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I believe your code is PS, not P5, and it means the pressure switch is open.
That unit will not fire until you resolve the pressure switch issue; either the flow is reduced too low and the pump/filter system needs to be thoroughly cleaned or the switch or control board has failed and need to be repaired.
Start with a cleaning of all baskets and filter to see if the light clears and the heater works; if not look at replacing the pressure switch. It is not uncommon for the switches to fail but check it with a meter set to ohms if you can. Power off the heater first and pull one of the wire leads off. Put the probes on the terminals with the pump running and see if you have a circuit. If not, replace it. If the switch tests fine the problem is in the control board and it will need to be replaced.
If this answer does not fix your problem, please comment with additional details prior to rating the answer. You may also contact me thru our website at www.arrowpools.net. Positive feedback is appreciated once your problem is solved!
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