Hayward heat pump error code?

Apr 25, 2017
222
Greensboro, NC
Hi all,

I have a Hayward HP21002 heat pump, roughly 11-12 years old. I'm the 2nd owner, we bought the house 2 years ago. It worked well until late last summer when I got an "LP" error code.

According to the user's manual and another troubleshooting document I managed to dig up, this can mean anything from "you need to replace the low pressure switch" to "you have a refrigerant leak" to "your heater is dead and it sucks to be you".

Anyone have any guesses as to what it might be? I'm tempted to gamble $50 to get a new low pressure switch and see if that fixes it...at least that would be cheaper than recharging the refrigerant or having to buy a new heater.
 
Heat pump is like an air conditioner. After 12 years it is probably low on refrigerant. You need to have an AC guy evacuate the system and pressure check it.
 
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