How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask poolguy810 Your Own Question
poolguy810, owner - pool and spa service company
Category: Pool and Spa
Satisfied Customers: 1671
Experience:  Servicing pools and all brands of spas for over 28 years.
Type Your Pool and Spa Question Here...
poolguy810 is online now
A new question is answered every 9 seconds

Heater staying on lo and says service

Customer Question

Heater staying on lo and says service
Submitted: 1 month ago.
Category: Pool and Spa
Expert:  Rick replied 1 month ago.

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of you situation.

WHat is the brand and model number of your unit?

Customer: replied 1 month ago.
Hayward model H150fd .Turn it on ,temp comes on ,sounds comes on likes its coming on, then it will say, service and say Lo.
Expert:  Rick replied 1 month ago.

Ok, LO is an open limit string error. This means one of the safety devices in the control circuit is preventing the unit from firing up. Let me know if you want to troubleshoot this. You'll need at least some minimal wiring knowledge to do so.

Related Pool and Spa Questions