I am new to this forum as joined today in view of seeking help for my inground spa with a Lars LT propane heater.
I have had a some repairs done by pool company to the haeter and still I am having trouble when I come to use it weeks later.
This is what was done previously the main blower motor has been replaced as was faulty, then the pressure switch replaced, then the water temp thermostat replaced, which made the unit work ok until now.
Now when I switch on at the control panel for heat to the spa, the burner shows a SERVICE and HI LIMIT light on and nothing works on the heater.
I need to know if I can check some things my self as I have been constantly paying for call out and unit then malfunctions after using it once or twice.
I have electronic experience and can use multimeters to check volts and check components for short/open ccts.
Hope someone may be of help to my problem solving my heater.