I have a Teledyne Laars Lite Heater (model LLD) that I got from uninstalling a cedar hot tub on a construction job I did. I hooked the heater/filter/pump up to a 150 gallon rubber maid tub I use as my homemade jacuzzi and everything had been working fine for the first ten uses
Now when I turn it on, the water pump works fine, water flows through the system but when the heater is getting ready to turn on, it sounds kind of like a geiger counter, a series of light clicks, irregular pattern, keeping going over a minute. If I turn down the temperature, the clicking stops, but if I keep it at max (where I like it for jacuzzi), it keeps clicking.
The bigger problem, however, is when it lights. It still does light, the electronic ignition kicks in, the gas flows, the heater lites, but then it starts clicking loudly, a few, pretty rapid clicks which the last couple of times have resulted in the heater shutting off. It goes through whatever timer cycle it does before it checks temperature again, then repeats the light clicks, the lighting, the louder clicks and the shutting off. First week or so of use, no problem getting my tub to 104 degrees in about 30 minutes, now it heats the water slightly from the brief turn ons, but won't stay on long enough to heat the water over 75 degrees.
First, anyone know what is wrong and what part(s) I could replace to make the world good again?
Second, I wouldn't mind bypassing the temperature control on the panel and controlling the temperature manually. I get that's more effort and I'd need to be careful, but Ihave roughly 100 gallons of water in my tub and it heats up in almost no time. I don't use it on any timer mode and I don't leave it running. I heat it, use it, and turn it off. So is there an easy way to bypass whatever things are clicking and being a pain and simply tell it to ignite and stay on till the water is hot?
The only part of that I wondered about is, does the heater need to cycle on and off to not get too hot? I have a 1/2 hp pump with 1 1/2" lines pumping water through, so would letting the heater stay on till the water is hot enough work or would I need to turn it on for a few minutes, turn it off, turn it on, turn it off until it's at the right temperature?
Any thoughts/suggestions appreciated, sorry the picture isn't so good, but just in case that helps clarify what I actually have and what's going on ...