All,
Thanks in advance for whatever help you can give.
Bottom line: My Laars EG-125 gas heater will ignite only briefly before shutting off. The heater light is on, it has a new pressure switch, new circuit board, new 2-speed pump, I have removed the filter and cleaned the jets.
The two ways I can get it to turn on are:
- Flip it off and then back on
- "Bump" the heater or heater pipes with my hand These two methods will make it fire for about 3-10 seconds before it turns back off.
What could it be? Where do I start?
Here's some additional background info if you are interested:
It is a 500 gal Catalina Boca Grande spa with a brand new Dura-glass
2-speed, 240 volt pump. I just replaced the orginal RC-4 circuit board with a BL-40 universal board. The pump starts and runs fine. The problem is the heater.My heater is a Laars EG-125 with a recently replaced pressure switch. After the pressure switch was replaced the heater worked fine for a couple of hours. Now it will only work (and even then only briefly) if I hit it with my hand or flip the on/off switch.
Thinking that maybe there was not enough water pressure to make it fire, I removed the filter and removed all the jet nozzles to make sure they were not blocked. They were partially blocked with rust particles so I cleaned them out. I replaced the jet nozzles back in their places and fired up the spa. It then heated to 110 degrees with thermostat turned all the way up! I turned it off and then restarted it the next day. It now will only ignite if I turn the heater off and then back on or hit it with my hand. It only ignites for 2-5 seconds before shutting down again.