Yes ,these things can and will drive anyone nuts. I'm not sure if I'm reading in to what you wrote, did you try lighting after it was disconnected that for sure can't work. Try lighting before it gets unpluggedI got it out, tried to light it and the flame won’t stay lit when it gets close to the hole. The igniter was warm when I took it out and multicolored like it had been burning. I did not see any visible cracks.
It’s not that I necessarily have to have the pool heating up now, it’s just that Crud like this eats away at me and I can’t focus on anything else until I figure it out. I was up til 4 am reading and thinking about it. It’s driving me nuts!
Ok. No, I just tried with the igniter unplugged. And of course I just got it reinstalled. So try to light with the igniter out the hole but still plugged in is what your saying? Does it need a flame or will just the lighter spark work? The flame gets put out when I get the lighter working 3-4 inches of the igniter hole.Yes ,these things can and will drive anyone nuts. I'm not sure if I'm reading in to what you wrote, did you try lighting after it was disconnected that for sure can't work. Try lighting before it gets unplugged
Don't try to light the heater like this.
The tub is under pressure. Don't try to start the heater with the igniter out.
Do you have a picture of the heater gas valve?
Check the gas pressure to verify that it's correct before the heater starts and as the heater tries to start.
Yes and yes. The manual shows what looks to be a metal switch, mine is just a little black plastic one, but it is for sure in the in position. 240 confirmed and 120 at the ground / hot wires.The switch on the gas valve is on, right?
You measured 240 volts line-to-line for incoming power?
The MasterTemp uses flame rectification. Read...How A Furnace Flame Sensor Works
A furnace flame sensor works by detecting the presence of a flame within the furnace. The sensor is a short length of thin metallic rod that creates a small current of electricity in order to confirm there is fire burning within the furnace. As the gas valve opens to begin the combustion process, the current is sent out from the sensor in order to detect the presence of heat from a flame.
Heating continues when the sensor detects the flame and all is well with the furnace. However, if the furnace flame sensor does not detect the presence of a flame within 10 seconds of the gas valve opening, it will shut the furnace down.
If the previous gas heater worked and you smell gas you probably have enough gas. It's not hard to check if you have a digital manometer. You can make one with clear tubing, water, and dye. They are amazingly accurate if you want to try this approach just search You Tube for it. Or you can disconnect the drip leg in the gas line to check there's no water. If not have somebody turn the gas line at the other end momentarily. You should hear a good hiss and smell gas immediately. Pressure will be very low and you can stop flow easily with your finger or hand. Pressure at most will only be 1 psi.Just as I was typing in front of the heater I’m getting the ignition lockout 3 blinks again. It goes on until the “service heater” comes on then it goes off