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What should you do if the pilot light won't stay lit on a Teledyne Laars pool heater and the pilot generator registers up 500 MV?
Wiki User
∙ 13y ago
From what I have read, 500mV is not enough to keep the pilot light lit. Here is what I read on a different site:
"You can check if this is the problem by measuring the voltage on the wires coming back from the pilot. When you have the red switch depressed, check the voltage (should be about 200mV). If there's no voltage, then change the thermocouple.
The thermocouple will generate up to 750mV in a pilot flame. If it falls below 550mV it should kill the fuel source."
Hope this helps.
Wiki User
∙ 13y ago
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What if the pilot on your teledyne laars epg 250 pool heater will not stay lit and you have just replaced the pilot generator?
Check that you are getting voltage from the thermocouple. You should see about 600 millivolts.
Is the pilot light bad when it produces 200mv at the maximum temperature setting but won't start the burners on a Teledyne pool heater?
I was told by Teledyne Laars that your pilot generator needs to produce at least 500mv to open the gas valve. Mine makes 350mv and will not open the valve. Hmm, I think that should be nearer to 600 mv - 700 mv.
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Aah. It's gas. The 750mv makes more sense now. I figure you're trying to hook up the gas control valve. You should have a supply, some sort of controller, and the valve. If you wire them in series, they should work. However, I'm running off very little information. If I knew what exactly you had (As in the electric devices you are trying to wire) I could go into more detail.
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What could be the problem if a Teledyne-Laars pool heater's pilot light was lit with no problem the valve is 'ON' but the burner does not start up?
The database did not find the text of a page that it should have found, named "What could be the problem if a Teledyne-Laars pool heater's pilot light was lit with no problem the valve is 'ON' but the burner does not start up". This is usually caused by following an outdated diff or history link to a page that has been deleted. If this is not the case, you may have found a bug in the software. Please report this to an administrator, making note of the URL. On the inside of the heater cover, and within the documentation shipped with the heater, there should be a diagram of the control circuit. These heaters will not operate if the pump is off (pressure switch), if the "fireman" switch is off (a switch generally inside the pump timer that disables the heater about 15 minutes prior to turning off the pump), nor if both of two additional high temperature limit switches are activated (models will vary). The fact that the pilot is lit indicates that the pilot generator is OK. If you can turn the burner on by shorting the control circuit manually (using a jumper wire) the problem is in one of the safety limit switches or in the thermostat itself. Also, when was the last time the filter was cleaned? k
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