Trouble shooting Teledyne Laars Series One Pool heater.

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Old 04-30-14, 07:08 AM
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Trouble shooting Teledyne Laars Series One Pool heater.

I originally had this post in the Garden area, but since this is gas heater I though this area would have more relevant viewers...hope that is ok.

I've used this forum to do some diagnostics but still can not come up with what the resolution is. I've got a Teledyne Laars Series One gas heater for the pool. It is not electric.
At the end of the season last year I shut it down, drained the water and disconnected the tubing to the pressure switch. Now that "spring" is here, I'm starting it back up, but have run into issues.
The issue:
I'm able to light the pilot ok and it continues to burn but the furnace will not light up.
Things I've done:
- Turned the On switch.....on!
- Turned up the thermostat
- Checked the pressure switch for continuity. (open when the pump is off and closed when the pump is on)
- By-passed the pressure switch just for added confirmation
- Tested the on/off switch
- Tested the Thermostat
- By-passed the on/off switch and Thermostat.
- Tested the thermo-pile/thermocoupler. I get a reading of 605 mA
I'm not sure what other tests I can do. I don't think there are any other safety features that would prevent it from firing up. The last thing would be the gas valve, but I don't know how to test that.
Any help would be greatly appreciated!
Thanks
Tim.
 
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Old 04-30-14, 07:36 PM
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This may seem like a silly question but one I have to ask: Have you made sure the gas valve is turned to "on" & not still on "pilot"?
 
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