On 11 Jan 2004 12:03:07 -0800, jim rozen
wrote:

In article , Blake Loyd says...

... remove the flame sensor, disconnect it from
the controller at the controller, attach meter to lead end disconnected from
controller and base of sensor(ground), heat sensor with a propane torch to
see if it produces the 0.8uA minimum through the lead.
If it doesn't, disconnect the lead from the sensor and test the sensor
again to see if it produces the 0.8uA minimum. If it does the lead is bad.
If it doesn't the sensor is bad.

In this case, is the flame sensor a thermocouple?

Jim

No..the flame rod is a device that puts 100 or so volts on the flame
rod, which is exposed to the flame, and uses flame rectification to
convert this to dc and then to ground. It senses the ground path

Gunner

================================================= =
please reply to:
JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com
================================================= =

"Gun Control, the theory that a 110lb grandmother should
fist fight a 250lb 19yr old criminal"