Low limit sensor on Hudson River Chatham pellet stove does it come NO or NC?

[Chuckbas]

Does the low limit sensor on a Hudson River Chatham pellet stove come NO or NC?

 

[Whitenuckler]

Does the low limit sensor on a Hudson River Chatham pellet stove come NO or NC?

Is this the part? 45 EF-013 TEMPERATURE SENSOR 160F?

"The typical low limit switch is Closed on Rise (or Normally Open, N/O) and the trip point is 120 or 140 degrees, thus the switch closes the circuit at these temperatures" I copied that from some web site.

If you can get at the wires you could disconnect them and use a meter and watch it close as the stove heats up.

I looked at the schematic and it appears to be called "Convection Temperature Sensor" there and based on the wiring must be NO.

 

[Chuckbas]

Is this the part? 45 EF-013 TEMPERATURE SENSOR 160F?

"The typical low limit switch is Closed on Rise (or Normally Open, N/O) and the trip point is 120 or 140 degrees, thus the switch closes the circuit at these temperatures" I copied that from some web site.

If you can get at the wires you could disconnect them and use a meter and watch it close as the stove heats up.

I looked at the schematic and it appears to be called "Convection Temperature Sensor" there and based on the wiring must be NO.

Thanks Whiteknuckler, This is my delemna. Stove was shutting down after 10 to 15 minutes of burning. After research I bypassed low limit switch on the exhaust housing. Everything worked fine. Ordered a new switch to replace the EC-001. Replaced it and now it is shutting down again. I bench tested the old sensor with heat and multimeter it did not close after the click. I then tested the new sensor and it tested closed at first and then after heat it clicked and then tested open. The new sensor is an off brand “pellet head” and explicitly said it replaces the EC-001. It seems to make sense that the sensor should come N/O and when heated up it closes to send a signal to control board to go to run mode. Any suggestions would be appreciated. Thanks again

 

[johneh]

And that's why you do not buy off-brand aftermarket electrical parts that
are non-returnable. Pellet Head should replace the switch with the proper one
Envrio uses the same switch you can get it shipped from friendly fires in Ontario Canada
and right now buying in American dollars saves you about 40 %

 

[Chuckbas]

Thanks Johneh. I will do that.

 

[Whitenuckler]

Thanks Whiteknuckler, This is my delemna. Stove was shutting down after 10 to 15 minutes of burning. After research I bypassed low limit switch on the exhaust housing. Everything worked fine. Ordered a new switch to replace the EC-001. Replaced it and now it is shutting down again. I bench tested the old sensor with heat and multimeter it did not close after the click. I then tested the new sensor and it tested closed at first and then after heat it clicked and then tested open. The new sensor is an off brand “pellet head” and explicitly said it replaces the EC-001. It seems to make sense that the sensor should come N/O and when heated up it closes to send a signal to control board to go to run mode. Any suggestions would be appreciated. Thanks again

Hi - If I remember the wiring diagram correctly the switch turns on the room convection blower after the stove pipe warms up. Does it do that, and does the fan stay running. I imagine if the switch were to open up again after being closed the stove might trip out as it would think the fire went out. If the stove was getting to hot you could trip on the high limit. When you say shutting down is it a trip out with fault code or just stopping the pellet feed? The switch operation should be solid. Open at room temp, then close at 140F (or close to that)and then STAY closed for the duration of the burn. It is sounding like the first switch works and the second does not indicating the switch was not the problem itself?

 

[Whitenuckler]

Hi - If I remember the wiring diagram correctly the switch turns on the room convection blower after the stove pipe warms up. Does it do that, and does the fan stay running. I imagine if the switch were to open up again after being closed the stove might trip out as it would think the fire went out. If the stove was getting to hot you could trip on the high limit. When you say shutting down is it a trip out with fault code or just stopping the pellet feed? The switch operation should be solid. Open at room temp, then close at 140F (or close to that)and then STAY closed for the duration of the burn. It is sounding like the first switch works and the second does not indicating the switch was not the problem itself?

Hi - I believe I had been thinking you had a problem with another switch. I see you mentioned the PN now. EC-001. That is low limit switch mounted on the exhaust blower. It should be NO as well and set for a lower temp 120F. It checks to make sure the fire is going and producing heat, otherwise it will shut the pellet feed off (I'm not sure if you get an actual fault) Because to jumper it and it works OK, and it tests OK on the bench you could have a bad connection to your switch stabs

 

[Ssyko]

By a 100 degree it will turn on quicker and shut off later get more heat out of the stove 😎