Keystoker Koker Not Getting Hot

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moparcolt
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Post by moparcolt » Thu. Dec. 08, 2016 9:00 pm

Not sure what the issue is, but, my status is calling for heat, and the red LED is on, but the feed motor isn't running continuouslyrics like the manual says it should.
What should I check?

Feed motor does run when the timer triggers it on. Does something else turn it on when stay calls for heat?


 
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CoalisCoolxWarm
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Other Heating: Oil Boiler

Post by CoalisCoolxWarm » Thu. Dec. 08, 2016 9:54 pm

Check on your boiler controls, probably on your triple aquastat for two screws labeled "T T"

If you use a short piece of insulated wire to just touch them both at the same time (making a jumper), see if your stoker motor kicks on. If it does, your zone control or thermostat isn't getting a signal to the boiler.

What model do you have?

 
moparcolt
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Post by moparcolt » Thu. Dec. 08, 2016 11:33 pm

Well, I'm not exactly sure which model it is, but, it's not a boiler, just a forced air furnace.

If I jump the contacts on the timer it runs continuously otherwise it cycles and isn't getting hot enough right now.

 
titleist1
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Post by titleist1 » Fri. Dec. 09, 2016 8:53 am

The red LED you say is on, is that on the 'stat or the koker? Have you checked your 'stat wires to the controls? Friend had a broken wire between his 'stat and the control box of his Harman at last years start up that had him scratching his head for a day. Worked on the timer but not the stat, went over to help and we looked up and saw the broken 'stat wire! Start with the easy test & checks and hope its one of those easy things!

 
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CoalisCoolxWarm
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Other Heating: Oil Boiler

Post by CoalisCoolxWarm » Fri. Dec. 09, 2016 8:55 am

What kind of controls do you have? I have a boiler, but if you can get a pic of your furnace control that you're asking about, it's likely myself or someone here can help.

At minimum, please get your model number, since they often come with a "standard" set of controls.

Sorry to miss your reply last night, I hope you and your family made it through okay ;)

 
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McGiever
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Post by McGiever » Fri. Dec. 09, 2016 8:55 am

you need a thermostat. ;)

 
moparcolt
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Post by moparcolt » Fri. Dec. 09, 2016 9:24 pm

It's a koker 160 I think and the controls are Taco 501 a 1 Zone switching relay


 
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McGiever
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Post by McGiever » Fri. Dec. 09, 2016 9:36 pm

moparcolt wrote:It's a koker 160 I think and the controls are Taco 501 a 1 Zone switching relay
Temporaraily touch a jumper wire across both tt thermostat terminals in the 501.
If that fires it then look at why t'stat is not working. :idea:

 
moparcolt
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Post by moparcolt » Fri. Dec. 09, 2016 9:44 pm

Didn't do anything. The t-state is pulling in the relay, but the auger motor isn't kicking on when it is calling for heat as I understand it is supposed to

 
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CoalisCoolxWarm
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Post by CoalisCoolxWarm » Fri. Dec. 09, 2016 10:00 pm

moparcolt wrote:Didn't do anything. The t-state is pulling in the relay, but the auger motor isn't kicking on when it is calling for heat as I understand it is supposed to
There should be another TT, different than where the thermostat comes in, right? Jumper them.

A zone controller takes thermostat TT, does something, and also sends TT to the furnace. The second set is the ones you want to jumper.

The closest TT terminals to the furnace are the ones you want. If that powers your stoker motor, the fault is on the Tstat or zone controller side.

If your stoker still doesn't fire, then the problem is a disconnected wire or bad connection between the timer and your stoker motor. You said the timer DOES fire the stoker, right?

 
moparcolt
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Post by moparcolt » Fri. Dec. 09, 2016 10:13 pm

The timer does start the stoker/auger motor, but there is no other TT connection.
There is a normally open contact on the bottom s terminal strip that I see on the schematic is for boiler TT but mine has nothing connected there and nothing happens if I jump it.

 
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McGiever
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Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
Other Heating: Ground Source Heat Pump and some Solar

Post by McGiever » Fri. Dec. 09, 2016 11:36 pm

It takes 24 volts for the thermostat...the 501 has a 120-24 volt transformer.
If wall stat doesn't work you may of blown a fuse in the 501...check for the 24 volts because that is what starts the stoker relay in the 501.

 
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CoalisCoolxWarm
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Coal Size/Type: Anthracite Buckwheat
Other Heating: Oil Boiler

Post by CoalisCoolxWarm » Fri. Dec. 09, 2016 11:38 pm

It would really help to get a pic of your Timer and its wiring inside.

Until that time, what do you use to control the blower on the furnace? I don't know your model...at all...but it's common to have a control that has a temperature setting to control when to turn on/off your blower. A dial with a couple of adjustable slide pins in it?

IF you have one of those, check to see what the temp reads. If it is reading too high, it (should?) shut down the feed, or at least the blower.

It would be really helpful if someone familiar with his furnace could jump in here, before I maybe talk about controls he doesn't have ;) {edit: Thanks, McGiever! }

 
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McGiever
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Hand Fed Coal Boiler: BUCKET A DAY water heater
Hand Fed Coal Stove: Warm Morning 414A
Coal Size/Type: PEA,NUT,STOVE /ANTHRACITE
Other Heating: Ground Source Heat Pump and some Solar

Post by McGiever » Fri. Dec. 09, 2016 11:43 pm

Here's straight from Taco:
External Diagnostics
It’s no longer necessary to open the box
to troubleshoot the system. Externally
visible lights show full functionality of the
switching relay. The green light should
always be on, indicating that power is
connected. When the thermostat calls
for heat, both the appropriate circulator STOKER MOTOR
and red indicating light is energized.
Can this operation be confirmed to be working?

 
moparcolt
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Post by moparcolt » Sat. Dec. 10, 2016 1:09 am

The green light is on, and the red light is also on, because the t-state is calling for heat.

So yes I can confirm that, but motor is not on unless the timer turns ito on.


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