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Johnson A419 controller
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Topic: Johnson A419 controller (Read 2541 times)
Cabo
Full Member
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Posts: 149
OWF Brand: P & M
OWF Model: Optimizer 250
Johnson A419 controller
«
on:
February 04, 2019, 04:00:01 AM »
I'm running a 8 degree differential (195-187) but have noticed a lag on the fan kicking on. Yesterday after cleaning, I turned the switch back on and the fan didn't come on. I checked and it read 185 fan didn't kick on until 184. Been running fine but wondering if the probe could go bad or the controller? Should say it's 5 years old so it doesn't owe me anything.
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slimjim
Full Member
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Posts: 158
OWF Brand: Wood Doctor / HeatMaster
OWF Model: 14,000. / G 200 and G 400
Southern Maine
Re: Johnson A419 controller
«
Reply #1 on:
February 04, 2019, 04:01:37 AM »
That’s odd, maybe just a quirk but keep an eye on it, if you need one I have several here.
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Wood boiler sales, service and installation for the Northeastern USA.
E Yoder
Hero Member
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Posts: 1296
OWF Brand: HeatMaster
OWF Model: GS 100
Re: Johnson A419 controller
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Reply #2 on:
February 04, 2019, 06:12:32 AM »
Could also check for loose connections on the wires or maybe the relay in the control is going bad.
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HeatMaster dealer serving southwest VA.
www.heatmasterfurnace.com
RSI
Hero Member
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Posts: 3100
OWF Brand: HeatMaster
OWF Model: G200 and B250
Re: Johnson A419 controller
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Reply #3 on:
February 04, 2019, 07:29:52 AM »
I would check the ASD setting and make sure it is set to 0.
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Cabo
Full Member
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Posts: 149
OWF Brand: P & M
OWF Model: Optimizer 250
Re: Johnson A419 controller
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Reply #4 on:
February 04, 2019, 04:51:52 PM »
Thanks for the replies. I did check the ASD and it was at 1 so i did go back to 0 with it. Thanks Richard, I'll grab one and get it on the shelf in case it becomes an issue. Never had any problems with one and we run them on our sap pumps and I have 2 on my radiant zones.
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Johnson A419 controller