 Heater fan lever, What is the contact path? |
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| steuspeed |
 Jan 9 2015, 01:12 PM
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#1
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Senior Member  Group: Members Posts: 1,006 Joined: 12-July 11 From: Portland, Oregon Member No.: 13,308 Region Association: Pacific Northwest  |
So the grounding wire from the relay connects to the plastic part with the contact nub on it. When you pull the lever the nub contacts the lever. the lever is isolated by two plastic discs. Does the ground go through the bolt that holds the whole assembly together? (IMG:style_emoticons/default/confused24.gif)
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| Dave_Darling |
Jan 9 2015, 02:24 PM
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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I think I recall that is how it grounds.
--DD |
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| steuspeed |
Mar 25 2015, 03:53 PM
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#3
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Senior Member Group: Members Posts: 1,006 Joined: 12-July 11 From: Portland, Oregon Member No.: 13,308 Region Association: Pacific Northwest |
My heater fan was still intermittent after I took it apart. As near as I can tell, the circuit grounds when these two surfaces make contact. I can see a tiny spark when they touch, and relay 55 switches to run the heater fan. Can anyone confirm this is how it is supposed to work? I polished the surfaces with my dremel wire brush attachment. It seemed to help, but it does not take much movement for it not to work. Any comments, suggestions or help appreciated.
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| theleschyouknow |
Mar 25 2015, 07:00 PM
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#4
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Senior Member Group: Members Posts: 523 Joined: 4-June 13 From: Texas Member No.: 15,967 Region Association: None |
can't help with the electrical side
so it's either 1 or 0/on or off, huh? when I get too warm I move the lever halfway down I guess it's only psychosomatically that I feel like this cuts the heat factor in half - isn't the human brain awesome! (IMG:style_emoticons/default/laugh.gif) |
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| steuspeed |
Mar 25 2015, 07:52 PM
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#5
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Senior Member Group: Members Posts: 1,006 Joined: 12-July 11 From: Portland, Oregon Member No.: 13,308 Region Association: Pacific Northwest |
QUOTE(theleschyouknow @ Mar 25 2015, 06:00 PM)  can't help with the electrical side so it's either 1 or 0/on or off, huh? when I get too warm I move the lever halfway down I guess it's only psychosomatically that I feel like this cuts the heat factor in half - isn't the human brain awesome! (IMG:style_emoticons/default/laugh.gif) That would be fan off and heat exchange flapper valves half open. |
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| Spoke |
Mar 25 2015, 08:07 PM
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#6
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Jerry Group: Members Posts: 6,978 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None
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QUOTE(steuspeed @ Mar 25 2015, 05:53 PM) My heater fan was still intermittent after I took it apart. As near as I can tell, the circuit grounds when these two surfaces make contact. I can see a tiny spark when they touch, and relay 55 switches to run the heater fan. Can anyone confirm this is how it is supposed to work? I polished the surfaces with my dremel wire brush attachment. It seemed to help, but it does not take much movement for it not to work. Any comments, suggestions or help appreciated. You are correct with the contact on the handle. I had such a problem that I ended up running an extra wire to complete the circuit. I just couldn't get the handle itself to make the contact. |
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| theleschyouknow |
Mar 25 2015, 08:30 PM
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#7
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Senior Member Group: Members Posts: 523 Joined: 4-June 13 From: Texas Member No.: 15,967 Region Association: None |
QUOTE(steuspeed @ Mar 25 2015, 08:52 PM) QUOTE(theleschyouknow @ Mar 25 2015, 06:00 PM) can't help with the electrical side so it's either 1 or 0/on or off, huh? when I get too warm I move the lever halfway down I guess it's only psychosomatically that I feel like this cuts the heat factor in half - isn't the human brain awesome! (IMG:style_emoticons/default/laugh.gif) That would be fan off and heat exchange flapper valves half open. ah so. makes perfect sense now that you explained it to me (IMG:style_emoticons/default/biggrin.gif) |
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| steuspeed |
Mar 25 2015, 08:41 PM
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#8
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Senior Member Group: Members Posts: 1,006 Joined: 12-July 11 From: Portland, Oregon Member No.: 13,308 Region Association: Pacific Northwest |
QUOTE(Spoke @ Mar 25 2015, 07:07 PM) QUOTE(steuspeed @ Mar 25 2015, 05:53 PM) My heater fan was still intermittent after I took it apart. As near as I can tell, the circuit grounds when these two surfaces make contact. I can see a tiny spark when they touch, and relay 55 switches to run the heater fan. Can anyone confirm this is how it is supposed to work? I polished the surfaces with my dremel wire brush attachment. It seemed to help, but it does not take much movement for it not to work. Any comments, suggestions or help appreciated. You are correct with the contact on the handle. I had such a problem that I ended up running an extra wire to complete the circuit. I just couldn't get the handle itself to make the contact. It's hard to believe this is the circuit design when the nub and swiper plate part make much more sense. You would think there would be another nub contacting another plate as the lever was moved. |
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