No blower power 342

Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
Doing my boat projects and hit the blower switch and no blowers. Worked fine 2-3 weeks ago. Power at switch. Breakers ok. No power at the blowers. Blowers work fine off direct battery power. Neither the helm or power panel switch turns them on. Both switches light up though. I've messed with nothing in the engine room since they last worked. Any thoughts? I checked the helm switch and it switches fine with a meter on it.

2003 342FV "Black Diamond", PC BYC, Holland, MI
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Comments

  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
    I did pull the engine room fire ex to get it serviced. Would the blowers disable with that circuit open?

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • l-skynyrdl-skynyrd California DeltaPosts: 134Member ✭✭✭
    BD...I had a problem with a fuel pump not working and it turned out to be corrosion on the plug connector. A little wire brushing and it has worked fine for 4 years. Might want to check if there is a connector somewhere in line that needs cleaning.

    You have to love the water....

    Len & Robyn   342 FV  Freebird

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  • TikiHut2TikiHut2 Sarasota, FlPosts: 1,392Member ✭✭✭✭
    edited November 2013
    BD. I recall that the blowers tie into the extinguisher wiring as a shunt when its deployed to prevent feeding a fire fresh oxy and to prevent venting fire retardant so youre probably right. Mike.
    Post edited by TikiHut2 on
    2004 FV270, 300hp 5.7 350mag MPI Merc 305hrs, 2:20 Bravo3 OD w.22p props, 12v Lenco tabs, Kohler 5kw genset, A/C, etc.etc...
    Regular weekender, Trailer stored indoors, M/V TikiHut, Sarasota, Fl
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  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
    Tiki, it makes sense, I should have the ext back in a week or two sure would elimnate a pita to rewire. All the connectors looked good.

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • frodo13056frodo13056 Posts: 97Member ✭✭✭
    BD, a quick check would be to put a jumper in the connection for the extinguisher circuit. If there is an interlock between the extinguisher circuit and the blower circuit, that would be good info for future use!
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  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
    I thought about that too. I'll have to wait until next weekend though, no sunday hours :(. I'll post back on it.

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • Banned2Banned2 Posts: 2,567Member ✭✭✭✭
    BD, I looked at the schematic Randy Rinker sent me and I didn't see the Extinguisher pressure switch in the blower circuit. I don't know if that's an after thought or what but the pressure switch probably just makes the power to the dash monitor active.
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  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
    edited November 2013
    Double entry. See below.
    Post edited by Black_Diamond on

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
    Thanks RY. If it's not the fire ext circuit, I'm at a loss. I wonder being diesel if yours is wired different?

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • AlswaggAlswagg Posts: 378Member ✭✭✭
    First of all, did you check the breakers?  I am sure you did.  Do you have power at the switch?  If so, how about after the switch?  Past the first multi pin connector? Do you have power in the motor compartment?  How about grounds?  Many many places for a break in the power or the ground.  Just start checking with a test light or multi meter.    I have the same issue with a Formula's motor hatch.  Al
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  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭

    Al - thanks for the comments.  Both blower switches light up when turned 'on'.  Both breakers good (not tripped and tested with a multimeter).  No power at the pin connector at the blowers themselves.  There is power at the swtich (helm).  I'm jump the connectors to see if it works then, but not sure wich to jump, I think there are 6 wires at the connector at the switch.

     

    Very odd as they both worked fine ~3 weeks ago.  The only thing I have done with wires or even in the bilge was remove the engine room fire ext. to get it recertified.  Would the fire ext switch be wired to cut the blowers off?  There are 3 wires going to the fire ext, 2 black that are connected and the other wire (don't remeber the color off hand.  Wierd they would BOTH go out at the same time.

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • Banned2Banned2 Posts: 2,567Member ✭✭✭✭
    Thats possible as I dont have any blower motors at all BD. I do have a switch though. 
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  • AlswaggAlswagg Posts: 378Member ✭✭✭
    Blower B+ should be yellow wire, 
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  • TikiHut2TikiHut2 Sarasota, FlPosts: 1,392Member ✭✭✭✭


    Here's a thought that I think you were onto.......  :-?

    (LINK TO ANOTHER BLOWER DISCUSSION)

    Just sayin' ....
    2004 FV270, 300hp 5.7 350mag MPI Merc 305hrs, 2:20 Bravo3 OD w.22p props, 12v Lenco tabs, Kohler 5kw genset, A/C, etc.etc...
    Regular weekender, Trailer stored indoors, M/V TikiHut, Sarasota, Fl
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  • Banned2Banned2 Posts: 2,567Member ✭✭✭✭
    Sounds good Tiki
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  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
    Thanks for the link Tiki.

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • TikiHut2TikiHut2 Sarasota, FlPosts: 1,392Member ✭✭✭✭
    edited November 2013

    Here's hoping that you'll plug that wiring for your recertified fire extinguisher back in and it'll all be good. It's the kind of system I wanted last year but just didn't get to. Heat sensitive release and/or manual release with a blower tie-in to shut down the blower that'd feed a fire new oxygen and to keep the fire suppressant from being exhausted......but I may be wrong. That happened once :D

    (FIREBOY SUPPRESSION LINK)

    Or SEAFIRE with FM200
    image
    Post edited by TikiHut2 on
    2004 FV270, 300hp 5.7 350mag MPI Merc 305hrs, 2:20 Bravo3 OD w.22p props, 12v Lenco tabs, Kohler 5kw genset, A/C, etc.etc...
    Regular weekender, Trailer stored indoors, M/V TikiHut, Sarasota, Fl
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  • Banned2Banned2 Posts: 2,567Member ✭✭✭✭
    BD, I just found out that I have blowers even though I don't need them and the surveyor didn't even see them!!! Anyway, guess what? They don't work either. No power to the plugs and my extinguisher is on. Let me know what you find. I am going to work on it next Sunday. 

    RY
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  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
    I'm at least a week off from working on it again. Chillin in Orlando for work :) Big PowerGen show.

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • Banned2Banned2 Posts: 2,567Member ✭✭✭✭
    Well get back to work!!!!!!!!!!!!!!!!!!!!!!! Its easy to check the ground if you put your meter on the hot wire at the plug and your ground to the battery. 
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  • Banned2Banned2 Posts: 2,567Member ✭✭✭✭
    B_D, I have 12 volts from the yellow wire at the blower plug and the neg of my meter to the battery neg. That means I have lost the ground some where. 
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  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
    I snagged my fire ext back from waiting to be re-certified today and plugged it in and hit the blower switch: presto working, so the sensor on the fire ext does indeed cut the power to the blowers...at least on mine.

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • Banned2Banned2 Posts: 2,567Member ✭✭✭✭
    Maybe the switch breaks the ground circuit?
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  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
    Either the ground or the hot, not sure but at least it works!

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • TikiHut2TikiHut2 Sarasota, FlPosts: 1,392Member ✭✭✭✭
    Rest assured that no marine electrcian who'd be astute enough to properly wire a blower shunt switch on your fire suppression would ever put a switch on a ground wire.
    2004 FV270, 300hp 5.7 350mag MPI Merc 305hrs, 2:20 Bravo3 OD w.22p props, 12v Lenco tabs, Kohler 5kw genset, A/C, etc.etc...
    Regular weekender, Trailer stored indoors, M/V TikiHut, Sarasota, Fl
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  • Black_DiamondBlack_Diamond Holland, MichiganPosts: 2,312Member ✭✭✭✭✭
    Cutting the 'hot' makes more sense for sure from a proper electrical standpoint.  I did not bother to check any further once they worked with the fire ext plugged back in.  The Fireboy-Xintex site for the fire ext 'alarm' says nothing about wiring the blowers in, in fact the instructions if the fire ext goes off are to shut off the blowers and engines.  Makes sense the blowers are wired in.  I know on some of the Xintex options you can have it cut the engines too.

    2003 342FV "Black Diamond", PC BYC, Holland, MI
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  • TikiHut2TikiHut2 Sarasota, FlPosts: 1,392Member ✭✭✭✭
    edited December 2013
    Sounds like it was one of those confounding but easy fixes.

    An engine cutoff when fire suppression is tripped is an opt on a gasser but mandatory on a diesel from what I've read.
    Post edited by TikiHut2 on
    2004 FV270, 300hp 5.7 350mag MPI Merc 305hrs, 2:20 Bravo3 OD w.22p props, 12v Lenco tabs, Kohler 5kw genset, A/C, etc.etc...
    Regular weekender, Trailer stored indoors, M/V TikiHut, Sarasota, Fl
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  • Banned2Banned2 Posts: 2,567Member ✭✭✭✭
    Well I have lost the ground to my blowers even though they are not needed in a diesel. I would still like to use them. I measured 12V at the blower motor plug yellow wire to the battery negative with switch on. No volts with switch on and measuring across the plug which is yellow and black. So I must have lost the ground somewhere. An easy fix would be to cut the ground and go right to the battery negative. 
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  • Banned2Banned2 Posts: 2,567Member ✭✭✭✭
    Ok, I decided to pull out my fire extingusher and it was flat. Thats why my blowers did not work. I jumped across the 2 connectors and the blower came on. The gauge faced downwards so you could not see the charge. 
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  • Michael TMichael T Posts: 1,851Member ✭✭✭✭
    Nice thinking Steve. I would want to use my blowers anyway as they tend to draw fresh and cooler air into the engine compartmment which is good for the engines and might also expell any CO that might be present. A win-win IMO. MT
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