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GrandmasHome's avatar
GrandmasHome
Explorer
Mar 06, 2014

Furnace Sub. SF-30F fan speed affected by electric service?

I'm experiencing fluctuation in current coming to RV from electric box - it affects my coffee maker (very bad - must wait too long!!!) but sometimes it's ok. I do rely on my furnace - but wonder if the current coming to that is affected as well and is it adverse to fan speed? Don't know if it's an issue, but wondered. Others in my campground said they experience electric fluctuations as well. I worry because if fan speed is too slow it could cause enclosure to become too hot . . . ? Grandmashome
  • GrandmasHome's avatar
    GrandmasHome
    Explorer
    Mar 06, 2014
    NORM WADDELL wrote:
    IF you are having current fluctuations without
    you changing the load, that is caused by VOLTAGE
    (driving force for the current) fluctuations.
    Get a small voltmeter ( a few dollars at WalMart
    or other stores, or borrow one from a neighbor
    or the management of the park)......plug it in
    and see what your voltage is......should be between
    say 110 volts and 130 volts........will decrease
    as you add load.........if it changes withOUT
    you changing load (or an automatic change such
    as an airconditioner cycle on/off), there is
    a power problem with the circuit feeding your R V.
    Have the campground get that repaired.

    And:
    Your furnace blower runs on 12vdc not ac. That may be battery/converter problem.

    I spoke to the campground management - they will come and check when it stops raining. I also have a problem with the low energy use heater I have plugged into the 110V separately not running through the RV. My RV is 30 amp.
  • Jim-Linda's avatar
    Jim-Linda
    Explorer II
    Mar 06, 2014
    Your furnace blower runs on 12vdc not ac. That may be battery/converter problem.
  • GrandmasHome's avatar
    GrandmasHome
    Explorer
    Mar 06, 2014
    Nothing is cycling on/off - will bother a neighbor with a voltmeter - thanks! GrandmasHome
  • NORM_WADDELL's avatar
    NORM_WADDELL
    Explorer
    Mar 06, 2014
    IF you are having current fluctuations without
    you changing the load, that is caused by VOLTAGE
    (driving force for the current) fluctuations.
    Get a small voltmeter ( a few dollars at WalMart
    or other stores, or borrow one from a neighbor
    or the management of the park)......plug it in
    and see what your voltage is......should be between
    say 110 volts and 130 volts........will decrease
    as you add load.........if it changes withOUT
    you changing load (or an automatic change such
    as an airconditioner cycle on/off), there is
    a power problem with the circuit feeding your R V.
    Have the campground get that repaired.

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