Forum Discussion

goducks10's avatar
goducks10
Explorer
Jun 04, 2018

Noisy WFCO fan.

When plugged into shore power and turning on a bank of 3 LED lights or 2+ in another area the fan on the WFCO converter really revs up.
FYI I have 4-6V Costco batteries that are in great shape. Digital volt readout shows 13.5-6 when charging and 12.5-7 when shore is disconnected.
Is it normal for the fan to rev up a lot. It seems like it's gotten a little noisier over the past year. Not noisy like a bearing going out. Noisy like revving up faster than in the past.
I guess my question is why does it need to rev up like it does?
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    Jun 04, 2018
    2013 RV ----SO 5 years is a pretty good run for a WFCO

    What is the AC Voltage?
    IIRC the Fan is a 120V AC fan not DC
    AC Voltage fluctuations would change fan speed

    Or could be issue with the thermal sensor/t-stat that turns fan on/off
  • goducks10's avatar
    goducks10
    Explorer
    Jun 04, 2018
    Old-Biscuit wrote:
    2013 RV ----SO 5 years is a pretty good run for a WFCO

    What is the AC Voltage?
    IIRC the Fan is a 120V AC fan not DC
    AC Voltage fluctuations would change fan speed

    Or could be issue with the thermal sensor/t-stat that turns fan on/off


    It's left plugged in 24/7 when not dry camping. I guess it's still working even in trickle mode.
    Not sure on the AC volts.
    The fan only comes on when there's a draw on the converter.
    I was just thinking that it shouldn't run maxed out when only 3 LED lights are on. I didn't think LED's drew enough amperage to make the fan need to kick on.
  • Lynnmor's avatar
    Lynnmor
    Explorer
    Jun 04, 2018
    goducks10 wrote:
    Old-Biscuit wrote:
    2013 RV ----SO 5 years is a pretty good run for a WFCO

    What is the AC Voltage?
    IIRC the Fan is a 120V AC fan not DC
    AC Voltage fluctuations would change fan speed

    Or could be issue with the thermal sensor/t-stat that turns fan on/off


    It's left plugged in 24/7 when not dry camping. I guess it's still working even in trickle mode.
    Not sure on the AC volts.
    The fan only comes on when there's a draw on the converter.
    I was just thinking that it shouldn't run maxed out when only 3 LED lights are on. I didn't think LED's drew enough amperage to make the fan need to kick on.


    Try some different light loads to see if those LEDs are causing a problem.

    I replaced the cheap fan in my WFCO with a ball bearing fan the first year. I guess they saved just a few pennies.
  • SidecarFlip's avatar
    SidecarFlip
    Explorer III
    Jun 04, 2018
    WFCO fans are the cheapest sleeve bearing fans available. Nothing new there. I too am amazed the WFCO has lasted as long as it has. Think I'd be saving up for a real converter like a PD unit.
  • goducks10's avatar
    goducks10
    Explorer
    Jun 04, 2018
    SidecarFlip wrote:
    WFCO fans are the cheapest sleeve bearing fans available. Nothing new there. I too am amazed the WFCO has lasted as long as it has. Think I'd be saving up for a real converter like a PD unit.


    Already been thinking thats my next step.

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