8
Operating Instructions
1. Plug into A/C power.
2. Digital display will read 888 for one second and then begin
scrolling the voltage, amps, line frequency and error code, if any.
In addition, the time delay light will flash while the EMS is going
through its countdown and will stop when the unit engages
(bottom right hand corner.) If delay light does not flash, a fault
condition is present. Refer to the Error Code Chart (page 9) to
determine the problem with the AC power.
3. You may notice when first plugging in, the display may read
E 9. This indicates the display has not received the data from the
computer yet. Do not be alarmed, this is normal. By the next
scroll through, it should read E 0 if the AC power is normal.
4. The digital display will give you a three digit number indicating
your line voltage. Next, it will give you an “0A” reading
indicating the current (amps). The current (amps) will read zero
until the time delay is complete (136 seconds or 16 seconds,
depending on your settings). Next the unit will indicate a number
between 0 and 50 which indicates how many amps the RV is
drawing. The next number indicates your line frequency . This
number should be “60H” and should remain fairly consistent;
however, it may read plus/minus one or two. Lastly, note the E
code. E 0 is normal and only when E 0 or E10 is present will the
delay light flash and allow power to the RV. Refer to the Error
Code Chart card that was provided with your unit or see the Error
Code Chart (page 9) for additional information.
5. Set up will be complete when the Error Code E 0 is displayed.
IMPORTANT: The display will only read voltages between
approximately 78 volts and 255 volts.
NOTE: If the wiring reads anything different than correct, the EMS
will not turn on and we recommend you move to a different source
of AC power or use your generator power. Also, if power is below
104 volts or above 132 volts, the EMS will not turn on, and we
recommend using your generator power.
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