Operating Instructions
1. Plug into source power.
2. The digital display will read 888 for two seconds then begin scrolling the voltage, amps, line
frequency, and error code. In addition the time delay light will flash (dot in the bottom right
corner). If the dot does not flash a line fault condition is present check error code (see below
or your supplied code card).
3. You may notice when first plugging in that the display may read E-9, don’t worry about this, it
only means that the display has not gotten data from the computer yet. By the next cycle
through it should read E-0 if the source power is normal.
4. The meter will read L-1, and then give you a three digit number that is your line one voltage.
Then 0A, that is line one amps (current). After that L-2, a three digit number, that is line two
voltage. Next 0A, which is line two amps. Amps will read zero until the time delay is
complete. Afterward you will notice a current (amps) reading between 0 and 35. That
number indicates how many amps the RV is drawing on each line. Following, you will notice
a number 60H, which is your line frequency. That number should remain fairly consistent,
however it may read +/- one or two. Last, you will notice the E code, E0 is normal, only if E0
is present will the time delay light flash and the EMS bring power to the RV.
5. Verify that error code E0 is displayed and set up is complete.
Note:
If the wiring reads anything different than correct the EMS will not turn on and we
recommend moving to a different source or use generator power. Also if power is below 104
volts or above 132 volts the EMS will not turn on. We recommend using generator power.
Important:
The display reads voltages between 78 and 260 volts. Below will read LLL, above
will read HHH.
Accidental 220 Volt Protection:
Should this condition occur the display will read HHH instead
of the voltage and the error code will read E-4. Power will shut down instantly.
DO NOT
under any circumstances bypass the EMS, otherwise severe damage to the RV will
occur.
Error Code Chart
E-0 -- Normal condition
E-1 -- Reverse polarity condition (hot and neutral wires reversed)
E-2 -- Open Ground (no ground wire connection)
E-3 -- Line 1 Voltage High (line 1 voltage above 132)
E-4 -- Line 1 Voltage Low (line 1 voltage below 104)
E-5 -- Line 2 Voltage High (line 2 voltage above 132)
E-6 -- Line 2 Voltage Low (line 2 voltage below 104)
E-7 -- Line Frequency High (line frequency above 69 cycles per second)
E-8 -- Line Frequency Low (line frequency below 51 cycles per second)
E-9 -- Data Link Down (remote display not getting information)
E-10 Replace the surge protector module
IMPORTANT NOTE:
An open neutral will cause there to be
no
reading on the display
Note: If the EMS cuts the power to the RV it will show a PE (previous error) code following the E
code. This denotes the previous error or why the EMS shut down power. Example: The EMS
cut power for low voltage on line 1 then power comes back up and is restored. The error code
reads E0 (good electricity now) but the PE code reads PE4, that tells the user low voltage line 1
was the reason the EMS previously cut power.
When power is first applied to the RV you may notice a large current draw on the amp meter even
though little or nothing in the RV is turned on. This is caused by the battery charger built into the
RV. Less current will be drawn as the batteries become charged. However this may take some
time depending on how low the battery voltage was.
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