95
UNITY MOTORHOME ELECTRICAL SYSTEM OPERATION
TROUBLESHOOTING GUIDE
In order to help troubleshoot the problem(s) you are
experiencing and render the best possible solution,
it is necessary you be at your motorhome when you
place your call�
1� If the display is illuminated and scrolling
information, note the Error Code. If there is an
Error code of 1-9, the device will interrupt the
power. See Error Chart for denition of AC power
problem. The device being off when an Error
Code is present indicates the product is working
properly and protecting your motorhome�
2� If the display is illuminated and reading Error
code E 0, and yet no power is present in the
coach, please contact Technical Support. You
must wait for the time delay light to stop ashing.
3� If the display is not illuminated and power is in
the coach there is a connection issue between
the display and the main control box� Contact a
qualied service center.
Refer to the surge protector manual in the Motorhome
Information Kit for further details�
SOLAR POWER UNIT
Your motorhome may be equipped with a solar power
kit. The solar power unit continuously charges the
coach batteries to maintain the optimal charge. The
solar controller
1
is located in the cabinet above
the passenger seat� Refer to the solar controller
manual in the Motorhome Information Kit for detailed
operating instructions�
1
NOTE: If the EMS cuts the power to the RV it will
show a PE code following the E code. This denotes
the previous error or why the EMS shut down.
Example: The EMS cuts power for low voltage on
Line 1, and then the power is restored. The Error
Code reads E 0, but the PE code reads PE 4 which
tells the user low voltage was the reason for the EMS
previously cutting power. This PE error code will be
deleted when power is disconnected from the EMS.
NOTE: There will be a 15 second delay after
plugging the motorhome into shore power while the
surge protector veries the incoming voltage.
ACCIDENTAL 240 VOLT PROTECTION
Should this condition occur, the display will read 240
volts instead of displaying the voltage and the error
code message will read E3. AC power will shut down
instantly�
Do not under any circumstances bypass the
EMS. Any bypass will result in severe damage
to the motorhome.
WARNING
Error Code Chart
EO Normal Operating Condition.
E1 Reverse Polarity (hot and neutral wires reversed).
E2 Open Ground (no ground wire connection).
E3 Line 1 High Voltage (line voltage above 132V).
E4 Line 1 Low Voltage (line voltage below 104V).
E5* Line 2 Voltage High (Line voltage above 132).
E6* Line 2 Voltage Low (Line voltage below 104 volts).
E7 Line Frequency High (line frequency above 69 cycles per second).
E8 Line Frequency Low (line frequency below 51 cycles per second).
E9 Data Link Down (call technical support)
E10 Replace Surge protector Module (call technical support).
*Codes only apply to EMS-LCHW50 models.