SmartPlate EV Installation, Operation and Maintenance Manual
APPENDIX A
– MODBUS CONTROL AND COMMUNICATION
OMM-0147_C
• SP-102 • 3/2/2021 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
62
of
72
DIAGNOSTIC ALARMS
DISPLAY
MEANING
WHAT TO DO`
O P E n
Secondary Input Missing or
Disconnected
This error may result from no power to the Flow
Meter (check for green power light on rear of meter
or 0-5V Flow Meter signal connections), or a
disconnection of the Molex connector between Flow
Meter and the Temperature Controller.
A4.1. Clearing Hardware Error (Hw.Er) Display
To clear a Hardware Error and reset the Temperature Controller, proceed as follows:
CLEARING HARDWARE ERROR DISPLAY Instructions
1. The display flashes
Hw.Er
after adding or removing comm. bd.
2. Simultaneously press the
Page
(
) and
Scroll
(
) buttons on the Temperature
Controller.
3. Using the
Up
(▲) arrow button, change the password to “
8
”.
4. Simultaneously press the
Page
(
) and
Scroll
(
) buttons again and observe the
Temperature Controller display. The top line will display “
8
” and the bottom line will display
“NO”.
5. Press the Up
(▲) arrow button to toggle the display from
NO
to
YES
.
6. Simultaneously press the
Page
(
) and
Scroll
(
) buttons to “reset” the Temperature
Controller and clear the hardware error.
