AERCO SmartPlate - Manual (Page 27)

SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 4 – ADJUSTMENT
OMM-0069_0E AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 Page 27 of 138
SP-100 Phone: 800-526-0288 PRI: 11/26/2013
4. Set the ECS/SP Control Box POWER switch to the ON position to apply 24 VAC power to
the Control Valve Actuator (pins 1 (G0) and 2 (G). Ensure the Valve is in the AUTO
position, the LED indicator will light green continuously indicating that Valve operation is
normal (no faults).
5. Using a pin or paper clip, depress the auto-stroke button in the opening of the terminal
housing (Figure 4-2). This will initiate calibration of the Control Valve.
6. During actuator calibration, the LED indicator (Figure 4-2) will flash green for
approximately 10 seconds. The Control Valve will be briefly closed and fully opened.
7. Upon successful completion of the Valve calibration process, the LED indicator will stop
flashing and remain ON continuously green.
8. The two-color (Red/Green) indicator is useful in determining the operating status of the
Control Valve. Refer to Table 4-1 for descriptions of the possible LED status displays
which may be encountered.
Table 4-1. Control Valve MXG-461 LED Status Indicators
LED Display Status Description
LED green On continuously Automatic Mode (normal, no faults)
Flashing - Mechanically set to MANUAL
- Mechanically set to OFF
- Currently in Auto-Calibrate Mode
LED red On continuously - General fault
- General calibration fault
- Microprocessor fault
Flashing - Faulty 24 VAC supply (Too low)
LED Off - No 24 VAC supply
- Electronics Module fault
9. Turn off power to the Control Valve by setting the ECS/SP Control Box POWER switch to
the OFF position.
10. Replace and secure the Electronics Module cover by tightening the two captive screws.
WARNING
MANUAL CONTROL OPERATION OF THE 3-WAY VALVE
DISABLES THE OVER-TEMPERATURE & POWER LOSS
SAFETY SHUTDOWN FEATURES OF THE SYSTEM. MANUAL
OPERATION IS ONLY USED FOR PROBLEM DIAGNOSIS.
MANUAL OPERATION MAY CAUSE OVER-HEATING OF
DOMESTIC WATER AND SCALDING OF WATER USERS.