Watts AERCO SmartPlate SP23 User Manual

SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 7 – TROUBLESHOOTING
OMM-0069_0H • SP-100 • 1/30/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 50 of 134
TABLE 7-1. Troubleshooting – Control Valve MXG-461 and Piping Assembly
No.
Fault Indication
Probable Cause
Corrective Action
T5
Rapid fluctuations in
heater outlet temperature
which do not follow load
changes
1. Temp. Controller is not
functioning properly.
1. Refer to Table 7-2 and troubleshoot the
Temp. Controller.
TABLE 7-1A. 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

Watts AERCO SmartPlate SP23 Specifications

General

Brand	Watts
Model	AERCO SmartPlate SP23
Category	Water Heater
Language	English