AERCO SmartPlate - Manual (Page 47)

SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 7 – TROUBLESHOOTING
OMM-0069_0E AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 Page 47 of 138
SP-100 Phone: 800-526-0288 PRI: 11/26/2013
CHAPTER 7. TROUBLESHOOTING
7.1 INTRODUCTION
The troubleshooting procedures provided in this Chapter are intended to aid service and
maintenance personnel in isolating the most probable cause of a fault in a packaged SmartPlate
Water Heater. Prior to performing the troubleshooting steps and procedures in this Chapter,
perform the following preliminary checks:
1. Ensure that external AC power at 120 VAC or 220 VAC is being supplied to the
SmartPlate ECS/SP Control Box.
2. Check to ensure that all Electronic Control System (ECS/SP) electrical cable connections
are secure.
3. Ensure that the Electronic Control Valve (MXG-461) is securely connected to the cable
plug from the ECS/SP Control Box.
4. Check the fuse in the ECS/SP Control Box that supplies power the Recirculation Pump an
Electronic Control Valve.
5. Ensure that both the upstream and downstream shut-off valves are fully open.
6. Check the circuit breaker on the 24 VAC Transformer inside the ECS/SP Control Box.
NOTE
In addition to the procedures contained in this Chapter, also check
the troubleshooting sections of the Boiler Operation and
Maintenance Manual being used with the SmartPlate and any
other ancillary equipment manuals associated with the installation.
7.2 TROUBLESHOOTING PROCEDURES
The troubleshooting procedures for the SmartPlate Water Heater are provided in Tables 7-1, 7-
2 and 7-3. Table 7-1 provides troubleshooting procedures for the MXG-461 Control Valve and
Piping Assembly components. Table 7-2 provides troubleshooting procedures for the ECS/SP
Electronic Control System. Table 7-3 provides a troubleshooting guide to aid in resolving
temperature control issues which may be encountered during SmartPlate operation. Also, when
troubleshooting ECS/SP faults related to the Temperature Controller (Eurotherm, Model 2408),
refer to Appendix A for additional information concerning process fault and diagnostic alarms.
When a fault occurs in the SmartPlate Water Heater, proceed as follows to isolate and correct
the fault:
1. Refer to the FAULT INDICATION column in the following tables and locate the fault that
best describes the existing conditions.
2. Proceed to the PROBABLE CAUSE column and, if more than one item is listed, start with
the first item shown for the fault condition.
3. Perform the corresponding checks and procedures listed in the CORRECTIVE ACTION
column for the first PROBABLE CAUSE.
4. Continue checking each additional PROBABLE CAUSE for the existing fault until the fault
has been corrected.