AERCO SmartPlate User Manual
Page 53
SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 7 – TROUBLESHOOTING
OMM-0069_0E
AERCO International, Inc.
100 Oritani Dr. Blauvelt, NY 10913
Page 53 of 138
SP-100
Phone: 800-526-0288
PRI: 11/26/2013
Table 7-2. Troubleshooting – Electronic Control System (ECS/SP) – Cont.
No.
Fault Indication
Probable Cause
Corrective Action
T9
T1
0
Temperature control
not within
specifications.
Items T1 – T8 check
out OK.
Wide fluctuations in
outlet water
temperature under low
flow conditions.
1.
Unexpected
system dynamics.
2.
Outlet Temp
Sensor connected
to Temp Controller
gives inconsistent
or inter-mittent
readings.
3.
Mixed Water Temp
Sensor is open,
shorted or gives
inconsistent
readings.
4.
Recirculation Pump
failure.
1.
See Table 7-3 for Temperature
Control Troubleshooting.
2.
Replace Outlet Temp Dual Sensor
at Heater outlet port.
3.
Replace Mixed Water Temp
Sensor.
4.
Replace Recirculation Pump
T1
0
Wide fluctuations in
outlet water
temperature under low
flow conditions.
1.
Outlet Temp
Sensor connected
to Temp Controller
gives inconsistent
or inter-mittent
readings.
2.
Mixed Water Temp
Sensor is open,
shorted or gives
inconsistent
readings.
3.
Recirculation Pump
failure.
1.
Replace Outlet Temp Dual Sensor
at Heater outlet port.
2.
Replace Mixed Water Temp
Sensor.
3.
Replace Recirculation Pump
NOTE
Refer to the Dynamic Temperature Control Settings specified in
Table 7-3A when performing the Corrective Actions listed in Table
7-3 which follows. Adjustment of Pb, Pb2 and FFPb can be
accomplished from the first menu level on the Eurotherm 2408
Controller. Refer to Chapter 4, paragraph 4.3 for procedure.