Instructions / Assembly

17
Section 2... the “THERMOSTAT” LED
“System Sentinel” Troubleshooting Guide
Is Thermostat set at a tempera-
ture higher than the water tem-
perature in tank?
Th e r m os t a t i s
defective or out of calibration
and must be replaced.
Adjust Thermostat to a higher
setting. Is Thermostat LED now
illuminated?
Thermostat is calling for heat, and
24 VAC power is being supplied to
the Damper Assembly.
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
Is the “THERMOSTAT” LED Illuminated?
CAUTION
!
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. VERIFY PROP-
ER OPERATION AFTER SERVICING!
Ensure that power is being supplied
to the water heater. Refer to “Section 1...
the POWER LED” in this Troubleshoot-
ing Guide, and correct if necessary. Is the
“THERMOSTAT LED” now illuminated.
Ensure that power is being supplied to
the water heater. Refer to “Section 1...
the POWER LED” in this Troubleshoot-
ing Guide, and correct if necessary. Is the
“THERMOSTAT LED” now illuminated.
Is 24 VAC
power present at Yellow Wire
Terminal inside Thermostat?
Is 24 VAC power present at
Blue Wire Terminal inside Ther-
mostat?