A.O. Smith ADMR - 40, Installation, User And Service Manual

Page: 69 / 96

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Instruction manual ADMR 69
S04 (blocking error)
Open circuit from flue
gas sensor 1.
Flue gas sensor is not
(correctly) connected.
Connect the flue gas sensor lead
(2)
to JP4. See the ADMR electrical diagram (17 "Appendices")
Defective flue gas
sensor
Replace the flue gas sensor T
1
To replace the necessary parts, you must contact your installation
engineer
Damaged wiring 1. Measure the wire resistance of the sensor lead. This must be
± 0 Ohm.
2. Replace any damaged leads
To replace the necessary parts, you must contact your installation
engineer
S05 (blocking error)
Open circuit from flue
gas sensor 2.
Flue gas sensor is not
(correctly) connected.
Connect the flue gas sensor lead
(2)
to JP4. See the ADMR electrical diagram (17 "Appendices")
Defective flue gas
sensor
Replace the flue gas sensor T
2
To replace the necessary parts, you must contact your installation
engineer
Damaged wiring 1. Measure the wire resistance of the sensor lead. This must be
± 0 Ohm.
2. Replace any damaged leads
To replace the necessary parts, you must contact your installation
engineer
S11 (blocking error)
Short circuit in the
temp. sensor T2 at the
bottom of the tank
Short circuit in sensor
circuit
Replace sensor T
2
and lead To replace the necessary parts, you must contact your installation
engineer
S12 (blocking error)
Short circuit in sensor 1
of temperature sensor
T
1
at the top of the
tank
(1)
Short circuit in sensor
circuit
Replace sensor T
1
and lead To replace the necessary parts, you must contact your installation
engineer
S13 (blocking error)
Short circuit in sensor 2
of temperature sensor
T1 at the top of the
tank
(1)
Short circuit in sensor
circuit
Replace sensor T
1
and lead To replace the necessary parts, you must contact your installation
engineer
Symptom Cause Solution Remark