is
Instruction manual GWV
76
13.3 Troubleshooting table for displayed errors
Displayed errors
Code + description
Cause
Measures to take
Comment
S01 (blocking error)
Open circuit for
temperature sensor T
1
,
inlet to heat exchanger
Sensor is not (correctly)
connected
Connect the sensor lead to JP3
See the GWV electrical diagram
(17 "Appendices")
Damaged cable or
defective sensor
Replace sensor T
1
To replace the necessary parts, you must contact your installation
engineer
S02 (blocking error)
Open circuit for sensor
1 of temperature
sensor T
2
, outlet of
heat exchanger
Sensor is not (correctly)
connected
Connect the sensor lead to JP5
See the GWV electrical diagram
(17 "Appendices")
Damaged cable or
defective sensor
Replace sensor T2
(1)
To replace the necessary parts, you must contact your installation
engineer
S03 (blocking error)
Open circuit for sensor
2 of temperature
sensor T
2
, outlet of
heat exchanger
Sensor is not (correctly)
connected
Connect the sensor lead to JP5
See the GWV electrical diagram
(17 "Appendices")
Damaged cable or
defective sensor
Replace sensor T2
(1)
To replace the necessary parts, you must contact your installation
engineer
S04 (blocking error)
Open circuit in
dummy 1
Dummy is not
(correctly) connected
Connect the dummy sensor (dummy sensor 1 and 2) leads to JP4. See the GWV electrical diagram
(17 "Appendices")
Defective dummy
Replace the dummy sensor
(1)
To replace the necessary parts, you must contact your installation
engineer
S05 (blocking error)
Open circuit in
dummy 2
Dummy is not
(correctly) connected
Connect the dummy sensor (dummy sensor 1 and 2) leads to JP4. See the GWV electrical diagram
(17 "Appendices")
Defective dummy
Replace the dummy sensor 2
(1)
To replace the necessary parts, you must contact your installation
engineer
S06 (blocking error)
Open circuit for
temperature sensor T
3
at the bottom of the
storage tank.
Sensor is not (correctly)
connected.
Connect the sensor lead to JP5
See the GWV electrical diagram
(17 "Appendices")
Damaged cable or
defective sensor
Replace the sensor
To replace the necessary parts, you must contact your installation
engineer
Summary of Contents for GWV - 120
Page 2: ...www aosmithinternational com your installer ...
Page 4: ...4 Instruction manual GWV gis ...
Page 8: ...Table of contents 8 Instruction manual GWV ...
Page 12: ...Introduction 12 Instruction manual GWV 1 gis ...
Page 40: ...Installation 40 Instruction manual GWV 3 is ...
Page 42: ...Conversion to a different gas category 42 Instruction manual GWV 4 is ...
Page 46: ...Filling 46 Instruction manual GWV 5 gis ...
Page 58: ...Starting and running 58 Instruction manual GWV 9 gis ...
Page 60: ...Shutting down 60 Instruction manual GWV 10 gis ...
Page 72: ...Service program 72 Instruction manual GWV 12 is ...
Page 86: ...Troubleshooting 86 Instruction manual GWV 13 gis ...
Page 88: ...Maintenance frequency 88 Instruction manual GWV 14 is ...
Page 98: ...Appendices 98 Instruction manual GWV 17 is ...
Page 100: ...Instruction manual GWV 100 ...
Page 102: ...0307 971 4 0 UK Index Instruction manual GWV ...