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Instruction manual GWV 77
Code + description Cause Measures to take Comment
S11 (blocking error)
Short-circuit for
temperature sensor T
1
,
inlet to heat exchanger
Short circuit in sensor
circuit
Replace sensor T
1
To replace the necessary parts, you must contact your installation
engineer
S12 (blocking error)
Circuit for sensor 1 of
temperature sensor T
2
is shorted.
Short circuit in sensor
circuit
Replace sensor T
2
(1)
To replace the necessary parts, you must contact your installation
engineer
S13 (blocking error)
Short-circuit for sensor
2 of temperature
sensor T
2
, outlet of
heat exchanger
Short circuit in sensor
circuit
Replace sensor T
2
(1)
To replace the necessary parts, you must contact your installation
engineer
S14 (blocking error)
Short circuit from
dummy 1
Short circuit in sensor
circuit
Replace the dummy sensor
(2)
To replace the necessary parts, you must contact your installation
engineer
S15 (blocking error)
Short circuit from
dummy 2
Short circuit in sensor
circuit
Replace the dummy sensor
(2)
To replace the necessary parts, you must contact your installation
engineer
S16 (blocking error)
Circuit for temperature
sensor T
3
at the bottom
of the storage tank is
shorted
Short circuit in sensor
circuit
Replace sensor T
3
To replace the necessary parts, you must contact your installation
engineer