Blocking - DeDietrich EVODENS PRO Amc 45 Service Manual

9 Troubleshooting
Tab.29 Blocking codes
Code Display text
H00.69 TbufferTankOpen
H00.70 TbufferTankClosed
H00.71 TbufferTankTopOpen
H00.72 TbufferTankTopClosed
H00.74 TBufferTankMissing
H00.75 TBufferTankTop Miss
H00.76 TcascadeFlow Open
H00.77 TcascadeFlow Closed
48 AMC Pro
9.1.2

Blocking

Description
Buffer Tank temperature sensor is
either removed or measures a
temperature below range
Buffer Tank temperature sensor is
either shorted or measures a
temperature above range
Buffer Tank top temperature sensor
is either removed or measures a
temperature below range
Buffer Tank top temperature sensor
is either shorted or measures a
temperature above range
Buffer Tank temperature sensor was
expected but not detected
Buffer Tank Top temperature sensor
was expected but not detected
Cascade Flow temperature sensor is
either removed or measures a
temperature below range
Cascade Flow temperature sensor is
either shorted or measures a
temperature above range
Solution
Buffer tank temperature sensor open:
Bad connection: check the wiring and connec­
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Sensor is not present.
Faulty sensor: replace the sensor
Buffer tank temperature sensor short-circuited:
Bad connection: check the wiring and connec­
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Faulty sensor: replace the sensor
Buffer tank top temperature sensor open:
Bad connection: check the wiring and connec­
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Sensor is not present.
Faulty sensor: replace the sensor
Buffer tank top temperature sensor short-circuit­
ed:
Bad connection: check the wiring and connec­
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Faulty sensor: replace the sensor
Buffer tank temperature sensor not detected:
Buffer tank temperature sensor is not connec­
ted: Connect the sensor
Buffer tank temperature sensor is not connec­
ted correctly: Connect the sensor correctly
Faulty sensor: replace the sensor
Buffer tank top temperature sensor not detected:
Buffer tank top temperature sensor is not con­
nected: Connect the sensor
Buffer tank top temperature sensor is not con­
nected correctly: Connect the sensor correctly
Cascade flow temperature sensor open:
Bad connection: check the wiring and connec­
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Sensor is not present.
Faulty sensor: replace the sensor
Cascade flow temperature sensor short-circuited:
Bad connection: check the wiring and connec­
tors
Incorrectly fitted sensor: check that the sensor
has been correctly fitted
Faulty sensor: replace the sensor
7725106 - v.01 - 05062019