Mitsubishi Heavy Industries FDCW100VNX-A, Technical Manual

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Service
'19 • HM-T-340
Unit of HSB series
1 . Install the new sensor (BT12 or BT3)
on the external water pipes from the unit.
Make sure that there is contact between the
sensor and the pipe and that the sensor is
insulated along the pipe.
Component replacement
On HSB60-W component position might be different but method is the same
#
3 . Remove cabling from the damaged
BT12 BT3
Cable glands
BT12/BT3 connector
Replace temperature sensor BT12 and BT3
As temperature sensors BT12 (heating
medium flow) and BT3 (heating medium
return) are installed on the water pipes
(back of the unit) and covered with
insulation there is limitation to access,
so it is not possible to remove damaged
sensors. Solution is leave the sensors on the
unit and install the new ones in a different
position.
2 . Guide the new sensor cable to AA23
communication board using one of the
available cable glands
temperature sensor and connect the
new one.