Page
15
of
35
Procedure 3
3. CHECK AND CHANGE OF UPPER TANK TEMPERATURE SENSOR
– T3
NTC thermosensor code:
G0030153;
NTC thermosensor model:
5K/L1200T
Tools:
Screw driver PH2; Pliers
Risk of electric shock!
Disconnect the HPWH from the main electric supply!!!
1) Switch off the HPWH
2) Open the PCB box as per procedure 1.
3) Tear up the cable bundle containing the cable of T3
4) On terminal CN3 (
Fig: pr.3.1)
, disconnect the cable of upper tank
temperature sensor T3,
designated by Number “3” on a yellow ring
5) Pull the cable out
6) Replace with a new one on reverse order.
7) When pushing a new sensor into the thermo-pocket tube (see
Fig:
pr.2.1.),
assure that the sensor is dived to the end. Be sure that the position is
the right one as per picture
Fig: pr.2.1.
8)
Assemble everything at the reverse order, do not forget to tighten again the
cables into the bundle. Assure that no cables are in contact with moving parts
or sharp edges.
Fig: pr.3.1:
Procedure 4
4. CHECK AND CHANGE OF EVAPORATOR COIL TEMPERATURE SENSOR
NTC thermosensor code:
G0030153;
NTC thermosensor model:
5K/L1200T
Tools:
Screw driver PH2; Pliers
Risk of electric shock!
Disconnect the HPWH from the main electric supply
1) Switch off the HPWH
2) Open the PCB box as per procedure 1.
3) Tear up the cable bundle containing the cable of T4
4) On terminal CN3 (
Fig: pr.4.2)
, disconnect the cable of coil tank
temperature sensor T4,
designated by Number “4” on a yellow ring
5) Pull the cable out
6) Replace with a new one on reverse order.
7) When mounting a new sensor into the holder (see
Fig: pr.4.1.),
assure
that the sensor is well fixed by the spring clamp. Be sure that the position is the
right one as per picture
Fig: pr.4.1.
8)
Assemble everything at the reverse order, do not forget to tighten again the
cables into the bundle. Assure that no cables are in contact with moving parts
or sharp edges.
Fig: pr.4.1
Fig: pr.4.2
Upper T3 &
Ground
Coil (Evaporator) T4 &
Ground
Spring clamp
Sensor holder
