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Procedure 5
5. CHECK AND CHANGE OF RETURN GAS 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 T5
4) On terminal CN3 (
Fig: pr.5.2)
, disconnect the cable of return gas
temperature sensor T5,
designated by Number “5” 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.5.1.),
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.5.1.
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.5.1:
Fig: pr.5.2:
Return gas T5 &
Ground
Spring clamp
Sensor holder
