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G. INTERVENTION PROCEDURE.
Procedure 1
1. CHANGING THE MAIN PCB
PSB code:
G0010018;
PSB model:
HY473024
Tools:
Screw driver PH2; Pliers
Risk of electric shock!
Disconnect the HPWH from the main electric supply!!!
1)
Switch off the HPWH
2)
Disconnect the unit from main electricity supply
3)
Unscrew four screws No: 1; 2; 3; 4
4)
Open the front cover
5)
Disconnect all cables and wirings of the PCB
6)
Gently dismantle the main PCB from plastic clips No: 5; 6; 7; 8;
7)
Replace the PCB with a new one with the same code
8)
Make an assembly in the reverse order
Fig: pr.1.1. Fig: pr.1.2.
Fig: pr.1.3. Fig: pr.1.4 Fig: pr.1.5
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1
5
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