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Fault in the electrical control system<br />
DELTABOOSTER_GB01<br />
Trouble-shooting<br />
D<br />
Printed Circuit Coard<br />
Interruptions of operation where the fault cannot be assigned to the previous pages 1 to 9 may be<br />
due to faults in the electrical control system, the circuit board.<br />
The printed circuit board is protected against an overloading by means of a fuse F4, which has<br />
been placed on the P.C. board. If this fuse blows more than once, the P.C. board must be considered<br />
to be defective.<br />
For protection of the outlet X4 to motor relays, X5 for the softener pump + relief valve and X6 for<br />
the solenoid valves, hot and cold, fuse F3 has been placed on the secondary side of the transformer<br />
in the upper part of EPM. If this fuse blows too, when the plugs X4-X5-X6 are dismounted,<br />
the P.C. board must be considered to be defective. If not, check various connections.<br />
See section F page 4.<br />
9
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