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3.9A – The machine causes the automatic differential switch to
trip, in order to protect the power line it is connected to.
Possible reasons:
d) Short-circuited resistance
e) Short-circuited solenoid valve
f) Pump burned
g) Other (See final summary page on “Troubleshooting”).
Operations:
a) See paragraph 3.2, operation C.
b) See paragraph 3.4
c) Burned pump replacement (see fig. 34 - 35).
Operation C:
Replacing the faulty pump.
1 – Disconnect the Teflon pipe connecting the pump to the
boiler, and disconnect the electric wires (see fig.34-35)
fig.34 fig.35
2 – Take the screws fastening the pump and the rubber feet
out.
3 – Take the pump out.
4 – Replace the pump.
5 – Reassemble the whole unit carrying out the operations in
reverse order.
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